UniProt functional annotation for Q97Z84

UniProt code: Q97Z84.

Organism: Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2) (Sulfolobus solfataricus).
Taxonomy: Archaea; Crenarchaeota; Thermoprotei; Sulfolobales; Sulfolobaceae; Saccharolobus.
 
Function: One of the sliding clamp subunits that acts as a moving platform for DNA processing. Responsible for tethering the catalytic subunit of DNA polymerase to DNA during high-speed replication. Heterotrimer stimulates the Holliday junction resolvase Hjc. DNA polymerase I, DNA ligase and the flap endonuclease may be constitutively associated with the PCNA heterotrimer forming a scanning complex able to couple DNA synthesis and Okazaki fragment maturation. {ECO:0000269|PubMed:17011573}.
 
Subunit: Forms homodimers with PCNA1, which then recruit PCNA3; does not form homotrimers (PubMed:12535540, PubMed:18703842). The heterodimers interact with RfcS homotetramers (PubMed:12535540). Heterotrimer which circularizes head-to-tail (head is at N-terminus, tail is at C-terminus) to form a toroid; DNA passes through its center. Replication factor C (RFC) is required to load the toroid on the DNA. This subunit interacts with DNA polymerase I (dpo1) (PubMed:12535540). The heterotrimer also interacts with flap endonuclease 1, DNA ligase and XPF via the other subunits. {ECO:0000269|PubMed:12535540, ECO:0000269|PubMed:12675797, ECO:0000269|PubMed:16945955, ECO:0000269|PubMed:17011573, ECO:0000269|PubMed:17012780, ECO:0000269|PubMed:17052461, ECO:0000269|PubMed:18703842, ECO:0000269|PubMed:19054331}.
Similarity: Belongs to the PCNA family. {ECO:0000255|HAMAP- Rule:MF_00317}.
Sequence caution: Sequence=AAK41309.1; Type=Erroneous initiation; Note=Extended N-terminus.; Evidence={ECO:0000305};

Annotations taken from UniProtKB at the EBI.