CATH Classification

Domain Context

CATH Clusters

Superfamily DNA polymerase, Y-family, little finger domain
Functional Family Polymerase (DNA directed) iota

Enzyme Information

2.7.7.7
DNA-directed DNA polymerase.
based on mapping to UniProt Q9UNA4
Deoxynucleoside triphosphate + DNA(n) = diphosphate + DNA(n+1).
-!- Catalyzes DNA-template-directed extension of the 3'-end of a DNA strand by one nucleotide at a time. -!- Cannot initiate a chain de novo. -!- Requires a primer which may be DNA or RNA. -!- See also EC 2.7.7.49.

UniProtKB Entries (1)

Q9UNA4
POLI_HUMAN
Homo sapiens
DNA polymerase iota

PDB Structure

PDB 1T3N
External Links
Method X-RAY DIFFRACTION
Organism Saccharomyces
Primary Citation
Replication by human DNA polymerase-iota occurs by Hoogsteen base-pairing.
Nair, D.T., Johnson, R.E., Prakash, S., Prakash, L., Aggarwal, A.K.
Nature