FEATURES

DESCRIPTION

Also known as EPB41_HUMAN, EPB41, E41P. Protein 4.1 is a major structural element of the erythrocyte membrane skeleton. It plays a key role in regulating membrane physical properties of mechanical stability and deformability by stabilizing spectrin-actin interaction. Recruits DLG1 to membranes. Required for dynein-dynactin complex and NUMA1 recruitment at the mitotic cell cortex during anaphase (PubMed:23870127). Binds with a high affinity to glycophorin and with lower affinity to band III protein. Associates with the nuclear mitotic apparatus. Interacts with calmodulin (PubMed:10692436). Interacts with CENPJ (PubMed:11003675). Interacts with DLG1 (PubMed:7937897). Also found to associate with contractile apparatus and tight junctions. Interacts with NUMA1; this interaction is negatively regulated by CDK1 during metaphase and promotes anaphase-specific localization of NUMA1 in symmetrically dividing cells (PubMed:23870127). Interacts with ATP2B1; regulates small intestinal calcium absorption through regulation of membrane expression of ATP2B1 (By similarity).

EXTERNAL LINKS

EPB41

Protein 4.1

EPB41

Molecular Synopsis