actin (redirected from actin G)

actin /ac·tin/ (ak´tin) a muscle protein localized in the I band of the myofibrils; acting along with myosin, it is responsible for contraction and relaxation of muscle. It occurs in globular (G-actin) and fibrous (F-actin) forms.

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ac·tin (ktn)

n.

One of the protein components found in muscle, existing as F-actin or G-actin, into which actomyosin can be split and which acts with myosin in muscle contraction.

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actin (akˑ·tin),

n one of a pair of myofilaments involved in muscle contractions. See also myosin.

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actin

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.

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actin F

assembly of actin G monomers into filaments.

actin filaments

smallest filamentous proteins involved in a static role in cell structure and a dynamic role in cell movement.

actin G

monomeric globular protein which assembles into actin filaments.