ARID/BRIGHT DNA binding domain of AT-rich interactive domain-containing protein 4A (ARID4A) and similar proteins; ARID4A, also called retinoblastoma-binding protein 1 (RBBP1, or RBP1), is a leukemia and tumor suppressor involved in epigenetic regulation in leukemia and Prader-Willi/Angelman syndrome. It associates with the mSIN3A histone deacetylase (HDAC) chromatin remodeling complex through the interaction with the breast cancer associated tumor suppressor ING1, the breast cancer metastasis suppressor BRMS1, and the ARID4 family homolog ARID4B (also known as RBP1L1). ARID4A specifically interacts with retinoblastoma protein (pRb) and shows both HDAC-dependent and -independent repression activities. It is also involved in the pocket domain of pRb-mediated repression of E2F-dependent transcription and cellular proliferation. Moreover, it acts as a Runx2 coactivator and is involved in the regulation of osteoblastic differentiation in Runx2-osterix transcriptional cascade. ARID4A contains a Tudor domain, a PWWP domain (also known as HATH domain or RBB1NT domain), an AT-rich DNA-interacting domain (ARID, also known as BRIGHT), a chromobarrel domain, and a C-terminal R2 domain. The ARID and R2 domains are responsible for the repression activities. The Tudor, PWWP, and chromobarrel domains are all Royal Family domains, but only chromobarrel domain of ARID4A is responsible for recognizing both dsDNA and methylated histone tails, particularly H4K20me3, in chromatin remodeling and epigenetic regulation.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 115334677  311 ERDNFLQQLYKFMEDRGTPINKPPVLGYKDLNLFKLFRLVYHQGGCDNIDSGAVWKQIYMDLGIPILNSAASYNVKTAYR 390
Cdd:cd16882     1 ERDNFLQQLYKFMEDRGTPINKPPVLGYKDLNLFKLFRLVYQQGGCDNIESGSVWKQIYMDLGIPILNSAASYNVKTAYR 80

                  ....*..
gi 115334677  391 KYLYGFE 397
Cdd:cd16882    81 KYLYGFE 87

first Tudor domain found in AT-rich interactive domain-containing protein 4A (ARID4A) and similar proteins; ARID4A, also called retinoblastoma-binding protein 1 (RBBP1 or RBP1), is a leukemia and tumor suppressor involved in epigenetic regulation in leukemia and Prader-Willi/Angelman syndromes. It associates with the mSIN3A histone deacetylase (HDAC) chromatin remodeling complex through its interaction with the breast cancer associated tumor suppressor ING1, the breast cancer metastasis suppressor BRMS1, and the ARID4 family homolog ARID4B ( also known as RBP1L1). ARID4A specifically interacts with retinoblastoma protein (pRb) and shows both HDAC -dependent and -independent repression activities. It also acts as a Runx2 coactivator and is involved in the regulation of osteoblastic differentiation in Runx2-osterix transcriptional cascade. ARID4A contains tandem Tudor domains, a PWWP domain (also known as HATH domain or RBB1NT domain), an AT-rich DNA-interacting domain (ARID, also known as BRIGHT), a chromobarrel domain, and a C-terminal R2 domain. The ARID and R2 domains are responsible for the repression activities. The Tudor, PWWP, and chromobarrel domains are all Royal Family domains, but only the chromobarrel domain of ARID4A is responsible for recognizing both dsDNA and methylated histone tails, particularly H4K20me3, in chromatin remodeling and epigenetic regulation. The model corresponds to the first Tudor domain. The Tudor domain binds to proteins with dimethylated arginine or lysine residues, and may also bind methylated histone tails to facilitate protein-protein interactions.

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 115334677    4 ADEPAYLTVGTDVSAKYRGAFCEAKIKTVKRLVKVKVLLKQDNTTQLVQDDQVKGPLR 61
Cdd:cd20459     1 ADEPAYLTVGTDVSAKYRGAFCEAKIKTVKRLVKVKVLLKGDNSTQLVQDDQVKGPLR 58

second Tudor domain found in AT-rich interactive domain-containing protein ARID4 family; The family contains ARID4A and its paralog ARID4B, both of which are retinoblastoma (RB)-binding proteins that function as coactivators to enhance the androgen receptor (AR) and RB transcriptional activity, and play important roles in the AR and RB pathways to control male fertility. They also act as the leukemia and tumor suppressors involved in epigenetic regulation in leukemia and Prader-Willi/Angelman syndromes. Moreover, they associate with the mSIN3A histone deacetylase (HDAC) chromatin remodeling complex through their interaction with each other, as well as with the breast cancer associated tumor suppressor ING1 and the breast cancer metastasis suppressor BRMS1. Both ARID4A and ARID4B contain tandem Tudor domains, a PWWP domain (also known as HATH domain or RBB1NT domain), an AT-rich DNA-interacting domain (ARID, also known as BRIGHT), a chromobarrel domain, and a C-terminal R2 domain. The model corresponds to the second Tudor domain. The Tudor domain binds to proteins with dimethylated arginine or lysine residues, and may also bind methylated histone tails to facilitate protein-protein interactions.

