DNA polymerase processivity factor (IPR004190)

Short name: DNA_pol_proc_fac

Overlapping homologous superfamilies


Domain relationships



The DNA polymerase processivity factor is a replisome sliding clamp subunit, which is responsible for tethering the catalytic subunit of DNA polymerase to the DNA during high speed replication. The crystal structure of the Bacteriophage RB69 sliding clamp has been solved. It has shown that the peptide binds to the sliding clamp at the same position as that of a replication inhibitor peptide bound to PCNA. This suggests that the replication inhibitor protein p21CIP1 competes with eukaryotic polymerases for the same binding pocket on the clamp [PMID: 10535734].

GO terms

Biological Process

GO:0006260 DNA replication

Molecular Function

No terms assigned in this category.

Cellular Component

No terms assigned in this category.

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.