Also found in: Acronyms.
ACTN1A gene on chromosome 14q24.1 that encodes an actin-binding bundling protein expressed in various cells, playing different roles in each. In non-muscle cells, the cytoskeletal isoform is found along microfilament bundles and adherens-type junctions, where it is involved in binding actin to the membrane; skeletal, cardiac and smooth muscle isoforms are localised to the Z-disc and analogous dense bodies, where they help anchor myofibrillar actin filaments.
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