Spectrin beta chain, non-erythrocytic 4, or ß4 spectrin, is a member of the spectrin family of cytoskeletal proteins. It is found in the cytoskeleton and cell cortex of cells in the brain and pancreatic islets. It is also expressed in skeletal muscule. ß4 spectrin functions as a scaffold protein that links the actin cytoskeleton to the plasma membrane. It is involved in cell shape and organization. Mutations in the ß4 spectrin gene are associated with congenital myopathy, and neurodevelopmental disorder with hypotonia, neuropathy and deafness (NEDHND).
ICC, IHC, WB
SPTBN4 KIAA1642 SPTBN3
Fusion protein amino acids 1621-1832 (C-terminal repeats 14 to 15) of human Beta4-spectrin (also known as BetaIV-spectrin sigma1, Nonerythrocytic spectrin beta chain 4, Non-erythroid spectrin beta chain 3, SPTBN4, SPTBN3, Spnb4, KIAA1642, EMBL BAB83243.1 and Ensembl ENSRNOP00000028393, accession number Q9H254); Mouse: 98% identity (209/212 amino acids identical); Rat: 98% identity (209/212 amino acids identical); 60% identity with Beta2-spectrin
Human, Mouse, Rat
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