Evidence map›Paper›PMID 20560001›Full record

ReviewJournal of cardiovascular translational research2009

Insights into human beta-cardiac myosin function from single molecule and single cell studies.

Sivaraj Sivaramakrishnan, Euan Ashley, Leslie Leinwand, James A Spudich

Erratum issuedOpen access · greenAbstract readReview
In one paragraph

Review in Journal of cardiovascular translational research, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.1field-weighted citation impact, top 19% 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

20 citing papers in PubMed, 30 citations in OpenAlex.

  1. Understanding hypertrophic cardiomyopathy and its regulation by myosin drugs.Protein science : a publication of the Protein Society · 2025
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4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

Sivaraj SivaramakrishnanDepartment of Biochemistry, Stanford University, Stanford, CA, USA.
Euan Ashley
Leslie Leinwand
James A Spudich
Stanford University · USUniversity of Colorado System · US

Funding

MYOSIN MOVEMENT IN VITRO: MOLECULAR CHARACTERIZATIONR01GM033289 · NIGMS · STANFORD UNIVERSITY · PI SPUDICH, JAMES · 1985 to 2024
$13.6M
Mediators of Cardiac AdaptationR01HL050560 · NHLBI · YESHIVA UNIVERSITY · PI LEINWAND, LESLIE ANNE · 1993 to 2011
$4.0M
IN VIVO MODELS OF CARDIAC GENE REGULATIONR37HL050560 · NHLBI · YESHIVA UNIVERSITY · PI LEINWAND, LESLIE ANNE · 1993 to 2002
$1.3M
NHLBI NIH HHS HL050560NIGMS NIH HHS R01 GM033289
6 · The paper itself

Abstract

beta-Cardiac myosin is a mechanoenzyme that converts the energy from ATP hydrolysis into a mechanical force that drives contractility in muscle. Thirty percent of the point mutations that result in hypertrophic cardiomyopathy are localized to MYH7, the gene encoding human beta-cardiac myosin heavy chain (beta-MyHC). Force generation by myosins requires a tight and highly conserved allosteric coupling between its different protein domains. Hence, the effects of single point mutations on the force generation and kinetics of beta-cardiac myosin molecules cannot be predicted directly from their location within the protein structure. Great insight would be gained from understanding the link between the functional defect in the myosin protein and the clinical phenotypes of patients expressing them. Over the last decade, several single molecule techniques have been developed to understand in detail the chemomechanical cycle of different myosins. In this review, we highlight the single molecule techniques that can be used to assess the effect of point mutations on beta-cardiac myosin function. Recent bioengineering advances have enabled the micromanipulation of single cardiomyocyte cells to characterize their force-length dynamics. Here, we briefly review single cell micromanipulation as an approach to determine the effect of beta-MyHC mutations on cardiomyocyte function. Finally, we examine the technical challenges specific to studying beta-cardiac myosin function both using single molecule and single cell approaches.

Indexed as

Biological AssayMolecular ImagingMyocardial ContractionAnimalsCardiomyopathy, HypertrophicCardiomyopathy, Hypertrophic, FamilialGenetic Predisposition to DiseaseHumansMutationMyocytes, CardiacPhenotypeVentricular MyosinsVentricular Myosins

Identifiers

PMID20560001
PMCPMC4342148
OpenAlexW2140177925

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.