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|...
gi 115334677   62 VGAIVETRTSDGSFQEAIISKLTDASWYTVVFDDGDERTLRRTSLCLKGERHF 114
Cdd:cd20390     1 VGATVEVKTPDGQFAEAVITKLTDASTYTVVFDDGDEKTLRRTSLCLKGERHF 53

ARID/BRIGHT DNA binding domain of AT-rich interactive domain-containing protein 4A (ARID4A) and similar proteins; ARID4A, also called retinoblastoma-binding protein 1 (RBBP1, or RBP1), is a leukemia and tumor suppressor involved in epigenetic regulation in leukemia and Prader-Willi/Angelman syndrome. It associates with the mSIN3A histone deacetylase (HDAC) chromatin remodeling complex through the interaction with the breast cancer associated tumor suppressor ING1, the breast cancer metastasis suppressor BRMS1, and the ARID4 family homolog ARID4B (also known as RBP1L1). ARID4A specifically interacts with retinoblastoma protein (pRb) and shows both HDAC-dependent and -independent repression activities. It is also involved in the pocket domain of pRb-mediated repression of E2F-dependent transcription and cellular proliferation. Moreover, it acts as a Runx2 coactivator and is involved in the regulation of osteoblastic differentiation in Runx2-osterix transcriptional cascade. ARID4A contains a Tudor domain, a PWWP domain (also known as HATH domain or RBB1NT domain), an AT-rich DNA-interacting domain (ARID, also known as BRIGHT), a chromobarrel domain, and a C-terminal R2 domain. The ARID and R2 domains are responsible for the repression activities. The Tudor, PWWP, and chromobarrel domains are all Royal Family domains, but only chromobarrel domain of ARID4A is responsible for recognizing both dsDNA and methylated histone tails, particularly H4K20me3, in chromatin remodeling and epigenetic regulation.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 115334677  311 ERDNFLQQLYKFMEDRGTPINKPPVLGYKDLNLFKLFRLVYHQGGCDNIDSGAVWKQIYMDLGIPILNSAASYNVKTAYR 390
Cdd:cd16882     1 ERDNFLQQLYKFMEDRGTPINKPPVLGYKDLNLFKLFRLVYQQGGCDNIESGSVWKQIYMDLGIPILNSAASYNVKTAYR 80

                  ....*..
gi 115334677  391 KYLYGFE 397
Cdd:cd16882    81 KYLYGFE 87

first Tudor domain found in AT-rich interactive domain-containing protein 4A (ARID4A) and similar proteins; ARID4A, also called retinoblastoma-binding protein 1 (RBBP1 or RBP1), is a leukemia and tumor suppressor involved in epigenetic regulation in leukemia and Prader-Willi/Angelman syndromes. It associates with the mSIN3A histone deacetylase (HDAC) chromatin remodeling complex through its interaction with the breast cancer associated tumor suppressor ING1, the breast cancer metastasis suppressor BRMS1, and the ARID4 family homolog ARID4B ( also known as RBP1L1). ARID4A specifically interacts with retinoblastoma protein (pRb) and shows both HDAC -dependent and -independent repression activities. It also acts as a Runx2 coactivator and is involved in the regulation of osteoblastic differentiation in Runx2-osterix transcriptional cascade. ARID4A contains tandem Tudor domains, a PWWP domain (also known as HATH domain or RBB1NT domain), an AT-rich DNA-interacting domain (ARID, also known as BRIGHT), a chromobarrel domain, and a C-terminal R2 domain. The ARID and R2 domains are responsible for the repression activities. The Tudor, PWWP, and chromobarrel domains are all Royal Family domains, but only the chromobarrel domain of ARID4A is responsible for recognizing both dsDNA and methylated histone tails, particularly H4K20me3, in chromatin remodeling and epigenetic regulation. The model corresponds to the first Tudor domain. The Tudor domain binds to proteins with dimethylated arginine or lysine residues, and may also bind methylated histone tails to facilitate protein-protein interactions.

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 115334677    4 ADEPAYLTVGTDVSAKYRGAFCEAKIKTVKRLVKVKVLLKQDNTTQLVQDDQVKGPLR 61
Cdd:cd20459     1 ADEPAYLTVGTDVSAKYRGAFCEAKIKTVKRLVKVKVLLKGDNSTQLVQDDQVKGPLR 58

chromo barrel domain of retinoblastoma binding protein 1, and similar proteins; Retinoblastoma-binding protein 1 (RBP1), also termed AT-rich interaction domain 4A, is a ubiquitously expressed nuclear protein. RBP1 is a tumor and leukemia suppressor that binds both methylated histone tails and DNA, and is involved in epigenetic regulation in leukemia and Prader-Willi/Angelman syndromes. The chromo barrel domain of RBP1 has been reported to recognize histone H4K20me3 weakly, and this binding is enhanced by the simultaneous binding of DNA. RBP1 binds directly, with several other proteins, to retinoblastoma protein (pRB) which regulates cell proliferation; pRB represses transcription by recruiting RBP1. SH3-fold-beta-barrel domains of the chromo-like superfamily include chromodomains, chromo shadow domains, and chromo barrel domains, and are implicated in the recognition of lysine-methylated histone tails and nucleic acids. The chromodomain differs, in that it lacks the first strand of the SH3-fold-beta-barrel. This first strand is altered by insertion in the chromo shadow domains, and chromo barrel domains are typical SH3-fold-beta-barrel domains with sequence similarity to the canonical chromodomain.

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*....
gi 115334677  577 TKVKVKYGRGKTQKIYEASIKSTEIDDGEVLYLVHYYGWNVRYDEWVKADRIIWPLDKG 635
Cdd:cd18641     1 TKVKVKYGRGKTQKIYEASIKSTEIDDGEVLYLVHYYGWNVRYDEWVKADRIIWPLDKG 59

ARID/BRIGHT DNA binding domain; This domain is know as ARID for AT-Rich Interaction Domain, and also known as the BRIGHT domain.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 115334677   312 RDNFLQQLYKFMEDRGTPINKPPVLGYKDLNLFKLFRLVYHQGGCDNIDSGAVWKQIYMDLGIPILNSAASYNVKTAYRK 391
Cdd:pfam01388    2 KELFLKSLRKFHEKRGTPLKQIPVIGGKPVDLYKLYKAVQKLGGYDKVTEKNLWREVAEKLGFPPSAASAATQLKQIYEK 81

                   ....*.
gi 115334677   392 YLYGFE 397
Cdd:pfam01388   82 YLLPYE 87

Tudor domain; Domain of unknown function present in several RNA-binding proteins. 10 copies in the Drosophila Tudor protein. Initial proposal that the survival motor neuron gene product contain a Tudor domain are corroborated by more recent database search techniques such as PSI-BLAST (unpublished).

