Medical Subject Headings

Last uploaded: March 22, 2026
Id http://purl.bioontology.org/ontology/MESH/D000199
http://purl.bioontology.org/ontology/MESH/D000199
Preferred Name

Actins

Definitions
Filamentous proteins that are the main constituent of the thin filaments of muscle fibers. The filaments (known also as filamentous or F-actin) can be dissociated into their globular subunits; each subunit is composed of a single polypeptide 375 amino acids long. This is known as globular or G-actin. In conjunction with MYOSINS, actin is responsible for the contraction and relaxation of muscle.
Synonyms
alpha-Isoactin
beta-Actin
Isoactin
gamma Actin
G Actin
beta Actin
alpha Actin
alpha-Actin
N Actin
G-Actin
Actin
F Actin
N-Actin
alpha Isoactin
gamma-Actin
F-Actin
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Type http://www.w3.org/2002/07/owl#Class
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