UniProtKB - P57765 (PCNA3_SULSO)
Protein
DNA polymerase sliding clamp 3
Gene
pcn3
Organism
Sulfolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2)
Status
Functioni
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. 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. Heterotrimer stimulates the Holliday junction resolvase Hjc.2 Publications
GO - Molecular functioni
- DNA binding Source: UniProtKB-KW
- DNA polymerase processivity factor activity Source: GO_Central
GO - Biological processi
- leading strand elongation Source: GO_Central
- regulation of DNA replication Source: InterPro
Keywordsi
| Molecular function | DNA-binding |
| Biological process | DNA replication |
Names & Taxonomyi
| Protein namesi | Recommended name: DNA polymerase sliding clamp 3UniRule annotationAlternative name(s): Proliferating cell nuclear antigen homolog 3UniRule annotation Short name: PCNA3UniRule annotation |
| Gene namesi | Name:pcn3UniRule annotation Synonyms:pcnA-1 Ordered Locus Names:SSO0405 ORF Names:C41_016 |
| Organismi | Sulfolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2) |
| Taxonomic identifieri | 273057 [NCBI] |
| Taxonomic lineagei | Archaea › Crenarchaeota › Thermoprotei › Sulfolobales › Sulfolobaceae › Sulfolobus › |
| Proteomesi |
|
PTM / Processingi
Molecule processing
| Feature key | Position(s) | DescriptionActions | Graphical view | Length |
|---|---|---|---|---|
| ChainiPRO_0000149214 | 1 – 244 | DNA polymerase sliding clamp 3Add BLAST | 244 |
Interactioni
Subunit structurei
Does not individually interact with either of the other PCNA subunits, but is recruited to a PCNA1-PCNA2 heterodimer; does not form homotrimers (PubMed:12535540, PubMed:18703842). 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 ligase, RfcL, XPF, and weakly with DNA polymerase I (PubMed:12535540).8 Publications
Protein-protein interaction databases
| STRINGi | 273057.SSO0405 |
Structurei
Secondary structure
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details3D structure databases
| ProteinModelPortali | P57765 |
| SMRi | P57765 |
| ModBasei | Search... |
| MobiDBi | Search... |
Miscellaneous databases
| EvolutionaryTracei | P57765 |
Family & Domainsi
Sequence similaritiesi
Belongs to the PCNA family.UniRule annotation
Phylogenomic databases
| eggNOGi | arCOG00488 Archaea COG0592 LUCA |
| HOGENOMi | HOG000222371 |
| InParanoidi | P57765 |
| KOi | K04802 |
| OMAi | SDGFDKY |
| OrthoDBi | POG093Z0814 |
Family and domain databases
| HAMAPi | MF_00317 DNApol_clamp_arch, 1 hit |
| InterProi | View protein in InterPro IPR000730 Pr_cel_nuc_antig IPR022649 Pr_cel_nuc_antig_C IPR022659 Pr_cel_nuc_antig_CS IPR022648 Pr_cel_nuc_antig_N |
| PANTHERi | PTHR11352:SF0 PTHR11352:SF0, 1 hit |
| Pfami | View protein in Pfam PF02747 PCNA_C, 1 hit PF00705 PCNA_N, 1 hit |
| PRINTSi | PR00339 PCNACYCLIN |
| TIGRFAMsi | TIGR00590 pcna, 1 hit |
| PROSITEi | View protein in PROSITE PS01251 PCNA_1, 1 hit |
Sequencei
Sequence statusi: Complete.
P57765-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MKVVYDDVRV LKDIIQALAR LVDEAVLKFK QDSVELVALD RAHISLISVN
60 70 80 90 100
LPREMFKEYD VNDEFKFGFN TQYLMKILKV AKRKEAIEIA SESPDSVIIN
110 120 130 140 150
IIGSTNREFN VRNLEVSEQE IPEINLQFDI SATISSDGFK SAISEVSTVT
160 170 180 190 200
DNVVVEGHED RILIKAEGES EVEVEFSKDT GGLQDLEFSK ESKNSYSAEY
210 220 230 240
LDDVLSLTKL SDYVKISFGN QKPLQLFFNM EGGGKVTYLL APKV
Sequence cautioni
The sequence AAK40734 differs from that shown. Reason: Erroneous initiation. Translation N-terminally shortened.Curated
Sequence databases
| Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AE006641 Genomic DNA Translation: AAK40734.1 Different initiation. |
| PIRi | G90184 |
Genome annotation databases
| EnsemblBacteriai | AAK40734; AAK40734; SSO0405 |
| KEGGi | sso:SSO0405 |
| PATRICi | fig|273057.12.peg.401 |
Similar proteinsi
Entry informationi
| Entry namei | PCNA3_SULSO | |
| Accessioni | P57765Primary (citable) accession number: P57765 | |
| Entry historyi | Integrated into UniProtKB/Swiss-Prot: | February 21, 2001 |
| Last sequence update: | February 21, 2001 | |
| Last modified: | March 28, 2018 | |
| This is version 109 of the entry and version 1 of the sequence. See complete history. | ||
| Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
| Annotation program | Prokaryotic Protein Annotation Program | |