                            10        20        30        40        50
                    ....*....|....*....|....*....|....*....|....*....|....*..
gi 115334677     58 GPLRVGAIVETRTSDGSFQEAIISKLTDASWYTVVFDD-GDERTLRRTSLCLKGERH 113
Cdd:smart00333    1 PTFKVGDKVAARWEDGEWYRARIVKVDGEQLYEVFFIDyGNEEVVPPSDLRQLPEEL 57

MYST -like histone acetyltransferase; Provisional

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*.
gi 115334677  576 GTKVKVKY---GRGKTQKIYEASiKSTEIDDGEVLYLVHYYGWNVRYDEWVKADRI 628
Cdd:PLN00104   57 GTRVMCRWrfdGKYHPVKVIERR-RGGSGGPNDYEYYVHYTEFNRRLDEWVKLEQL 111

ARID/BRIGHT DNA binding domain of AT-rich interactive domain-containing protein 4A (ARID4A) and similar proteins; ARID4A, also called retinoblastoma-binding protein 1 (RBBP1, or RBP1), is a leukemia and tumor suppressor involved in epigenetic regulation in leukemia and Prader-Willi/Angelman syndrome. It associates with the mSIN3A histone deacetylase (HDAC) chromatin remodeling complex through the interaction with the breast cancer associated tumor suppressor ING1, the breast cancer metastasis suppressor BRMS1, and the ARID4 family homolog ARID4B (also known as RBP1L1). ARID4A specifically interacts with retinoblastoma protein (pRb) and shows both HDAC-dependent and -independent repression activities. It is also involved in the pocket domain of pRb-mediated repression of E2F-dependent transcription and cellular proliferation. Moreover, it acts as a Runx2 coactivator and is involved in the regulation of osteoblastic differentiation in Runx2-osterix transcriptional cascade. ARID4A contains a Tudor domain, a PWWP domain (also known as HATH domain or RBB1NT domain), an AT-rich DNA-interacting domain (ARID, also known as BRIGHT), a chromobarrel domain, and a C-terminal R2 domain. The ARID and R2 domains are responsible for the repression activities. The Tudor, PWWP, and chromobarrel domains are all Royal Family domains, but only chromobarrel domain of ARID4A is responsible for recognizing both dsDNA and methylated histone tails, particularly H4K20me3, in chromatin remodeling and epigenetic regulation.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 115334677  311 ERDNFLQQLYKFMEDRGTPINKPPVLGYKDLNLFKLFRLVYHQGGCDNIDSGAVWKQIYMDLGIPILNSAASYNVKTAYR 390
Cdd:cd16882     1 ERDNFLQQLYKFMEDRGTPINKPPVLGYKDLNLFKLFRLVYQQGGCDNIESGSVWKQIYMDLGIPILNSAASYNVKTAYR 80

                  ....*..
gi 115334677  391 KYLYGFE 397
Cdd:cd16882    81 KYLYGFE 87

ARID/BRIGHT DNA binding domain of AT-rich interactive domain-containing proteins ARID4A, ARID4B and similar proteins; This subfamily contains ARID4A and its paralog ARID4B, both of which are retinoblastoma (Rb)-binding proteins that function as coactivators to enhance the androgen receptor (AR) and Rb transcriptional activity, and play important roles in the AR and Rb pathways to control male fertility. They also act as the leukemia and tumor suppressors involved in epigenetic regulation in leukemia and Prader-Willi/Angelman syndrome. Moreover, they associate with the mSIN3A histone deacetylase (HDAC) chromatin remodeling complex through the interaction with each other, as well as with the breast cancer associated tumor suppressor ING1 and the breast cancer metastasis suppressor BRMS1. Both ARID4A and ARID4B contain a Tudor domain, a PWWP domain (also known as HATH domain or RBB1NT domain), an AT-rich DNA-interacting domain (ARID, also known as BRIGHT), a chromobarrel domain, and a C-terminal R2 domain.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 115334677  312 RDNFLQQLYKFMEDRGTPINKPPVLGYKDLNLFKLFRLVYHQGGCDNIDSGAVWKQIYMDLGIPILNSAASYNVKTAYRK 391
Cdd:cd16868     2 KENFLEQLYKFMEDRGTPINKPPVLGYKDLDLFKLYKLVQELGGMERVSQGAKWRSIYQQLGIPVLNSAASHNIKQAYKK 81

                  ....*.
gi 115334677  392 YLYGFE 397
Cdd:cd16868    82 YLYAFE 87

first Tudor domain found in AT-rich interactive domain-containing protein 4A (ARID4A) and similar proteins; ARID4A, also called retinoblastoma-binding protein 1 (RBBP1 or RBP1), is a leukemia and tumor suppressor involved in epigenetic regulation in leukemia and Prader-Willi/Angelman syndromes. It associates with the mSIN3A histone deacetylase (HDAC) chromatin remodeling complex through its interaction with the breast cancer associated tumor suppressor ING1, the breast cancer metastasis suppressor BRMS1, and the ARID4 family homolog ARID4B ( also known as RBP1L1). ARID4A specifically interacts with retinoblastoma protein (pRb) and shows both HDAC -dependent and -independent repression activities. It also acts as a Runx2 coactivator and is involved in the regulation of osteoblastic differentiation in Runx2-osterix transcriptional cascade. ARID4A contains tandem Tudor domains, a PWWP domain (also known as HATH domain or RBB1NT domain), an AT-rich DNA-interacting domain (ARID, also known as BRIGHT), a chromobarrel domain, and a C-terminal R2 domain. The ARID and R2 domains are responsible for the repression activities. The Tudor, PWWP, and chromobarrel domains are all Royal Family domains, but only the chromobarrel domain of ARID4A is responsible for recognizing both dsDNA and methylated histone tails, particularly H4K20me3, in chromatin remodeling and epigenetic regulation. The model corresponds to the first Tudor domain. The Tudor domain binds to proteins with dimethylated arginine or lysine residues, and may also bind methylated histone tails to facilitate protein-protein interactions.

