a ubiquitous cytoskeletal protein that links actin filaments to membrane glycoproteins. Six alternatively spliced isoforms have been described. Various interactions and localizations of isoforms affect myotube morphology and myogenesis. Isoforms 1 and 2 are expressed in placenta, bone marrow, brain, umbilical vein endothelial cells, retina and skeletal muscle. Isoform 1 is predominantly expressed in prostate, uterus, liver, thyroid, stomach, lymph node, small intestine, spleen, skeletal muscle, kidney, placenta, pancreas, heart, lung, platelets, endothelial cells, megakaryocytic and erythroleukemic cell lines. Isoform 2 is predominantly expressed in spinal cord and platelets. Also expressed in thyroid adenoma, neurofibrillary tangles (NFT), senile plaques in the hippocampus and cerebral cortex in Alzheimer's disease. Isoform 3 and isoform 6 are expressed predominantly in lung, heart, skeletal muscle, testis, spleen, thymus and leukocytes. Isoform 4 and isoform 5 are expressed in heart. Note: This description may include information from UniProtKB.
Protein type: Actin-binding; Motility/polarity/chemotaxis