Definitions

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

  • n. A protein found in muscle that together with myosin functions in muscle contraction.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A globular structural protein that polymerizes in a helical fashion to form an actin filament (or microfilament).
  • n. One of the six isoforms of actin.

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

  • n. one of the proteins into which actomyosin can be split; can exist in either a globular or a fibrous form

Etymologies

Latin āctus, motion; see act + -in.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Ancient Greek ἀκτίς (aktis, "ray"), based on the shape of the filament formed, and the English chemical suffix -in. (Wiktionary)

Examples

  • Use of the term 'actin' like' doesn't mitigate the harm this crime has on survivors of sexual violence.

    Reuters: Press Release

  • They attached a fibre of the muscle protein actin to the gamma subunit, and the beta units were attached to the substratum.

    Press Release: The 1997 Nobel Prize in Chemistry

  • Instead of someone who is a President I won't mention his name actin all kissy face with the enemy.

    Propeller Most Popular Stories

  • On the contrary, anti-decoherence stipulations of Orch OR include 1) transiently encasing bundles of dendritic microtubules in actin gel ” an isolated, shielded and water-ordered non-liquid environment for quantum processes, 2) quantum states extending among dendritic gel environments via quantum tunneling and/or entanglement through window-like gap junctions of dendritic webs, 3) microtubule quantum error correction topology (Hameroff et al, 2002) and 4) biomolecular quantum states pumped by, rather than disrupted by, heat energy.

    A Third Choice (ID Hypothesis)

  • For example, cells have several intricate systems that control their shape, one of which is based on a protein called actin.

    The Edge of Evolution

  • The molecular chain known as actin forms in pairs that twist into a double helix as does DNA.

    THE HIDDEN FACE OF GOD

  • Differences in A-states and R-states predominately involve the configuration of a long cleft that divides the myosin MD into upper and lower 50 kDa subdomains, the so-called actin binding cleft.

    PLoS ONE Alerts: New Articles

  • Bright green protein aggregates are transported from the young daughter cell into the larger mother cell using conveyor-like structures called actin cables.

    PhysOrg.com - latest science and technology news stories

  • In the study, the researchers show that this transportation is mechanical, using conveyor-like structures called actin cables.

    PhysOrg.com - latest science and technology news stories

  • Researchers demonstrated that this transportation is mechanical, using conveyor-like structures called actin cables.

    Scientific Blogging

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