Glutathione S-transferase C-terminal-like, alpha helical domain of Methionyl-tRNA synthetase ...
77-179
7.89e-46
Glutathione S-transferase C-terminal-like, alpha helical domain of Methionyl-tRNA synthetase from higher eukaryotes; Glutathione S-transferase (GST) C-terminal domain family, Methionyl-tRNA synthetase (MetRS) subfamily; This model characterizes the GST_C-like domain found in the N-terminal region of MetRS from higher eukaryotes. Aminoacyl-tRNA synthetases (aaRSs) comprise a family of enzymes that catalyze the coupling of amino acids with their matching tRNAs. This involves the formation of an aminoacyl adenylate using ATP, followed by the transfer of the activated amino acid to the 3'-adenosine moiety of the tRNA. AaRSs may also be involved in translational and transcriptional regulation, as well as in tRNA processing. MetRS is a class I aaRS, containing a Rossman fold catalytic core. It recognizes the initiator tRNA as well as the Met-tRNA for protein chain elongation. The GST_C-like domain of MetRS from higher eukaryotes is likely involved in protein-protein interactions, to mediate the formation of the multi-aaRS complex that acts as a molecular hub to coordinate protein synthesis. AaRSs from prokaryotes, which are active as dimers, do not contain this GST_C-like domain.
:
Pssm-ID: 198340 [Multi-domain] Cd Length: 102 Bit Score: 159.20 E-value: 7.89e-46
Glutathione S-transferase, N-terminal domain; This is the N-terminal (GST-N) domain containing ...
1-74
1.56e-28
Glutathione S-transferase, N-terminal domain; This is the N-terminal (GST-N) domain containing a thioredoxin fold. This domain found in methionyl-tRNA synthetase (MRS), a multi-tRNA synthetase complex (MSC) component.
:
Pssm-ID: 436537 Cd Length: 74 Bit Score: 109.02 E-value: 1.56e-28
Methionyl-tRNA synthetase [Translation, ribosomal structure and biogenesis]; Methionyl-tRNA ...
264-813
0e+00
Methionyl-tRNA synthetase [Translation, ribosomal structure and biogenesis]; Methionyl-tRNA synthetase is part of the Pathway/BioSystem: Aminoacyl-tRNA synthetases
Pssm-ID: 439913 [Multi-domain] Cd Length: 544 Bit Score: 652.56 E-value: 0e+00
methionine--tRNA ligase; The methionyl-tRNA synthetase (metG) is a class I amino acyl-tRNA ...
266-806
0e+00
methionine--tRNA ligase; The methionyl-tRNA synthetase (metG) is a class I amino acyl-tRNA ligase. This model appears to recognize the methionyl-tRNA synthetase of every species, including eukaryotic cytosolic and mitochondrial forms. The UPGMA difference tree calculated after search and alignment according to this model shows an unusual deep split between two families of MetG. One family contains forms from the Archaea, yeast cytosol, spirochetes, and E. coli, among others. The other family includes forms from yeast mitochondrion, Synechocystis sp., Bacillus subtilis, the Mycoplasmas, Aquifex aeolicus, and Helicobacter pylori. The E. coli enzyme is homodimeric, although monomeric forms can be prepared that are fully active. Activity of this enzyme in bacteria includes aminoacylation of fMet-tRNA with Met; subsequent formylation of the Met to fMet is catalyzed by a separate enzyme. Note that the protein from Aquifex aeolicus is split into an alpha (large) and beta (small) subunit; this model does not include the C-terminal region corresponding to the beta chain. [Protein synthesis, tRNA aminoacylation]
Pssm-ID: 273058 [Multi-domain] Cd Length: 530 Bit Score: 590.12 E-value: 0e+00
catalytic core domain of methioninyl-tRNA synthetases; Methionine tRNA synthetase (MetRS) catalytic core domain. This class I enzyme aminoacylates the 2'-OH of the nucleotide at the 3' of the appropriate tRNA. MetRS, which consists of the core domain and an anti-codon binding domain, functions as a monomer. However, in some species the anti-codon binding domain is followed by an EMAP domain. In this case, MetRS functions as a homodimer. The core domain is based on the Rossman fold and is responsible for the ATP-dependent formation of the enzyme bound aminoacyl-adenylate. It contains the characteristic class I HIGH and KMSKS motifs, which are involved in ATP binding. As a result of a deletion event, MetRS has a significantly shorter core domain insertion than IleRS, ValRS, and LeuR. Consequently, the MetRS insertion lacks the editing function.
Pssm-ID: 173907 [Multi-domain] Cd Length: 319 Bit Score: 498.60 E-value: 6.01e-171
Glutathione S-transferase C-terminal-like, alpha helical domain of Methionyl-tRNA synthetase ...
