pfam04928: PAP_central (this model, PSSM-Id:282745 is obsolete and has been replaced by 461486)
Poly(A) polymerase central domain
The central domain of Poly(A) polymerase shares structural similarity with the allosteric activity domain of ribonucleotide reductase R1, which comprises a four-helix bundle and a three-stranded mixed beta- sheet. Even though the two enzymes bind ATP, the ATP-recognition motifs are different.