Anti-SH3 domain -containing GRB2-like endophilin B1 antibodies enable researchers to detect and measure the SH3 domain -containing GRB2-like endophilin B1 antigen in biological samples. This target is a reported synonym of the SH3GLB1 gene, which encodes SH3 domain containing GRB2 like, endophilin B1. This protein is known to function in the apoptotic pathway and autophagy pathways, among other biological roles. The human version of SH3 domain -containing GRB2-like endophilin B1 has a canonical amino acid length of 365 residues and a protein mass of 40.8 kilodaltons, although 3 isoforms have been identified. It is reported to be localized in the membrane, cytoplasmic vesicles, mitochondria, Golgi, and cytoplasm of cells and widely expressed in many tissue types. SH3 domain -containing GRB2-like endophilin B1 is a member of the Endophilin protein family.