77-179
7.89e-46
Glutathione S-transferase C-terminal-like, alpha helical domain of Methionyl-tRNA synthetase from higher eukaryotes; Glutathione S-transferase (GST) C-terminal domain family, Methionyl-tRNA synthetase (MetRS) subfamily; This model characterizes the GST_C-like domain found in the N-terminal region of MetRS from higher eukaryotes. Aminoacyl-tRNA synthetases (aaRSs) comprise a family of enzymes that catalyze the coupling of amino acids with their matching tRNAs. This involves the formation of an aminoacyl adenylate using ATP, followed by the transfer of the activated amino acid to the 3'-adenosine moiety of the tRNA. AaRSs may also be involved in translational and transcriptional regulation, as well as in tRNA processing. MetRS is a class I aaRS, containing a Rossman fold catalytic core. It recognizes the initiator tRNA as well as the Met-tRNA for protein chain elongation. The GST_C-like domain of MetRS from higher eukaryotes is likely involved in protein-protein interactions, to mediate the formation of the multi-aaRS complex that acts as a molecular hub to coordinate protein synthesis. AaRSs from prokaryotes, which are active as dimers, do not contain this GST_C-like domain.
Pssm-ID: 198340 [Multi-domain] Cd Length: 102 Bit Score: 159.20 E-value: 7.89e-46
Glutathione S-transferase, N-terminal domain; This is the N-terminal (GST-N) domain containing ...
1-74
1.56e-28
Glutathione S-transferase, N-terminal domain; This is the N-terminal (GST-N) domain containing a thioredoxin fold. This domain found in methionyl-tRNA synthetase (MRS), a multi-tRNA synthetase complex (MSC) component.
Pssm-ID: 436537 Cd Length: 74 Bit Score: 109.02 E-value: 1.56e-28
A conserved domain of 46 amino acids, called WHEP-TRS has been shown.to exist in a number of ...
847-899
9.65e-17
A conserved domain of 46 amino acids, called WHEP-TRS has been shown.to exist in a number of higher eukaryote aminoacyl-transfer RNA synthetases; This domain is present one to six times in the several enzymes. There are three copies in mammalian multifunctional aminoacyl-tRNA synthetase in a region that separates the N-terminal glutamyl-tRNA synthetase domain from the C-terminal prolyl-tRNA synthetase domain, and six copies in the intercatalytic region of the Drosophila enzyme. The domain is found at the N-terminal extremity of the mammalian tryptophanyl- tRNA synthetase and histidyl-tRNA synthetase, and the mammalian, insect, nematode and plant glycyl- tRNA synthetases. This domain could contain a central alpha-helical region and may play a role in the association of tRNA-synthetases into multienzyme complexes.
Pssm-ID: 214960 [Multi-domain] Cd Length: 56 Bit Score: 74.69 E-value: 9.65e-17
Glutathione S-transferase, C-terminal domain; GST conjugates reduced glutathione to a variety ...
111-180
4.39e-05
Glutathione S-transferase, C-terminal domain; GST conjugates reduced glutathione to a variety of targets including S-crystallin from squid, the eukaryotic elongation factor 1-gamma, the HSP26 family of stress-related proteins and auxin-regulated proteins in plants. Stringent starvation proteins in E. coli are also included in the alignment but are not known to have GST activity. The glutathione molecule binds in a cleft between N and C-terminal domains. The catalytically important residues are proposed to reside in the N-terminal domain. In plants, GSTs are encoded by a large gene family (48 GST genes in Arabidopsis) and can be divided into the phi, tau, theta, zeta, and lambda classes.
Pssm-ID: 459647 [Multi-domain] Cd Length: 93 Bit Score: 43.04 E-value: 4.39e-05
GST_N family, unknown subfamily 3; composed of uncharacterized bacterial proteins with ...
27-68
5.38e-03
GST_N family, unknown subfamily 3; composed of uncharacterized bacterial proteins with similarity to GSTs. GSTs are cytosolic dimeric proteins involved in cellular detoxification by catalyzing the conjugation of glutathione (GSH) with a wide range of endogenous and xenobiotic alkylating agents, including carcinogens, therapeutic drugs, environmental toxins and products of oxidative stress. GSTs also show GSH peroxidase activity and are involved in the synthesis of prostaglandins and leukotrienes. The GST fold contains an N-terminal TRX-fold domain and a C-terminal alpha helical domain, with an active site located in a cleft between the two domains.
Pssm-ID: 239347 [Multi-domain] Cd Length: 73 Bit Score: 36.47 E-value: 5.38e-03
Methionyl-tRNA synthetase [Translation, ribosomal structure and biogenesis]; Methionyl-tRNA ...
264-813
0e+00
Methionyl-tRNA synthetase [Translation, ribosomal structure and biogenesis]; Methionyl-tRNA synthetase is part of the Pathway/BioSystem: Aminoacyl-tRNA synthetases
Pssm-ID: 439913 [Multi-domain] Cd Length: 544 Bit Score: 652.56 E-value: 0e+00
methionine--tRNA ligase; The methionyl-tRNA synthetase (metG) is a class I amino acyl-tRNA ...
