Evidence map›Paper›PMID 22197374›Full record

ArticleJournal of molecular biology2012

A central swivel point in the RFC clamp loader controls PCNA opening and loading on DNA.

Miho Sakato, Mike O'Donnell, Manju M Hingorani

Abstract read
In one paragraph

Article in Journal of molecular biology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
1.2field-weighted citation impact, top 23% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

32 citing papers in PubMed, 50 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. PCNA is a nucleotide exchange factor for the clamp loader ATPase complex.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  5. Structure of the human CTF18-RFC clamp loader bound to PCNA.bioRxiv : the preprint server for biology · 2025
    Article
  6. PCNA is a Nucleotide Exchange Factor for the Clamp Loader ATPase Complex.bioRxiv : the preprint server for biology · 2025
    Article
  7. Article
  8. Cryo-EM reveals a nearly complete PCNA loading process and unique features of the human alternative clamp loader CTF18-RFC.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Structure of the human clamp loader reveals an autoinhibited conformation of a substrate-bound AAA+ switch.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  19. Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 2 institutions in 1 country.

Miho SakatoDepartment of Molecular Biology and Biochemistry, Wesleyan University, Middletown, CT 06459, USA.
Mike O'Donnell
Manju M Hingorani
Wesleyan University · USHoward Hughes Medical Institute · US

Funding

BIOCHEMICAL MECHANISM OF DNA POLYMERASE III HOLOENZYMER01GM038839 · NIGMS · WEILL MEDICAL COLLEGE OF CORNELL UNIV · PI O'DONNELL, MICHAEL E · 1988 to 2014
$2.9M
BIOCHEMICAL MECHANISM OF DNA POLYMERASE III HOLOENZYMER37GM038839 · NIGMS · ROCKEFELLER UNIVERSITY · PI O'DONNELL, MICHAEL E · 1997 to 2006
$2.2M
PCNA clamp mechanisms in DNA replication and repairR15GM094047 · NIGMS · WESLEYAN UNIVERSITY · PI HINGORANI, MANJU M · 2010 to 2010
$498k
NIGMS NIH HHS GM 38839NIGMS NIH HHS R01 GM038839NIGMS NIH HHS R15 GM094047NIGMS NIH HHS R37 GM038839
6 · The paper itself

Abstract

Replication factor C (RFC) is a five-subunit complex that loads proliferating cell nuclear antigen (PCNA) clamps onto primer-template DNA (ptDNA) during replication. RFC subunits belong to the AAA(+) superfamily, and their ATPase activity drives interactions between the clamp loader, the clamp, and the ptDNA, leading to topologically linked PCNA·ptDNA. We report the kinetics of transient events in Saccharomyces cerevisiae RFC-catalyzed PCNA loading, including ATP-induced RFC activation, PCNA opening, ptDNA binding, ATP hydrolysis, PCNA closing, and PCNA·ptDNA release. This detailed perspective enables assessment of individual RFC-A, RFC-B, RFC-C, RFC-D, and RFC-E subunit functions in the reaction mechanism. Functions have been ascribed to RFC subunits previously based on a steady-state analysis of 'arginine-finger' ATPase mutants; however, pre-steady-state analysis provides a different view. The central subunit RFC-C serves as a critical swivel point in the clamp loader. ATP binding to this subunit initiates RFC activation, and the clamp loader adopts a spiral conformation that stabilizes PCNA in a corresponding open spiral. The importance of RFC subunit response to ATP binding decreases as RFC-C>RFC-D>RFC-B, with RFC-A being unnecessary. RFC-C-dependent activation of RFC also enables ptDNA binding, leading to the formation of the RFC·ATP·PCNA(open)·ptDNA complex. Subsequent ATP hydrolysis leads to complex dissociation, with RFC-D activity contributing the most to rapid ptDNA release. The pivotal role of the RFC-B/C/D subunit ATPase core in clamp loading is consistent with the similar central location of all three ATPase active subunits of the Escherichia coli clamp loader.

Indexed as

DNA ReplicationAdenosine TriphosphatasesAdenosine TriphosphateDNA, FungalHydrolysisKineticsModels, MolecularMutationProliferating Cell Nuclear AntigenProtein ConformationProtein SubunitsReplication Protein CSaccharomyces cerevisiaeSaccharomyces cerevisiae ProteinsAdenosine TriphosphatasesAdenosine TriphosphateDNA, FungalProliferating Cell Nuclear AntigenProtein SubunitsReplication Protein CSaccharomyces cerevisiae Proteins

Identifiers

PMID22197374
PMCPMC3269524
OpenAlexW1970014123

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.