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 115334677    4 ADEPAYLTVGTDVSAKYRGAFCEAKIKTVKRLVKVKVLLKQDNTTQLVQDDQVKGPLR 61
Cdd:cd20459     1 ADEPAYLTVGTDVSAKYRGAFCEAKIKTVKRLVKVKVLLKGDNSTQLVQDDQVKGPLR 58

chromo barrel domain of retinoblastoma binding protein 1, and similar proteins; Retinoblastoma-binding protein 1 (RBP1), also termed AT-rich interaction domain 4A, is a ubiquitously expressed nuclear protein. RBP1 is a tumor and leukemia suppressor that binds both methylated histone tails and DNA, and is involved in epigenetic regulation in leukemia and Prader-Willi/Angelman syndromes. The chromo barrel domain of RBP1 has been reported to recognize histone H4K20me3 weakly, and this binding is enhanced by the simultaneous binding of DNA. RBP1 binds directly, with several other proteins, to retinoblastoma protein (pRB) which regulates cell proliferation; pRB represses transcription by recruiting RBP1. SH3-fold-beta-barrel domains of the chromo-like superfamily include chromodomains, chromo shadow domains, and chromo barrel domains, and are implicated in the recognition of lysine-methylated histone tails and nucleic acids. The chromodomain differs, in that it lacks the first strand of the SH3-fold-beta-barrel. This first strand is altered by insertion in the chromo shadow domains, and chromo barrel domains are typical SH3-fold-beta-barrel domains with sequence similarity to the canonical chromodomain.

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*....
gi 115334677  577 TKVKVKYGRGKTQKIYEASIKSTEIDDGEVLYLVHYYGWNVRYDEWVKADRIIWPLDKG 635
Cdd:cd18641     1 TKVKVKYGRGKTQKIYEASIKSTEIDDGEVLYLVHYYGWNVRYDEWVKADRIIWPLDKG 59

second Tudor domain found in AT-rich interactive domain-containing protein ARID4 family; The family contains ARID4A and its paralog ARID4B, both of which are retinoblastoma (RB)-binding proteins that function as coactivators to enhance the androgen receptor (AR) and RB transcriptional activity, and play important roles in the AR and RB pathways to control male fertility. They also act as the leukemia and tumor suppressors involved in epigenetic regulation in leukemia and Prader-Willi/Angelman syndromes. Moreover, they associate with the mSIN3A histone deacetylase (HDAC) chromatin remodeling complex through their interaction with each other, as well as with the breast cancer associated tumor suppressor ING1 and the breast cancer metastasis suppressor BRMS1. Both ARID4A and ARID4B contain tandem Tudor domains, a PWWP domain (also known as HATH domain or RBB1NT domain), an AT-rich DNA-interacting domain (ARID, also known as BRIGHT), a chromobarrel domain, and a C-terminal R2 domain. The model corresponds to the second Tudor domain. The Tudor domain binds to proteins with dimethylated arginine or lysine residues, and may also bind methylated histone tails to facilitate protein-protein interactions.

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|...
gi 115334677   62 VGAIVETRTSDGSFQEAIISKLTDASWYTVVFDDGDERTLRRTSLCLKGERHF 114
Cdd:cd20390     1 VGATVEVKTPDGQFAEAVITKLTDASTYTVVFDDGDEKTLRRTSLCLKGERHF 53

second Tudor domain found in AT-rich interactive domain-containing protein 4A (ARID4A) and similar proteins; ARID4A, also called retinoblastoma-binding protein 1 (RBBP1 or RBP1), is a leukemia and tumor suppressor involved in epigenetic regulation in leukemia and Prader-Willi/Angelman syndromes. It associates with the mSIN3A histone deacetylase (HDAC) chromatin remodeling complex through its interaction with the breast cancer associated tumor suppressor ING1, the breast cancer metastasis suppressor BRMS1, and the ARID4 family homolog ARID4B ( also known as RBP1L1). ARID4A specifically interacts with retinoblastoma protein (pRb) and shows both HDAC -dependent and -independent repression activities. It also acts as a Runx2 coactivator and is involved in the regulation of osteoblastic differentiation in Runx2-osterix transcriptional cascade. ARID4A contains tandem Tudor domains, a PWWP domain (also known as HATH domain or RBB1NT domain), an AT-rich DNA-interacting domain (ARID, also known as BRIGHT), a chromobarrel domain, and a C-terminal R2 domain. The ARID and R2 domains are responsible for the repression activities. The Tudor, PWWP, and chromobarrel domains are all Royal Family domains, but only the chromobarrel domain of ARID4A is responsible for recognizing both dsDNA and methylated histone tails, particularly H4K20me3, in chromatin remodeling and epigenetic regulation. The model corresponds to the second Tudor domain. The Tudor domain binds to proteins with dimethylated arginine or lysine residues, and may also bind methylated histone tails to facilitate protein-protein interactions.

                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|
gi 115334677   62 VGAIVETRTSDGSFQEAIISKLTDASWYTVVFDDGDERTLRRTSLCLKGERHFAESETLD 121
Cdd:cd20461     1 VGAIVETRTSDGSFQEAIISKLTDASWYTVVFDDGDERTLRRTSLCLKGERHFAESETLD 60

first Tudor domain found in AT-rich interactive domain-containing protein 4B (ARID4B) and similar proteins; ARID4B, also called 180 kDa Sin3-associated polypeptide (p180), breast cancer-associated antigen BRCAA1, histone deacetylase complex subunit SAP180, or retinoblastoma-binding protein 1-like 1 (RBP1L1 or RBBP1L1), is a leukemia and tumor suppressor involved in epigenetic regulation in leukemia and Prader-Willi/Angelman syndromes. It associates with the mSIN3A histone deacetylase (HDAC) chromatin remodeling complex through its interaction with the breast cancer associated tumor suppressor ING1, the breast cancer metastasis suppressor BRMS1, and ARID4A ( also known as RBP1). ARID4B plays a causative role in metastatic progression of breast cancer. It may also be associated with regulating the cell cycle. ARID4B contains tandem Tudor domains, a PWWP domain (also known as HATH domain or RBB1NT domain), an AT-rich DNA-interacting domain (ARID, also known as BRIGHT), a chromobarrel domain, and a C-terminal R2 domain. The model corresponds to the first Tudor domain. The Tudor domain binds to proteins with dimethylated arginine or lysine residues, and may also bind methylated histone tails to facilitate protein-protein interactions.