266-806
0e+00
methionine--tRNA ligase; The methionyl-tRNA synthetase (metG) is a class I amino acyl-tRNA ligase. This model appears to recognize the methionyl-tRNA synthetase of every species, including eukaryotic cytosolic and mitochondrial forms. The UPGMA difference tree calculated after search and alignment according to this model shows an unusual deep split between two families of MetG. One family contains forms from the Archaea, yeast cytosol, spirochetes, and E. coli, among others. The other family includes forms from yeast mitochondrion, Synechocystis sp., Bacillus subtilis, the Mycoplasmas, Aquifex aeolicus, and Helicobacter pylori. The E. coli enzyme is homodimeric, although monomeric forms can be prepared that are fully active. Activity of this enzyme in bacteria includes aminoacylation of fMet-tRNA with Met; subsequent formylation of the Met to fMet is catalyzed by a separate enzyme. Note that the protein from Aquifex aeolicus is split into an alpha (large) and beta (small) subunit; this model does not include the C-terminal region corresponding to the beta chain. [Protein synthesis, tRNA aminoacylation]
Pssm-ID: 273058 [Multi-domain] Cd Length: 530 Bit Score: 590.12 E-value: 0e+00
catalytic core domain of methioninyl-tRNA synthetases; Methionine tRNA synthetase (MetRS) catalytic core domain. This class I enzyme aminoacylates the 2'-OH of the nucleotide at the 3' of the appropriate tRNA. MetRS, which consists of the core domain and an anti-codon binding domain, functions as a monomer. However, in some species the anti-codon binding domain is followed by an EMAP domain. In this case, MetRS functions as a homodimer. The core domain is based on the Rossman fold and is responsible for the ATP-dependent formation of the enzyme bound aminoacyl-adenylate. It contains the characteristic class I HIGH and KMSKS motifs, which are involved in ATP binding. As a result of a deletion event, MetRS has a significantly shorter core domain insertion than IleRS, ValRS, and LeuR. Consequently, the MetRS insertion lacks the editing function.
Pssm-ID: 173907 [Multi-domain] Cd Length: 319 Bit Score: 498.60 E-value: 6.01e-171
Anticodon-binding domain of methionyl tRNA synthetases; This domain is found in methionyl tRNA ...
642-771
1.74e-46
Anticodon-binding domain of methionyl tRNA synthetases; This domain is found in methionyl tRNA synthetases (MetRS), which belong to the class Ia aminoacyl tRNA synthetases. It lies C-terminal to the catalytic core domain, and recognizes and specifically binds to the tRNA anticodon (CAU). MetRS catalyzes the transfer of methionine to the 3'-end of its tRNA.
Pssm-ID: 153411 [Multi-domain] Cd Length: 129 Bit Score: 162.27 E-value: 1.74e-46
Glutathione S-transferase C-terminal-like, alpha helical domain of Methionyl-tRNA synthetase ...
77-179
7.89e-46
Glutathione S-transferase C-terminal-like, alpha helical domain of Methionyl-tRNA synthetase from higher eukaryotes; Glutathione S-transferase (GST) C-terminal domain family, Methionyl-tRNA synthetase (MetRS) subfamily; This model characterizes the GST_C-like domain found in the N-terminal region of MetRS from higher eukaryotes. Aminoacyl-tRNA synthetases (aaRSs) comprise a family of enzymes that catalyze the coupling of amino acids with their matching tRNAs. This involves the formation of an aminoacyl adenylate using ATP, followed by the transfer of the activated amino acid to the 3'-adenosine moiety of the tRNA. AaRSs may also be involved in translational and transcriptional regulation, as well as in tRNA processing. MetRS is a class I aaRS, containing a Rossman fold catalytic core. It recognizes the initiator tRNA as well as the Met-tRNA for protein chain elongation. The GST_C-like domain of MetRS from higher eukaryotes is likely involved in protein-protein interactions, to mediate the formation of the multi-aaRS complex that acts as a molecular hub to coordinate protein synthesis. AaRSs from prokaryotes, which are active as dimers, do not contain this GST_C-like domain.
Pssm-ID: 198340 [Multi-domain] Cd Length: 102 Bit Score: 159.20 E-value: 7.89e-46
catalytic core domain of isoleucyl, leucyl, valyl and methioninyl tRNA synthetases; Catalytic ...
267-630
3.04e-34
catalytic core domain of isoleucyl, leucyl, valyl and methioninyl tRNA synthetases; Catalytic core domain of isoleucyl, leucyl, valyl and methioninyl tRNA synthetases. These class I enzymes are all monomers. However, in some species, MetRS functions as a homodimer, as a result of an additional C-terminal domain. These enzymes aminoacylate the 2'-OH of the nucleotide at the 3' of the appropriate tRNA. The core domain is based on the Rossman fold and is responsible for the ATP-dependent formation of the enzyme bound aminoacyl-adenylate. It contains the characteristic class I HIGH and KMSKS motifs, which are involved in ATP binding. Enzymes in this subfamily share an insertion in the core domain, which is subject to both deletions and rearrangements. This editing region hydrolyzes mischarged cognate tRNAs and thus prevents the incorporation of chemically similar amino acids. MetRS has a significantly shorter insertion, which lacks the editing function.
