actin

A protein of 42 kD, very abundant in eukaryotic cells (8-14% total cell protein) and one of the major components of the actomyosin motor and the cortical microfilament meshwork. First isolated from striated muscle and often referred to as one of the muscle proteins. G-Actin is the globular monomeric form of actin, 6.7 x 4.0nm: it polymerizes to form filamentous F-actin. ...

actin

Type: Term Pronunciation: ak′tin Definitions: 1. One of the protein components into which actomyosin can be split; it can exist in a fibrous form (F-actin) or a globular form (G-actin).
Found on http://www.medilexicon.com/medicaldictionary.php?t=900

actin

[n] - one of the proteins into which actomyosin can be split
Found on http://www.webdictionary.co.uk/definition.php?query=actin

actin

<cell biology> A filamentous proteins (42 kD) involved in muscle contraction in both smooth and striated muscle and also serves as an important structural molecule for the cytoskeleton of many eukaryotic cells. ... It is the main constituent of the thin filaments of muscle fibres. The filaments (known also as filamentous or f-actin) can be di...
Found on http://www.encyclo.co.uk/local/20973

actin

noun one of the proteins into which actomyosin can be split; can exist in either a globular or a fibrous form
Found on http://wordnetweb.princeton.edu/perl/webwn?s=actin

actin

(ak´tin) a muscle protein localized in the I band of myofibrils; acting along with myosin particles, it is responsible for the contraction and relaxation of muscle fibers.
Found on http://www.encyclo.co.uk/local/21001

actin

protein that is an important contributor to the contractile property of muscle and other cells. It exists in two forms: G-actin (monomeric globular ... [13 related articles]
Found on http://www.britannica.com/eb/a-z/a/14

actin

Summary One of two proteins involved in muscle contraction. Actin assembles into long polymer rods called microfilaments which interact with the other muscle protein, myosin, to cause shortening (contraction) in muscle cells. Actin also serves as an important structural molecule for the cytoskeleto...
Found on http://www.daviddarling.info/encyclopedia/A/actin.html

actin

actin, a protein abundantly present in many cells, especially muscle cells, that significantly contributes to the cell's structure and motility. Actin can very quickly assemble into long polymer rods called microfilaments. These microfilaments have a variety of roles—they form part of the cell...
Found on http://www.infoplease.com/ce6/sci/A0802376.html

ACTIN

A vital protein component of muscle, one of the proteins responsible for muscle contraction.
Found on http://www.thehorse.com/Glossary.xhtml?L=A

actin

(ak;tin) A protein in muscle fibers that together with myosin is responsible for contraction.
Found on http://www.mhhe.com/biosci/abio/glossary.mhtml

actin

(ak;tin) A protein in muscle fibers that together with myosin is responsible for contraction.
Found on http://www.mhhe.com/biosci/abio/glossary.mhtml

actin

The protein from which microfilaments are composed; forms the contractile filaments of sarcomeres in muscle cells.
Found on http://www.emc.maricopa.edu/faculty/farabee/biobk/biobookglossa.html

Actin

Actin is a globular multi-functional protein that forms microfilaments. It is found in all eukaryotic cells (the only known exception being nematode sperm), where it may be present at concentrations of over 100 μM. An actin protein`s mass is roughly 42-kDa and it is the monomeric subunit of two types of filaments in cells: microfilaments, one of....
Found on http://en.wikipedia.org/wiki/Actin

Actin

The protein from which microfilaments are composed; forms the contractile filaments of sarcomeres in
Found on http://www.superglossary.com/Glossary/Science/Biology/
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