Evidence map›Paper›PMID 21163356›Full record

ArticleJournal of structural biology2011

Binding of the N-terminal fragment C0-C2 of cardiac MyBP-C to cardiac F-actin.

Robert W Kensler, Justin F Shaffer, Samantha P Harris

Abstract read
In one paragraph

Article in Journal of structural biology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 59 papers.

0numbers the graph read from it
0cells of the map it votes in
59citing papers in PubMed
5.3field-weighted citation impact, top 4% 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

59 citing papers in PubMed, 86 citations in OpenAlex.

  1. CaJournal of molecular and cellular cardiology · 2025
    Article
  2. Autoinhibition of cMyBP-C by its middle domains.Journal of molecular and cellular cardiology · 2025
    Article
  3. Review
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Myosin Binding Protein-C Forms Amyloid-Like Aggregates In Vitro.International journal of molecular sciences · 2021
    Article
  12. Article
  13. Review
  14. Article
  15. MyBP-C: one protein to govern them all.Journal of muscle research and cell motility · 2020
    Review
  16. Article
  17. Article
  18. Review
  19. Revealing the mechanism of how cardiac myosin-binding protein C N-terminal fragments sensitize thin filaments for myosin binding.Proceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  20. Hypertrophic cardiomyopathy mutations inScience translational medicine · 2019
    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 2 countries.

Robert W KenslerDepartment of Anatomy, University of Puerto Rico, San Juan, PR, USA. robert.kensler@upr.edu
Justin F Shaffer
Samantha P Harris
University of California, Davis · USUniversity of Puerto Rico System · PR

Funding

Role of Myosin Binding Protein-C in the Regulation of Myocardial ContractionR01HL080367 · NHLBI · UNIVERSITY OF WASHINGTON · PI Samantha P Harris · 2005 to 2026
$7.5M
Cardiac Muscle: Functional Role of Myosin - Binding Protein C in ContractionSC1HL096017 · NHLBI · UNIVERSITY OF PUERTO RICO MED SCIENCES · PI KENSLER, ROBERT W. · 2008 to 2011
$750k
NHLBI NIH HHS R01 HL080367NHLBI NIH HHS SC1 HL096017
6 · The paper itself

Abstract

Cardiac myosin-binding protein C (cMyBP-C), a major accessory protein of cardiac thick filaments, is thought to play a key role in the regulation of myocardial contraction. Although current models for the function of the protein focus on its binding to myosin S2, other evidence suggests that it may also bind to F-actin. We have previously shown that the N-terminal fragment C0-C2 of cardiac myosin-binding protein-C (cMyBP-C) bundles actin, providing evidence for interaction of cMyBP-C and actin. In this paper we directly examined the interaction between C0-C2 and F-actin at physiological ionic strength and pH by negative staining and electron microscopy. We incubated C0-C2 (5-30μM, in a buffer containing in mM: 180 KCl, 1 MgCl(2), 1 EDTA, 1 DTT, 20 imidazole, at pH 7.4) with F-actin (5μM) for 30min and examined negatively-stained samples of the solution by electron microscopy (EM). Examination of EM images revealed that C0-C2 bound to F-actin to form long helically-ordered complexes. Fourier transforms indicated that C0-C2 binds with the helical periodicity of actin with strong 1st and 6th layer lines. The results provide direct evidence that the N-terminus of cMyBP-C can bind to F-actin in a periodic complex. This interaction of cMyBP-C with F-actin supports the possibility that binding of cMyBP-C to F-actin may play a role in the regulation of cardiac contraction.

Indexed as

ActinsAnimalsCarrier ProteinsCattleMiceMicroscopy, Electron, ScanningMyosin Binding Protein CProtein BindingActinsCarrier ProteinsMyosin Binding Protein C

Identifiers

PMID21163356
PMCPMC3056911
OpenAlexW2073416642

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.