Pssm-ID: 185674 [Multi-domain] Cd Length: 312 Bit Score: 133.70 E-value: 3.04e-34
Glutathione S-transferase, N-terminal domain; This is the N-terminal (GST-N) domain containing ...
1-74
1.56e-28
Glutathione S-transferase, N-terminal domain; This is the N-terminal (GST-N) domain containing a thioredoxin fold. This domain found in methionyl-tRNA synthetase (MRS), a multi-tRNA synthetase complex (MSC) component.
Pssm-ID: 436537 Cd Length: 74 Bit Score: 109.02 E-value: 1.56e-28
MetRS_RNA binding domain. This short RNA-binding domain is found at the C-terminus of MetRS in ...
845-889
1.98e-19
MetRS_RNA binding domain. This short RNA-binding domain is found at the C-terminus of MetRS in several higher eukaryote aminoacyl-tRNA synthetases (aaRSs). It is repeated in Drosophila MetRS. This domain consists of a helix-turn-helix structure, which is similar to other RNA-binding proteins. It is involved in both protein-RNA interactions by binding tRNA and protein-protein interactions, which are important for the formation of aaRSs into multienzyme complexes.
Pssm-ID: 238475 [Multi-domain] Cd Length: 45 Bit Score: 82.13 E-value: 1.98e-19
A conserved domain of 46 amino acids, called WHEP-TRS has been shown.to exist in a number of ...
847-899
9.65e-17
A conserved domain of 46 amino acids, called WHEP-TRS has been shown.to exist in a number of higher eukaryote aminoacyl-transfer RNA synthetases; This domain is present one to six times in the several enzymes. There are three copies in mammalian multifunctional aminoacyl-tRNA synthetase in a region that separates the N-terminal glutamyl-tRNA synthetase domain from the C-terminal prolyl-tRNA synthetase domain, and six copies in the intercatalytic region of the Drosophila enzyme. The domain is found at the N-terminal extremity of the mammalian tryptophanyl- tRNA synthetase and histidyl-tRNA synthetase, and the mammalian, insect, nematode and plant glycyl- tRNA synthetases. This domain could contain a central alpha-helical region and may play a role in the association of tRNA-synthetases into multienzyme complexes.
Pssm-ID: 214960 [Multi-domain] Cd Length: 56 Bit Score: 74.69 E-value: 9.65e-17
Anticodon binding domain of methionyl tRNA ligase; This domain is found in methionyl tRNA ...
676-822
6.67e-16
Anticodon binding domain of methionyl tRNA ligase; This domain is found in methionyl tRNA ligase. The domain binds to the anticodon of the tRNA ligase.
Pssm-ID: 437135 [Multi-domain] Cd Length: 152 Bit Score: 75.62 E-value: 6.67e-16
EPRS-like_RNA binding domain. This short RNA-binding domain is found in several higher ...
846-887
1.71e-13
EPRS-like_RNA binding domain. This short RNA-binding domain is found in several higher eukaryote aminoacyl-tRNA synthetases (aaRSs). It is found in three copies in the mammalian bifunctional EPRS in a region that separates the N-terminal GluRS from the C-terminal ProRS. In the Drosophila EPRS, this domain is repeated six times. It is found at the N-terminus of TrpRS, HisRS and GlyR and at the C-terminus of MetRS. This domain consists of a helix- turn- helix structure, which is similar to other RNA-binding proteins. It is involved in both protein-RNA interactions by binding tRNA and protein-protein interactions, which are important for the formation of aaRSs into multienzyme complexes.
Pssm-ID: 238605 [Multi-domain] Cd Length: 42 Bit Score: 65.25 E-value: 1.71e-13
valyl-tRNA synthetase; The valyl-tRNA synthetase (ValS) is a class I amino acyl-tRNA ligase ...
451-785
3.10e-12
valyl-tRNA synthetase; The valyl-tRNA synthetase (ValS) is a class I amino acyl-tRNA ligase and is particularly closely related to the isoleucyl tRNA synthetase. [Protein synthesis, tRNA aminoacylation]
Pssm-ID: 273070 [Multi-domain] Cd Length: 861 Bit Score: 70.47 E-value: 3.10e-12
Glutathione S-transferase C-terminal-like, alpha helical domain of various Aminoacyl-tRNA ...
