An official website of the United States government.

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Concept Breadcrumbs

Preferred Term:

actin

Definition:
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.
Concept Schemes:
NALT Full
https://lod.nal.usda.gov/nalt-core
Broader Concept:
Entry Terms:
  • N-actin
  • F-actin
  • gamma-actin
  • G-actin
  • beta-actin
  • alpha-actin
  • alpha-isoactin
  • isoactin
URI:
https://lod.nal.usda.gov/nalt/3179
Download this Concept:
RDF/XMLCreated 2006-01-19, last modified 2017-03-08