                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 115334677    1 MKAADEPAYLTVGTDVSAKYRGAFCEAKIKTVKRLVKVKVLLKQDNTTQLVQDDQVKGPLR 61
Cdd:cd20460     1 MKALDEPPYLTVGTDVSAKYRGAFCEAKIKTAKRLVKVKVTFRHDSSTVEVQDDHIKGPLK 61

first Tudor domain found in AT-rich interactive domain-containing protein ARID4 family; The family contains ARID4A and its paralog ARID4B, both of which are retinoblastoma (RB)-binding proteins that function as coactivators to enhance the androgen receptor (AR) and RB transcriptional activity, and play important roles in the AR and RB pathways to control male fertility. They also act as the leukemia and tumor suppressors involved in epigenetic regulation in leukemia and Prader-Willi/Angelman syndromes. Moreover, they associate with the mSIN3A histone deacetylase (HDAC) chromatin remodeling complex through their interaction with each other, as well as with the breast cancer associated tumor suppressor ING1 and the breast cancer metastasis suppressor BRMS1. Both ARID4A and ARID4B contain tandem Tudor domains, a PWWP domain (also known as HATH domain or RBB1NT domain), an AT-rich DNA-interacting domain (ARID, also known as BRIGHT), a chromobarrel domain, and a C-terminal R2 domain. The model corresponds to the first Tudor domain. The Tudor domain binds to proteins with dimethylated arginine or lysine residues, and may also bind methylated histone tails to facilitate protein-protein interactions.

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|...
gi 115334677    9 YLTVGTDVSAKYRGAFCEAKIKTVKRLVKVKVLLKQDNTTQLVQDDQVKGPLR 61
Cdd:cd20389     1 YLPVGTEVSAKYRGAFCEAKVKKVKKLVKCKVTFKDNGTSVVVSDDNIKGPLK 53

ARID/BRIGHT DNA binding domain of AT-rich interactive domain-containing proteins ARID5A, ARID5B, and similar proteins; This subfamily contains ARID5A and its paralog ARID5B. ARID5A, also called modulator recognition factor 1 (MRF-1), is an estrogen receptor alpha (ER alpha)-interacting protein that is expressed abundantly in cardiovascular tissues and suppresses ER alpha-induced transactivation. It also plays an important role in the promotion of inflammatory processes and autoimmune diseases. ARID5B, also called MRF1-like protein or modulator recognition factor 2 (MRF-2), is a DNA-binding protein that directly interacts with plant homeodomain (PHD) finger 2 (PHF2) to form a protein kinase A (PKA)-dependent PHF2-ARID5B histone H3K9Me2 demethylase complex. It also functions as a transcriptional co-regulator for the transcription factor sex determining region Y (SRY)-box protein 9 (Sox9) and promotes chondrogenesis through histone modification. Moreover, ARID5B is highly expressed in the cardiovascular system and may play essential roles in the phenotypic change of smooth muscle cells (SMCs) through its regulation of SMC differentiation. Both ARID5A and ARID5B contain an AT-rich DNA-interacting domain (ARID, also known as BRIGHT).

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 115334677  314 NFLQQLYKFMEDRGTPINKPPVLGYKDLNLFKLFRLVYHQGGCDNIDSGAVWKQIYMDLG-IPILNSAASYNVKTaYRKY 392
Cdd:cd16869     4 AFLKLLYKFMKDRGTPIERIPHLGFKQIDLYTFFKLVQKLGGYEQVTAKRLWKHVYDELGgNPSSTSAATCTRRH-YEKL 82

                  ....*
gi 115334677  393 LYGFE 397
Cdd:cd16869    83 LLPYE 87

ARID/BRIGHT DNA binding domain found in AT-rich interactive domain-containing proteins ARID1A, ARID1B and similar proteins; This subfamily contains ARID1A and its paralog ARID1B. They are mutually exclusive components of human SWItch/Sucrose NonFermentable (SWI/SNF) chromatin remodeling protein complexes, but display different functions in development and cell-cycle control. SWI/SNF complexes containing ARID1A have an antiproliferative function, whereas the one harboring ARID1B shows a pro-proliferative function. ARID1A functions as an important tumor suppressor in various tumor types. It has been implicated in cell-cycle arrest, as well as in the interactions with p53 and BRG1/BRM and with topoisomerase II alpha. ARID1B may be considered as a potential therapeutic target for ARID1A-mutant cancers. Moreover, mutations in the ARID1B gene cause Coffin-Siris syndrome, exhibiting developmental defects, and haplo-insufficiency of ARID1B is a frequent cause of intellectual disability. Mutations in the ARID1B gene also have been found in many cancers. Both ARID1A and ARID1B contain an AT-rich DNA-interacting domain (ARID, also known as BRIGHT), which binds DNA in a non-sequence-specific manner.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 115334677  312 RDNFLQQLYKFMEDRGTPINKPPVLGYKDLNLFKLFRLVYHQGGCDNIDSGAVWKQIYMDLGIPILNSAAsYNVKTAYRK 391
Cdd:cd16865     3 RRPFLDRLLRFMEERGSPITNCPQISKQPLDLFRLYVTVKERGGVAEVTKNKKWKEICTELNIGASSSAA-FTLRKNYIK 81

                          90
                  ....*....|
gi 115334677  392 YLYGFEeyCR 401
Cdd:cd16865    82 YLLAYE--CR 89