104-179
2.93e-11
Glutathione S-transferase C-terminal-like, alpha helical domain of various Aminoacyl-tRNA synthetases and similar domains; Glutathione S-transferase (GST) C-terminal domain family, Aminoacyl-tRNA synthetase (AaRS)-like subfamily; This model characterizes the GST_C-like domain found in the N-terminal region of some eukaryotic AaRSs, as well as similar domains found in proteins involved in protein synthesis including Aminoacyl tRNA synthetase complex-Interacting Multifunctional Protein 2 (AIMP2), AIMP3, and eukaryotic translation Elongation Factor 1 beta (eEF1b). AaRSs comprise a family of enzymes that catalyze the coupling of amino acids with their matching tRNAs. This involves the formation of an aminoacyl adenylate using ATP, followed by the transfer of the activated amino acid to the 3'-adenosine moiety of the tRNA. AaRSs may also be involved in translational and transcriptional regulation, as well as in tRNA processing. AaRSs in this subfamily include GluRS from lower eukaryotes, as well as GluProRS, MetRS, and CysRS from higher eukaryotes. AIMPs are non-enzymatic cofactors that play critical roles in the assembly and formation of a macromolecular multi-tRNA synthetase protein complex found in higher eukaryotes. The GST_C-like domain is involved in protein-protein interactions, mediating the formation of aaRS complexes such as the MetRS-Arc1p-GluRS ternary complex in lower eukaryotes and the multi-aaRS complex in higher eukaryotes, that act as molecular hubs for protein synthesis. AaRSs from prokaryotes, which are active as dimers, do not contain this GST_C-like domain.
Pssm-ID: 198322 [Multi-domain] Cd Length: 82 Bit Score: 60.02 E-value: 2.93e-11
WEPRS_RNA binding domain. This short RNA-binding domain is found in several higher eukaryote ...
845-891
2.20e-10
WEPRS_RNA binding domain. This short RNA-binding domain is found in several higher eukaryote aminoacyl-tRNA synthetases (aaRSs). It is found in multiple copies in eukaryotic bifunctional glutamyl-prolyl-tRNA synthetases (EPRS) in a region that separates the N-terminal glutamyl-tRNA synthetase (GluRS) from the C-terminal prolyl-tRNA synthetase (ProRS). It is also found at the N-terminus of vertebrate tryptophanyl-tRNA synthetases (TrpRS). This domain consists of a helix-turn-helix structure, which is similar to other RNA-binding proteins. It is involved in both protein-RNA interactions by binding tRNA and protein-protein interactions, which are important for the formation of aaRSs into multienzyme complexes.
Pssm-ID: 238473 [Multi-domain] Cd Length: 50 Bit Score: 56.47 E-value: 2.20e-10
catalytic core domain of valyl-tRNA synthetases; Valine amino-acyl tRNA synthetase (ValRS) catalytic core domain. This enzyme is a monomer which aminoacylates the 2'-OH of the nucleotide at the 3' of the appropriate tRNA. The core domain is based on the Rossman fold and is responsible for the ATP-dependent formation of the enzyme bound aminoacyl-adenylate. It contains the characteristic class I HIGH and KMSKS motifs, which are involved in ATP binding. ValRS has an insertion in the core domain, which is subject to both deletions and rearrangements. This editing region hydrolyzes mischarged cognate tRNAs and thus prevents the incorporation of chemically similar amino acids.
Pssm-ID: 185677 [Multi-domain] Cd Length: 382 Bit Score: 63.03 E-value: 3.14e-10
catalytic core domain of leucyl-tRNA synthetases; Leucyl tRNA synthetase (LeuRS) catalytic core domain. This class I enzyme is a monomer which aminoacylates the 2'-OH of the nucleotide at the 3' of the appropriate tRNA. The core domain is based on the Rossman fold and is responsible for the ATP-dependent formation of the enzyme bound aminoacyl-adenylate. It contains the characteristic class I HIGH and KMSKS motifs, which are involved in ATP binding. In Aquifex aeolicus, the gene encoding LeuRS is split in two, just before the KMSKS motif. Consequently, LeuRS is a heterodimer, which likely superimposes with the LeuRS monomer found in most other organisms. LeuRS has an insertion in the core domain, which is subject to both deletions and rearrangements and thus differs between prokaryotic LeuRS and archaeal/eukaryotic LeuRS. This editing region hydrolyzes mischarged cognate tRNAs and thus prevents the incorporation of chemically similar amino acids.
Pssm-ID: 173906 [Multi-domain] Cd Length: 314 Bit Score: 61.88 E-value: 4.49e-10
C-terminal, alpha helical domain of an unknown subfamily 2 of Glutathione S-transferases; ...
83-186
3.28e-09
C-terminal, alpha helical domain of an unknown subfamily 2 of Glutathione S-transferases; Glutathione S-transferase (GST) C-terminal domain family, unknown subfamily 2; composed of uncharacterized bacterial proteins, with similarity to GSTs. GSTs are cytosolic dimeric proteins involved in cellular detoxification by catalyzing the conjugation of glutathione (GSH) with a wide range of endogenous and xenobiotic alkylating agents, including carcinogens, therapeutic drugs, environmental toxins and products of oxidative stress. GSTs also show GSH peroxidase activity and are involved in the synthesis of prostaglandins and leukotrienes. The GST fold contains an N-terminal thioredoxin-fold domain and a C-terminal alpha helical domain, with an active site located in a cleft between the two domains. GSH binds to the N-terminal domain while the hydrophobic substrate occupies a pocket in the C-terminal domain.
