CATH Classification

Domain Context

CATH Clusters

Superfamily 3.30.70.330
Functional Family speckle targeted PIP5K1A-regulated poly(A) polymerase

Enzyme Information

2.7.7.19
Polynucleotide adenylyltransferase.
based on mapping to UniProt Q9H6E5
ATP + RNA(n) = diphosphate + RNA(n+1).
-!- Also acts slowly with CTP. -!- Catalyzes template-independent extension of the 3'-end of a DNA strand by one nucleotide at a time. -!- Cannot initiate a chain de novo. -!- The primer, depending on the source of the enzyme, may be an RNA or DNA fragment or oligo(A) bearing a 3'-OH terminal group. -!- See also EC 2.7.7.6.
2.7.7.52
RNA uridylyltransferase.
based on mapping to UniProt Q9H6E5
UTP + RNA(n) = diphosphate + RNA(n+1).
-!- Requires an oligoribonucleotide or polyribonucleotide with a free terminal 3'-OH as a primer.

UniProtKB Entries (1)

Q9H6E5
STPAP_HUMAN
Homo sapiens
Speckle targeted PIP5K1A-regulated poly(A) polymerase

PDB Structure

PDB 5WU6
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
Crystal structures of U6 snRNA-specific terminal uridylyltransferase
Yamashita, S., Takagi, Y., Nagaike, T., Tomita, K.
Nat Commun
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