Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The system of actin and myosin that, with other substances, constitutes muscle fiber and is responsible for muscular contraction.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun biochemistry A protein complex composed of actin and myosin, found in muscle fibres.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a protein complex in muscle fibers; composed of myosin and actin; shortens when stimulated and causes muscle contractions

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[act(in) + myosin.]

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Examples

  • "Pericyte actomyosin-mediated contraction at the cell-material interface can modulate the microvascular niche."

    PhysOrg.com - latest science and technology news stories 2010

  • The conversion of the chemical energy of ATP into mechanical work by myosin involves coordinated changes in the actomyosin affinity and the orientation of myosin cross-bridges relative to the fiber axis

    PLoS ONE Alerts: New Articles Shenping Wu et al. 2010

  • TC, Reisler E (1999) Nonspecific weak actomyosin interactions: relocation of charged residues in subdomain 1 of actin does not alter actomyosin function.

    PLoS ONE Alerts: New Articles Shenping Wu et al. 2010

  • Wu S, Reedy MC, Reedy MK (2007) Imaging actomyosin in situ.

    PLoS ONE Alerts: New Articles Shenping Wu et al. 2010

  • B, Yu LC (1993) Structural changes in the actomyosin cross-bridges associated with force generation.

    PLoS ONE Alerts: New Articles Shenping Wu et al. 2010

  • The researchers demonstrated that any significant change in the dynamics of actomyosin assembly or par6α activity stops neuron migration in its tracks.

    WebWire | Recent Headlines 2009

  • To determine if Bub2 has an effect on actomyosin ring contraction through its regulation of Tem1, we used live cell imaging of Myo1-GFP in a bub2Delta strain.

    BioMed Central - Latest articles Su Young Park 2009

  • In healthy myocardium, cardiomyocytes attach to a collagen-based extracellular matrix that must be sufficiently flexible for actomyosin forces to pump the heart.

    PhysOrg.com - latest science and technology news stories 2009

  • The perfect substrate, one that mimics the elasticity of normal heart tissue, provides an environment optimal for transmitting contractile work to the matrix and for promoting actomyosin striation and thus healthy and mature heart fibers.

    PhysOrg.com - latest science and technology news stories 2009

  • Available information suggests that thrombin induces endothelial permeability by promoting actomyosin contractility through the Rho / ROCK signaling pathway.

    Journal of Biological Chemistry current issue J. Gavard 2008

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