ARID/BRIGHT DNA binding domain of dead ringer (Dri) from Drosophila melanogaster and similar proteins; Dri, also termed retained (retn), is a nuclear protein with a sequence-specific DNA-binding domain termed AT-rich DNA-interacting domain (ARID, also known as BRIGHT). It is a founding member of the ARID family. Sequence comparison shows that DRI belongs to the "extended" or e-ARID subfamily, which exhibits an extended region of similarity either side of the ARID. Dri plays an important role in embryogenesis. It functions as an essential transcription factor involved in aspects of dorsal/ventral and anterior/posterior axis patterning, as well as myogenesis and hindgut development.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 115334677  312 RDNFLQQLYKFMEDRGTPINKPPVLGYKDLNLFKLFRLVYHQGGCDNIDSGAVWKQIYMDLGIPILNSAASYNVKTAYRK 391
Cdd:cd16881    20 RKEFLDDLFSFMQKRGTPVNRIPIMAKQVLDLYELYNLVVARGGLVEVINKKLWREITKGLHLPSSITSAAFTLRTQYMK 99

                  ....*.
gi 115334677  392 YLYGFE 397
Cdd:cd16881   100 YLYPYE 105

malignant brain tumor (MBT) repeat found in PHD finger protein 20-like protein 1 (PHF20L1) and similar domains; PHF20L1 associates with SOX2, antagonizes SOX2 ubiquitination and the sequential degradation induced by MLL1/WDR5 complexes. It binds both monomethylated Lys-42 and Lys-117 in SOX2 and thereby prevents SOX2 proteolysis. PHF20L1 also reads and controls enzyme levels of methylated DNMT1 in cells, thus representing a novel antagonist of DNMT1 degradation. PHF20L1 contains one MBT (malignant brain tumor) repeat. The MBT repeat is a protein module that recognizes methylated lysine residues on histones. MBT repeats contain a semi-aromatic cage to accommodate methyllysine and show specificity towards the lower methylation states of lysine. This model corresponds to the MBT repeat of PHF20L1 and similar domains that contains the semi-aromatic cage that may bind methylated lysine residues.

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 115334677  576 GTKVKVKYGRGKtqkIYEASIKstEIDDGEVLYLVHYYGWNVRYDEWVKAD--RIIWP 631
Cdd:cd20104     4 GDRVDALDGEGK---WYEAKIV--EVDEEENKVLVHYDGWSSRYDEWIDRDseRLRPL 56

ARID/BRIGHT DNA binding domain of AT-rich interactive domain-containing protein 3A (ARID3A) and similar proteins; ARID3A, also called B-cell regulator of IgH transcription (Bright), dead ringer-like protein 1 (Dril1), or E2F-binding protein 1 (E2FBP1), is an ubiquitously expressed DNA-binding protein that has been implicated in embryonic patterning, cell lineage gene regulation, and cell cycle control, chromatin remodeling and transcriptional regulation. It was originally identified as a B cell-specific trans-activator of immunoglobulin heavy-chain (IgH) transcription, which increases immunoglobulin transcription in antigen-activated B cells and plays regulatory roles in hematopoiesis. It also functions as an E2F transcription regulator, inducing promyelocytic leukemia protein (PML) reduction and suppressing the formation of PML-nuclear bodies. It antagonizes the p16(INK4A)-Rb tumor suppressor machinery by regulating PML stability. ARID3A transcriptional activity can be modulated by SUMO (Small Ubiquitin-related Modifier) modification through the interaction with the SUMO-conjugating enzyme Ubc9. ARID3A also plays an important role in marginal zone B lymphocyte development and autoantibody production. Furthermore, ARID3A is a direct p53 target gene. It controls cell growth in a p53-dependent manner. ARID3A contains an AT-rich DNA-interacting domain (ARID, also known as BRIGHT), a SUMO-I conjugation (SUMO) motif and a multifunctional homomerization/nuclear export REKLES domain, which consists of two subdomains: a modestly conserved N-terminal REKLES alpha and a highly conserved (among ARID3 orthologous proteins) C-terminal REKLES beta.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 115334677  312 RDNFLQQLYKFMEDRGTPINKPPVLGYKDLNLFKLFRLVYHQGGCDNIDSGAVWKQIYMDLGIPILNSAASYNVKTAYRK 391
Cdd:cd16878    23 RKEFLDDLFSFMQKRGTPVNRIPIMAKQVLDLYMLYVLVTEKGGLVEVINKKLWREITKGLNLPTSITSAAFTLRTQYMK 102

                  ....*.
gi 115334677  392 YLYGFE 397
Cdd:cd16878   103 YLYPYE 108

ARID/BRIGHT DNA binding domain of AT-rich interactive domain-containing protein 5A (ARID5A) and similar proteins; ARID5A, also called modulator recognition factor 1 (MRF-1), is an estrogen receptor alpha (ER alpha)-interacting protein that is expressed abundantly in cardiovascular tissues and suppresses ER alpha-induced transactivation. It also associates with thyroid receptor alpha (TR alpha) and retinoid X receptor alpha (RXR alpha) in a ligand-dependent manner, and with ER beta, androgen receptor (AR), and the retinoic acid receptor (RAR) in a ligand-independent manner. ARID5A functions as a negative regulator of RORgamma-induced Th17 cell differentiation and may be involved in the pathogenesis of rheumatoid arthritis (RA). Moreover, it is an important transcriptional partner of the transcription factor sex determining region Y (SRY)-box protein 9 (Sox9) in stimulation of chondrocyte-specific transcription. Meanwhile, ARID5A plays an important role in promotion of inflammatory processes and autoimmune diseases. It works as a unique RNA binding protein, which stabilizes interleukin-6 (IL-6) but not tumor necrosis factor-alpha (TNF-alpha) mRNA through binding to the 3' untranslated region (UTR) of IL-6 mRNA, and inhibits the destabilizing effect of regnase-1 on IL-6 mRNA. ARID5A contains an AT-rich DNA-interacting domain (ARID, also known as BRIGHT).

