Predicted to enable GTPase binding activity; actin filament binding activity; and ankyrin binding activity. Predicted to be a structural constituent of cytoskeleton. Involved in central nervous system formation and protein localization to plasma membrane. Acts upstream of or within regulation of SMAD protein signal transduction. Located in several cellular components, including M band; axolemma; and cuticular plate. Is expressed in heart; liver; lung; nervous system; and spleen. Used to study Beckwith-Wiedemann syndrome. Orthologous to human SPTBN1 (spectrin beta, non-erythrocytic 1).
MGI Description
PHENOTYPE:
Homozygous inactivation of this gene leads to mid-gestational lethality due to gastrointestinal, liver, neural, and cardiac defects, whereas heterozygotes survive until adulthood and spontaneously
develop cancers in several organs.
[provided by MGI curators]