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Stabilization of the Central Part of Tropomyosin Molecule Alters the Ca 2+-sensitivity of Actin-Myosin Interaction

descriptionPublicationkeyboard_double_arrow_right Article 15 Sep 2013Publisher:Acta Naturae LtdJournal:Acta Naturae, volume 5, pages 126-129 (issn: 2075-8251, Copyright policy )
Authors: Shchepkin, D.; Matyushenko, A.; Kopylova, G.; Artemova, N.; Bershitsky, S.; Tsaturyan, A.; Levitsky, D.;

doi: 10.32607/20758251-2013-5-3-126-129

pmid: 24303208

pmc: PMC3848074

Stabilization of the Central Part of Tropomyosin Molecule Alters the Ca 2+-sensitivity of Actin-Myosin Interaction

Abstract

We show that the mutations D137L and G126R, which stabilize the central part of the tropomyosin (Tm) molecule, increase both the maximal sliding velocity of the regulated actin filaments in the in vitro motility assay at high Са 2+ concentrations and the Са 2+-sensitivity of the actin-myosin interaction underlying this sliding. Based on an analysis of the recently published data on the structure of the actin-Tmmyosin complex, we suppose that the physiological effects of these mutations in Tm can be accounted for by their influence on the interactions between the central part of Tm and certain sites of the myosin head.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
18
Average
Average
Top 10%
gold