                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 115334677  315 FLQQLYKFMEDRGTPINKPPVLGYKDLNLFKLFRLVYHQGGCDNIDSGAVWKQIYMDLGipilNSAASYNVKTAYRKY 392
Cdd:cd16884     5 FLVNLYKFMKERNTPIERIPHLGFKQINLWKIYKAVEKLGGYELVTARRLWKNVYDELG----GSPGSTSAATCTRRH 78

ARID/BRIGHT DNA binding domain of AT-rich interactive domain-containing protein 1B (ARID1B) and similar proteins; ARID1B, also called BRG1-associated factor 250b (BAF250B), BRG1-binding protein ELD/OSA1, Osa homolog 2 (Osa2), or p250R, is the largest subunit of ATP-dependent SWItch/sucrose nonfermentable (SWI/SNF) chromatin remodeling complex, which plays a critical role in transcriptional control and gene expression. ARID1B exhibits tumour-suppressor activities in pancreatic cancer cell lines. Mutations in the ARID1B gene cause Coffin-Siris syndrome, exhibiting developmental defects, and haplo-insufficiency of ARID1B is a frequent cause of intellectual disability. Moreover, mutations in the ARID1B gene have been found in many cancers. ARID1B contains an AT-rich DNA-interacting domain (ARID, also known as BRIGHT), which binds DNA in a non-sequence-specific manner similar to ARID1A.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 115334677  312 RDNFLQQLYKFMEDRGTPINKPPVLGYKDLNLFKLFRLVYHQGGCDNIDSGAVWKQIYMDLGIPILNSAASyNVKTAYRK 391
Cdd:cd16877     3 RKLWVDRYLTFMEERGTPVASLPAVGKKPLDLFRLYVCVKEIGGLAQVNKNKKWRELATNLNVGTSSSAAS-SLKKQYIQ 81

                  ....*.
gi 115334677  392 YLYGFE 397
Cdd:cd16877    82 YLFAFE 87

RNA binding activity-knot of a chromodomain; This is a novel knotted tudor domain which is required for binding to RNA. The know influences the loop conformation of the helical turn Ht2 - residues 61-6 3- that is located at the side opposite the knot in the tudor domain-chromodomain; stabilization of Ht2 is essential for RNA binding.

                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|...
gi 115334677   576 GTKVkvkYGRGKTQKIYEASIKSTEIDDGEVLYLVHYYGWNVRYDEWVKADRI 628
Cdd:pfam11717    4 GCKV---LVRKRDGEWRLAEILSIRPKKGKYEYYVHYVGFNKRLDEWVPEDRI 53

ARID/BRIGHT DNA binding domain of AT-rich interactive domain-containing protein 1A (ARID1A) and similar proteins; ARID1A, also called B120, BRG1-associated factor 250a (BAF250A), Osa homolog 1(OSA1), SWI-like protein, SWI/SNF complex protein p270, or SWI/SNF-related, matrix-associated, actin-dependent regulator of chromatin subfamily F member 1 (SWI1), has been identified as a novel tumor suppressor in various tumor types. It interacts with BRG1 adenosine triphosphatase to form a SWItch/Sucrose NonFermentable (SWI/SNF) chromatin remodeling protein complex, which plays a critical role in transcriptional control and gene expression. ARID1A contains an AT-rich DNA-interacting domain (ARID, also known as BRIGHT), and Eld/Osa homology domains (EHD) 1 and 2 within the C-terminus. The ARID in ARID1A binds nonspecific DNA in general and plays an important role in targeting SWI/SNF to chromatin. The EHD1 may be capable of mediating an intramolecular association with EHD2, and/or an intermolecular association resulting in homo- or hetero-dimerization. The EHD2 binds Swi2/Brahma homologue Brahma-related gene 1 (BRG1, also known as Snf2b), a human homologue of yeast Swi2.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 115334677  312 RDNFLQQLYKFMEDRGTPINKPPVLGYKDLNLFKLFRLVYHQGGCDNIDSGAVWKQIYMDLGIPILNSAASyNVKTAYRK 391
Cdd:cd16876     3 RKMWVDRYLAFTEEKAMGMTNLPAVGRKPLDLYRLYVSVKEIGGLTQVNKNKKWRELATNLNVGTSSSAAS-SLKKQYIQ 81

                  ....*.
gi 115334677  392 YLYGFE 397
Cdd:cd16876    82 CLYAFE 87

Tudor domain superfamily; The Tudor domain is a conserved structural domain, originally identified in the Tudor protein of Drosophila, that adopts a beta-barrel-like core structure containing four short beta-strands followed by an alpha-helical region. It binds to proteins with dimethylated arginine or lysine residues, and may also bind methylated histone tails to facilitate protein-protein interactions. Tudor domain-containing proteins may mediate protein-protein interactions required for various DNA-templated biological processes, such as RNA metabolism, as well as histone modification and the DNA damage response. Members of this superfamily contain one or more copies of the Tudor domain.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*
gi 115334677   63 GAIVETR-TSDGSFQEAIISKLTDASWYTVVFDDGDERTLRRTSL 106
Cdd:cd04508     1 GDRVEAKwSDDGQWYPATVVAVNDDGKYTVLFDDGNEEEVSEDDI 45

