Spectrin beta chain, erythrocytic (SPTB)

Spectrin beta chain, erythrocytic (SPTB) is a major cytoskeletal protein found primarily in red blood cells, where it forms heterotetramers with alpha-spectrin, interacting with other membrane proteins such as ankyrin and actin to maintain erythrocyte membrane stability and flexibility. Deficiencies or mutations in SPTB compromise membrane integrity and are clinically associated with hereditary spherocytosis, hereditary elliptocytosis, hereditary pyropoikilocytosis, and other hemolytic anemias, leading to abnormal erythrocyte morphology and increased cell fragility. The protein is not considered a therapeutic target, but its function is critical for erythrocyte health.

Other names

SPTBSPTB1Beta-I spectrinErythrocytic spectrin beta chainSpectrin beta chain, erythrocyticspherocytosis, clinical type IEL3HS2HSPTB1SPH2Sp betamembrane cytoskeletal proteinspectrin beta Tandilspectrin beta chain, erythrocyte

Not applicable (SPTB is not directly targeted by drugs)