Pssm-ID: 198289 [Multi-domain] Cd Length: 110 Bit Score: 55.36 E-value: 3.28e-09
HisRS_RNA binding domain. This short RNA-binding domain is found at the N-terminus of HisRS ...
844-883
7.24e-09
HisRS_RNA binding domain. This short RNA-binding domain is found at the N-terminus of HisRS in several higher eukaryote aminoacyl-tRNA synthetases (aaRSs). This domain consists of a helix- turn- helix structure, which is similar to other RNA-binding proteins. It is involved in both protein-RNA interactions by binding tRNA and protein-protein interactions, which are important for the formation of aaRSs into multienzyme complexes.
Pssm-ID: 238474 [Multi-domain] Cd Length: 45 Bit Score: 52.09 E-value: 7.24e-09
C-terminal, alpha helical domain of Ure2p and related Glutathione S-transferase-like proteins; ...
81-150
3.45e-06
C-terminal, alpha helical domain of Ure2p and related Glutathione S-transferase-like proteins; Glutathione S-transferase (GST) C-terminal domain family, Ure2p-like subfamily; composed of the Saccharomyces cerevisiae Ure2p, YfcG and YghU from Escherichia coli, and related GST-like proteins. Ure2p is a regulator for nitrogen catabolism in yeast. It represses the expression of several gene products involved in the use of poor nitrogen sources when rich sources are available. A transmissible conformational change of Ure2p results in a prion called [Ure3], an inactive, self-propagating and infectious amyloid. Ure2p displays a GST fold containing an N-terminal thioredoxin-fold domain and a C-terminal alpha helical domain. The N-terminal thioredoxin-fold domain is sufficient to induce the [Ure3] phenotype and is also called the prion domain of Ure2p. In addition to its role in nitrogen regulation, Ure2p confers protection to cells against heavy metal ion and oxidant toxicity, and shows glutathione (GSH) peroxidase activity. YfcG and YghU are two of the nine GST homologs in the genome of Escherichia coli. They display very low or no GSH transferase, but show very good disulfide bond oxidoreductase activity. YghU also shows modest organic hydroperoxide reductase activity. GSTs are cytosolic dimeric proteins involved in cellular detoxification by catalyzing the conjugation of GSH with a wide range of endogenous and xenobiotic alkylating agents, including carcinogens, therapeutic drugs, environmental toxins and products of oxidative stress. GSTs also show GSH peroxidase activity and are involved in the synthesis of prostaglandins and leukotrienes. The GST active site is located in a cleft between the N- and C-terminal domains. GSH binds to the N-terminal domain while the hydrophobic substrate occupies a pocket in the C-terminal domain.
Pssm-ID: 198288 [Multi-domain] Cd Length: 110 Bit Score: 46.47 E-value: 3.45e-06
C-terminal, alpha helical domain of the Glutathione S-transferase family; Glutathione ...
81-176
3.51e-06
C-terminal, alpha helical domain of the Glutathione S-transferase family; Glutathione S-transferase (GST) family, C-terminal alpha helical domain; a large, diverse group of cytosolic dimeric proteins involved in cellular detoxification by catalyzing the conjugation of glutathione (GSH) with a wide range of endogenous and xenobiotic alkylating agents, including carcinogens, therapeutic drugs, environmental toxins and products of oxidative stress. In addition, GSTs also show GSH peroxidase activity and are involved in the synthesis of prostaglandins and leukotrienes. This family, also referred to as soluble GSTs, is the largest family of GSH transferases and is only distantly related to the mitochondrial GSTs (GSTK). Soluble GSTs bear no structural similarity to microsomal GSTs (MAPEG family) and display additional activities unique to their group, such as catalyzing thiolysis, reduction and isomerization of certain compounds. The GST fold contains an N-terminal thioredoxin-fold domain and a C-terminal alpha helical domain, with an active site located in a cleft between the two domains. GSH binds to the N-terminal domain while the hydrophobic substrate occupies a pocket in the C-terminal domain. Based on sequence similarity, different classes of GSTs have been identified, which display varying tissue distribution, substrate specificities and additional specific activities. In humans, GSTs display polymorphisms which may influence individual susceptibility to diseases such as cancer, arthritis, allergy and sclerosis. Some GST family members with non-GST functions include glutaredoxin 2, the CLIC subfamily of anion channels, prion protein Ure2p, crystallins, metaxins, stringent starvation protein A, and aminoacyl-tRNA synthetases.
Pssm-ID: 198286 [Multi-domain] Cd Length: 100 Bit Score: 46.34 E-value: 3.51e-06
Glutathione S-transferase C-terminal-like, alpha helical domain of the Gamma subunit of ...