ARID/BRIGHT DNA binding domain of lysine-specific demethylase 5B (KDM5B); KDM5B, also called cancer/testis antigen 31 (CT31), histone demethylase JARID1B, Jumonji/ARID domain-containing protein 1B (JARID1B), PLU-1, or retinoblastoma-binding protein 2 homolog 1 (RBP2-H1 or RBBP2H1A), is a member of the JARID subfamily within the JmjC proteins. It has a restricted expression pattern in the testis, ovary, and transiently in the mammary gland of the pregnant female and has been shown to be upregulated in breast cancer, prostate cancer, and lung cancer, suggesting a potential role in tumorigenesis. KDM5B acts as a histone demethylase that catalyzes the removal of trimethylation of lysine 4 on histone H3 (H3K4me3), induced by polychlorinated biphenyls (PCBs). It also mediates demethylation of H3K4me2 and H3K4me1. Moreover, KDM5B functions as a negative regulator of hematopoietic stem cell (HSC) self-renewal and progenitor cell activity. KDM5B has also been shown to interact with the DNA binding transcription factors BF-1 and PAX9, as well as TIEG1/KLF10 (transforming growth factor-beta inducible earlygene-1/Kruppel-like transcription factor 10), and possibly function as a transcriptional corepressor. KDM5B contains the catalytic JmjC domain, a JmjN domain, an AT-rich DNA-interacting domain (ARID, also known as BRIGHT), a C5HC2 zinc finger, as well as three plant homeodomain (PHD) fingers.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 115334677  314 NFLQQLYKFMEDRGTPInKPPVLGYKDLNLFKLFRLVYHQGGCDNIDSGAVWKQIYMDLGIpILNSAASYNVKTAYRKYL 393
Cdd:cd16874     9 NFLDQIAKFWELQGCTL-KIPHVERKILDLFQLNKLVAEEGGFDLVCKERKWTKIATKMGF-APGKAVGSHIRAHYERIL 86

                  ...
gi 115334677  394 YGF 396
Cdd:cd16874    87 YPY 89

ARID/BRIGHT DNA binding domain of lysine-specific demethylase KDM5C and KDM5D; This group includes KDM5C and KDM5D, both of which belong to the JARID subfamily within the JmjC proteins. KDM5C, also called histone demethylase JARID1C, Jumonji/ARID domain-containing protein 1C, protein SmcX, or protein Xe169, is a H3K4 trimethyl-histone demethylase that catalyzes demethylation of H3K4me3 and H3K4me2 to H3K4me1. It plays a role in neuronal survival and dendrite development. KDM5C defects are associated with X-linked mental retardation (XLMR). KDM5D, also called histocompatibility Y antigen (H-Y), histone demethylase JARID1D, Jumonji/ARID domain-containing protein 1D, or protein SmcY, is a male-specific antigen that shows a demethylase activity specific for di- and tri-methylated histone H3K4 (H3K4me3 and H3K4me2), and has a male-specific function as a histone H3K4 demethylase by recruiting a meiosis-regulatory protein, MSH5, to condensed DNA. KDM5D directly interacts with a polycomb-like protein Ring6a/MBLR, and plays a role in regulation of transcriptional initiation through H3K4 demethylation. Both KDM5C and KDM5D contain the catalytic JmjC domain, a JmjN domain, an AT-rich DNA-interacting domain (ARID, also known as BRIGHT), a C5HC2 zinc finger, as well as two plant homeodomain (PHD) fingers.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 115334677  314 NFLQQLYKFMEDRGTPInKPPVLGYKDLNLFKLFRLVYHQGGCDNIDSGAVWKQIYMDLGIPILNSAASYnVKTAYRKYL 393
Cdd:cd16875     6 NYLDQIAKFWEIQGSSL-KIPNVERRILDLYSLSKIVQEEGGYEAICKDRRWARVAQRLGYPPGKNIGSL-LRSHYERII 83

                  ....*.
gi 115334677  394 YGFEEY 399
Cdd:cd16875    84 YPYEMY 89

ARID/BRIGHT DNA binding domain of Arabidopsis thaliana high mobility group B proteins HMGB9, HMGB10, HMGB11, HMGB15 and similar proteins; This subfamily includes a group of conserved plant DNA-binding proteins, including HMGB9 (or ARID-HMG1), HMGB10 (or ARID-HMG2), HMGB11, and HMGB15. They have been termed ARID-HMG proteins, due to containing two DNA-binding domains, an N-terminal AT-rich DNA-interacting domain (ARID, also known as BRIGHT), and a C-terminal high mobility group (HMG)-box domain. They are widely expressed in Arabidopsis and localize primarily to the nucleus. HMGB9/ARID-HMG1 binds specifically to A/T-rich DNA. HMGB15 is a transcription factor predominantly expressed in mature pollen grains and pollen tubes. It may work in the form of a homodimer, or interact with HMGB9, HMGB10 and HMGB11 to form heteromultimers in plant cells. HMGB15 is required for pollen tube growth in Arabidopsis and is involved in transcriptional regulation through the interaction with AGL66 and AGL104.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 115334677  315 FLQQLYKFMEDRGTPInKPPVLGYKDLNLFKLFRLVYHQGGCDNIDSGAVWKQIYMDLGIPILNSAASYNVKTAYRKYLY 394
Cdd:cd16872     5 FWETLRKFHESLGTKF-RIPIVGGKELDLHRLYKEVTSRGGLEKVIKDRKWKEVAAVFNFPPTITNASFVLRKYYLSLLH 83

                  ...
gi 115334677  395 GFE 397
Cdd:cd16872    84 HYE 86

chromo barrel domain of Drosophila melanogaster males-absent on the first protein, and similar proteins; This subgroup includes the chromo barrel domains found in human Tat-interactive protein 60 (TIP60, (also known as KAT5 or HTATIP), Drosophila melanogaster males-absent on the first (MOF) protein, and Saccharomyces ESA1. SH3-fold-beta-barrel domains of the chromo-like superfamily include chromodomains, chromo shadow domains, and chromo barrel domains, and are implicated in the recognition of lysine-methylated histone tails and nucleic acids. The chromodomain differs, in that it lacks the first strand of the SH3-fold-beta-barrel. This first strand is altered by insertion in the chromo shadow domains, and chromo barrel domains are typical SH3-fold-beta-barrel domains with sequence similarity to the canonical chromo domain. The MOF-like chromo barrels may be may be auto-inhibited, i.e. they seem to have occluded peptide binding sites.

                          10        20        30
                  ....*....|....*....|....*....|...
gi 115334677  596 IKSTEIDDGEVLYLVHYYGWNVRYDEWVKADRI 628
Cdd:cd18642    19 LSRRTRKHAPPEFYVHYVELNRRLDEWITTDRI 51