Ctf18 / RFC2-5 / PCNA / DNA BINDING PROTEIN-DNA complex
Function / homology
Function and homology information
positive regulation of DNA metabolic process / Rad17 RFC-like complex / Mismatch repair (MMR) directed by MSH2:MSH6 (MutSalpha) / Gap-filling DNA repair synthesis and ligation in GG-NER / meiotic mismatch repair / Processive synthesis on the lagging strand / Elg1 RFC-like complex / Removal of the Flap Intermediate / DNA replication factor C complex / telomere tethering at nuclear periphery ...positive regulation of DNA metabolic process / Rad17 RFC-like complex / Mismatch repair (MMR) directed by MSH2:MSH6 (MutSalpha) / Gap-filling DNA repair synthesis and ligation in GG-NER / meiotic mismatch repair / Processive synthesis on the lagging strand / Elg1 RFC-like complex / Removal of the Flap Intermediate / DNA replication factor C complex / telomere tethering at nuclear periphery / Ctf18 RFC-like complex / Polymerase switching / E3 ubiquitin ligases ubiquitinate target proteins / maintenance of DNA trinucleotide repeats / SUMOylation of DNA replication proteins / Translesion synthesis by REV1 / Translesion synthesis by POLK / Translesion synthesis by POLI / Translesion Synthesis by POLH / DNA replication checkpoint signaling / establishment of mitotic sister chromatid cohesion / Termination of translesion DNA synthesis / Activation of ATR in response to replication stress / PCNA complex / lagging strand elongation / DNA damage tolerance / silent mating-type cassette heterochromatin formation / sister chromatid cohesion / mitotic sister chromatid cohesion / error-free translesion synthesis / DNA polymerase processivity factor activity / leading strand elongation / Gap-filling DNA repair synthesis and ligation in TC-NER / nuclear replication fork / Dual incision in TC-NER / DNA replication initiation / translesion synthesis / subtelomeric heterochromatin formation / mismatch repair / positive regulation of DNA repair / DNA damage checkpoint signaling / replication fork / positive regulation of DNA replication / double-strand break repair via homologous recombination / nucleotide-excision repair / DNA-templated DNA replication / mitotic cell cycle / chromosome, telomeric region / DNA repair / ATP hydrolysis activity / mitochondrion / DNA binding / ATP binding / identical protein binding / nucleus / cytosol Similarity search - Function
RFC1-like, AAA+ ATPase lid domain / Replication factor C subunit 3, C-terminal domain / RCF1/5-like, AAA+ ATPase lid domain / Replication factor C, C-terminal / Replication factor C C-terminal domain / : / DNA polymerase III, delta subunit / : / DNA polymerase III, clamp loader complex, gamma/delta/delta subunit, C-terminal / Proliferating cell nuclear antigen signature 2. ...RFC1-like, AAA+ ATPase lid domain / Replication factor C subunit 3, C-terminal domain / RCF1/5-like, AAA+ ATPase lid domain / Replication factor C, C-terminal / Replication factor C C-terminal domain / : / DNA polymerase III, delta subunit / : / DNA polymerase III, clamp loader complex, gamma/delta/delta subunit, C-terminal / Proliferating cell nuclear antigen signature 2. / Proliferating cell nuclear antigen, PCNA, conserved site / Proliferating cell nuclear antigen signature 1. / Proliferating cell nuclear antigen, PCNA / Proliferating cell nuclear antigen, PCNA, N-terminal / Proliferating cell nuclear antigen, PCNA, C-terminal / Proliferating cell nuclear antigen, N-terminal domain / Proliferating cell nuclear antigen, C-terminal domain / : / ATPase family associated with various cellular activities (AAA) / ATPase, AAA-type, core / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase Similarity search - Domain/homology
Proliferating cell nuclear antigen / Replication factor C subunit 5 / Replication factor C subunit 3 / Replication factor C subunit 4 / Replication factor C subunit 2 / Chromosome transmission fidelity protein 18 Similarity search - Component
Biological species
Saccharomyces cerevisiae (brewer's yeast)
Method
single particle reconstruction / cryo EM / Resolution: 3.5 Å
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
GM131754
United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
GM115809
United States
Howard Hughes Medical Institute (HHMI)
M.E.O.
United States
Citation
Journal: Science / Year: 2024 Title: Mechanism of PCNA loading by Ctf18-RFC for leading-strand DNA synthesis. Authors: Zuanning Yuan / Roxana Georgescu / Nina Y Yao / Olga Yurieva / Michael E O'Donnell / Huilin Li / Abstract: The proliferating cell nuclear antigen (PCNA) clamp encircles DNA to hold DNA polymerases (Pols) to DNA for processivity. The Ctf18-RFC PCNA loader, a replication factor C (RFC) variant, is specific ...The proliferating cell nuclear antigen (PCNA) clamp encircles DNA to hold DNA polymerases (Pols) to DNA for processivity. The Ctf18-RFC PCNA loader, a replication factor C (RFC) variant, is specific to the leading-strand Pol (Polε). We reveal here the underlying mechanism of Ctf18-RFC specificity to Polε using cryo-electron microscopy and biochemical studies. We found that both Ctf18-RFC and Polε contain specific structural features that direct PCNA loading onto DNA. Unlike other clamp loaders, Ctf18-RFC has a disordered ATPase associated with a diverse cellular activities (AAA+) motor that requires Polε to bind and stabilize it for efficient PCNA loading. In addition, Ctf18-RFC can pry prebound Polε off of DNA, then load PCNA onto DNA and transfer the PCNA-DNA back to Polε. These elements in both Ctf18-RFC and Polε provide specificity in loading PCNA onto DNA for Polε.
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