83-180
1.58e-05
Glutathione S-transferase C-terminal-like, alpha helical domain of the Gamma subunit of Elongation Factor 1B and similar proteins; Glutathione S-transferase (GST) C-terminal domain family, Gamma subunit of Elongation Factor 1B (EF1Bgamma) subfamily; EF1Bgamma is part of the eukaryotic translation elongation factor-1 (EF1) complex which plays a central role in the elongation cycle during protein biosynthesis. EF1 consists of two functionally distinct units, EF1A and EF1B. EF1A catalyzes the GTP-dependent binding of aminoacyl-tRNA to the ribosomal A site concomitant with the hydrolysis of GTP. The resulting inactive EF1A:GDP complex is recycled to the active GTP form by the guanine-nucleotide exchange factor EF1B, a complex composed of at least two subunits, alpha and gamma. Metazoan EFB1 contain a third subunit, beta. The EF1B gamma subunit contains a GST fold consisting of an N-terminal thioredoxin-fold domain and a C-terminal alpha helical domain. The GST-like domain of EF1Bgamma is believed to mediate the dimerization of the EF1 complex, which in yeast is a dimer of the heterotrimer EF1A:EF1Balpha:EF1Bgamma. In addition to its role in protein biosynthesis, EF1Bgamma may also display other functions. The recombinant rice protein has been shown to possess GSH conjugating activity. The yeast EF1Bgamma binds to membranes in a calcium dependent manner and is also part of a complex that binds to the msrA (methionine sulfoxide reductase) promoter suggesting a function in the regulation of its gene expression. Also included in this subfamily is the GST_C-like domain at the N-terminus of human valyl-tRNA synthetase (ValRS) and its homologs. Metazoan ValRS forms a stable complex with Elongation Factor-1H (EF-1H), and together, they catalyze consecutive steps in protein biosynthesis, tRNA aminoacylation and its transfer to EF.
Pssm-ID: 198290 [Multi-domain] Cd Length: 123 Bit Score: 45.24 E-value: 1.58e-05
Glutathione S-transferase, C-terminal domain; GST conjugates reduced glutathione to a variety ...
111-180
4.39e-05
Glutathione S-transferase, C-terminal domain; GST conjugates reduced glutathione to a variety of targets including S-crystallin from squid, the eukaryotic elongation factor 1-gamma, the HSP26 family of stress-related proteins and auxin-regulated proteins in plants. Stringent starvation proteins in E. coli are also included in the alignment but are not known to have GST activity. The glutathione molecule binds in a cleft between N and C-terminal domains. The catalytically important residues are proposed to reside in the N-terminal domain. In plants, GSTs are encoded by a large gene family (48 GST genes in Arabidopsis) and can be divided into the phi, tau, theta, zeta, and lambda classes.
Pssm-ID: 459647 [Multi-domain] Cd Length: 93 Bit Score: 43.04 E-value: 4.39e-05
C-terminal, alpha helical domain of GTT2-like Glutathione S-transferases; Glutathione ...
116-177
1.07e-03
C-terminal, alpha helical domain of GTT2-like Glutathione S-transferases; Glutathione S-transferase (GST) C-terminal domain family, Saccharomyces cerevisiae GTT2-like subfamily; composed of predominantly uncharacterized proteins with similarity to the Saccharomyces cerevisiae GST protein, GTT2. GSTs are cytosolic dimeric proteins involved in cellular detoxification by catalyzing the conjugation of glutathione (GSH) with a wide range of endogenous and xenobiotic alkylating agents, including carcinogens, therapeutic drugs, environmental toxins, and products of oxidative stress. GSTs also show GSH peroxidase activity and are involved in the synthesis of prostaglandins and leukotrienes. The GST fold contains an N-terminal thioredoxin-fold domain and a C-terminal alpha helical domain, with an active site located in a cleft between the two domains. GSH binds to the N-terminal domain while the hydrophobic substrate occupies a pocket in the C-terminal domain. GTT2, a homodimer, exhibits GST activity with standard substrates. Strains with deleted GTT2 genes are viable but exhibit increased sensitivity to heat shock.
Pssm-ID: 198291 [Multi-domain] Cd Length: 116 Bit Score: 39.61 E-value: 1.07e-03
Glutathione S-transferase C-terminal-like, alpha helical domain of vertebrate Valyl-tRNA ...
77-179
1.48e-03
Glutathione S-transferase C-terminal-like, alpha helical domain of vertebrate Valyl-tRNA synthetase; Glutathione S-transferase (GST) C-terminal domain family, Valyl-tRNA synthetase (ValRS) subfamily; This model characterizes the GST_C-like domain found in the N-terminal region of human ValRS and its homologs from other vertebrates such as frog and zebrafish. Aminoacyl-tRNA synthetases (aaRSs) comprise a family of enzymes that catalyze the coupling of amino acids with their matching tRNAs. This involves the formation of an aminoacyl adenylate using ATP, followed by the transfer of the activated amino acid to the 3'-adenosine moiety of the tRNA. AaRSs may also be involved in translational and transcriptional regulation, as well as in tRNA processing. They typically form large stable complexes with other proteins. ValRS forms a stable complex with Elongation Factor-1H (EF-1H), and together, they catalyze consecutive steps in protein biosynthesis, tRNA aminoacylation and its transfer to EF. The GST_C-like domain of ValRS from higher eukaryotes is likely involved in protein-protein interactions, to mediate the formation of the multi-aaRS complex that acts as a molecular hub to coordinate protein synthesis. ValRSs from prokaryotes and lower eukaryotes, such as fungi and plants, do not appear to contain this GST_C-like domain.
