Evidence map›Paper›PMID 39374027›Full record

ArticleSmall (Weinheim an der Bergstrasse, Germany)2024

Single-Molecule Investigation of Load-Dependent Actomyosin Dissociation Kinetics for Cardiac and Slow Skeletal Myosin.

Tianbang Wang, Arnab Nayak, Theresia Kraft, Mamta Amrute-Nayak

Abstract read
In one paragraph

Article in Small (Weinheim an der Bergstrasse, Germany), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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

1 citing paper in PubMed.

  1. 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

4 authors.

Tianbang WangInstitute of Molecular and Cell Physiology, Hannover Medical School, 30625, Hannover, Germany.
Arnab NayakInstitute of Molecular and Cell Physiology, Hannover Medical School, 30625, Hannover, Germany.
Theresia KraftInstitute of Molecular and Cell Physiology, Hannover Medical School, 30625, Hannover, Germany.
Mamta Amrute-NayakInstitute of Molecular and Cell Physiology, Hannover Medical School, 30625, Hannover, Germany.ORCID 0000-0001-8582-3986

Funding

Deutsche Forschungsgemeinschaft AM 507/1-1Deutsche Forschungsgemeinschaft NA 1565/2-1Fritz Thyssen Stiftung 10.19.1.009MN
6 · The paper itself

Abstract

Myosins are ATP-powered, force-generating motor proteins involved in cardiac and muscle contraction. The external load experienced by the myosins modulates and coordinates their function in vivo. Here, this study investigates the tension-sensing mechanisms of rabbit native β-cardiac myosin (βM-II) and slow skeletal myosins (SolM-II) that perform in different physiological settings. Using mobile optical tweezers with a square wave-scanning mode, a range of external assisting and resisting loads from 0 to 15 pN is exerted on single myosin molecules as they interact with the actin filament. Influenced of load on specific strongly-bound states in the cross-bridge cycle is examined by adjusting the [ATP]. The results implies that the detachment kinetics of actomyosin ADP.Pi strongly-bound force-generating state are load sensitive. Low assisting load accelerates, while the resisting load hinders the actomyosin detachment, presumably, by slowing both the Pi and ADP release. However, under both high assisting and resisting load, the rate of actomyosin dissociation decelerates. The transition from actomyosin ADP.Pi to ADP state appears to occur with a higher probability for βM-II than SolM-II. This study interpret that dissociation of at least three strongly-bound actomyosin states are load-sensitive and may contribute to functional diversity among different myosins.

Indexed as

ActomyosinAdenosine DiphosphateAdenosine TriphosphateAnimalsKineticsOptical TweezersRabbitsSingle Molecule ImagingSkeletal Muscle MyosinsActomyosinAdenosine DiphosphateAdenosine TriphosphateSkeletal Muscle Myosinsactomyosincardiac ventricular myosinmechanosensitivityoptical trappingsingle‐molecule studies

Identifiers

PMID39374027
PMCPMC11657034

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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.