Synonyms: actinin 1 smooth muscle,Actinin alpha 1,actinin,alpha 1,ACTN 1,Actn1,ACTN1,Alpha Actinin 1,Alpha actinin cytoskeletal isoform,Alpha-actinin cytoskeletal isoform,Alpha-actinin-1,BDPLT15,F actin cross linking protein,F-actin cross-linking protein,FLJ40884,FLJ54432,Non muscle alpha actinin 1,Non-muscle alpha-actinin-1
Background: Alpha actinins belong to the spectrin gene superfamily which represents a diverse group of cytoskeletal proteins, including the alpha and beta spectrins and dystrophins. Alpha actinin is an actin-binding protein with multiple roles in different cell types. In nonmuscle cells, the cytoskeletal isoform is found along microfilament bundles and adherens-type junctions, where it is involved in binding actin to the membrane. In contrast, skeletal, cardiac, and smooth muscle isoforms are localized to the Z-disc and analogous dense bodies, where they help anchor the myofibrillar actin filaments. This gene encodes a nonmuscle, cytoskeletal, alpha actinin isoform and maps to the same site as the structurally similar erythroid beta spectrin gene. Three transcript variants encoding different isoforms have been found for this gene.