Pssm-ID: 198327 [Multi-domain] Cd Length: 123 Bit Score: 39.44 E-value: 1.48e-03
C-terminal, alpha helical domain of Class Beta Glutathione S-transferases; Glutathione ...
83-174
2.57e-03
C-terminal, alpha helical domain of Class Beta Glutathione S-transferases; Glutathione S-transferase (GST) C-terminal domain family, Class Beta subfamily; GSTs are cytosolic dimeric proteins involved in cellular detoxification by catalyzing the conjugation of glutathione (GSH) with a wide range of endogenous and xenobiotic alkylating agents, including carcinogens, therapeutic drugs, environmental toxins, and products of oxidative stress. The GST fold contains an N-terminal thioredoxin-fold domain and a C-terminal alpha helical domain, with an active site located in a cleft between the two domains. GSH binds to the N-terminal domain while the hydrophobic substrate occupies a pocket in the C-terminal domain. Unlike mammalian GSTs which detoxify a broad range of compounds, the bacterial class Beta GSTs exhibit GSH conjugating activity with a narrow range of substrates. In addition to GSH conjugation, they are involved in the protection against oxidative stress and are able to bind antibiotics and reduce the antimicrobial activity of beta-lactam drugs, contributing to antibiotic resistance. The structure of the Proteus mirabilis enzyme reveals that the cysteine in the active site forms a covalent bond with GSH. One member of this subfamily is a GST from Burkholderia xenovorans LB400 that is encoded by the bphK gene and is part of the biphenyl catabolic pathway.
Pssm-ID: 198297 [Multi-domain] Cd Length: 113 Bit Score: 38.38 E-value: 2.57e-03
catalytic core domain of class I amino acyl-tRNA synthetase; Class I amino acyl-tRNA ...
273-336
3.54e-03
catalytic core domain of class I amino acyl-tRNA synthetase; Class I amino acyl-tRNA synthetase (aaRS) catalytic core domain. These enzymes are mostly monomers which aminoacylate the 2'-OH of the nucleotide at the 3' of the appropriate tRNA. The core domain is based on the Rossman fold and is responsible for the ATP-dependent formation of the enzyme bound aminoacyl-adenylate. It contains the characteristic class I HIGH and KMSKS motifs, which are involved in ATP binding.
Pssm-ID: 173901 [Multi-domain] Cd Length: 143 Bit Score: 38.61 E-value: 3.54e-03
GST_N family, unknown subfamily 3; composed of uncharacterized bacterial proteins with ...
27-68
5.38e-03
GST_N family, unknown subfamily 3; composed of uncharacterized bacterial proteins with similarity to GSTs. GSTs are cytosolic dimeric proteins involved in cellular detoxification by catalyzing the conjugation of glutathione (GSH) with a wide range of endogenous and xenobiotic alkylating agents, including carcinogens, therapeutic drugs, environmental toxins and products of oxidative stress. GSTs also show GSH peroxidase activity and are involved in the synthesis of prostaglandins and leukotrienes. The GST fold contains an N-terminal TRX-fold domain and a C-terminal alpha helical domain, with an active site located in a cleft between the two domains.
Pssm-ID: 239347 [Multi-domain] Cd Length: 73 Bit Score: 36.47 E-value: 5.38e-03
C-terminal, alpha helical domain of an unknown subfamily 8 of Glutathione S-transferases; ...
83-164
6.21e-03
C-terminal, alpha helical domain of an unknown subfamily 8 of Glutathione S-transferases; Glutathione S-transferase (GST) C-terminal domain family, unknown subfamily 8; composed of Agrobacterium tumefaciens GST and other uncharacterized bacterial proteins with similarity to GSTs. GSTs are cytosolic dimeric proteins involved in cellular detoxification by catalyzing the conjugation of glutathione (GSH) with a wide range of endogenous and xenobiotic alkylating agents, including carcinogens, therapeutic drugs, environmental toxins, and products of oxidative stress. GSTs also show GSH peroxidase activity and are involved in the synthesis of prostaglandins and leukotrienes. The GST fold contains an N-terminal thioredoxin-fold domain and a C-terminal alpha helical domain, with an active site located in a cleft between the two domains. GSH binds to the N-terminal domain while the hydrophobic substrate occupies a pocket in the C-terminal domain. The three-dimensional structure of Agrobacterium tumefaciens GST has been determined but there is no information on its functional characterization.
Pssm-ID: 198316 [Multi-domain] Cd Length: 101 Bit Score: 37.27 E-value: 6.21e-03
Database: CDSEARCH/cdd Low complexity filter: no Composition Based Adjustment: yes E-value threshold: 0.01
References:
Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
of the residues that compose this conserved feature have been mapped to the query sequence.
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(labeled illustration) Standard Display shows only the best scoring domain model from each source, in each hit category listed below for each region on the query sequence.
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