Anti-Nip1 antibodies enable researchers to detect and measure the Nip1 antigen in biological samples. This target is a reported synonym of the BNIP1 gene, which encodes BCL2 interacting protein 1. This protein is known to function in the apoptotic pathway, among other biological roles. The human version of Nip1 has a canonical amino acid length of 228 residues and a protein mass of 26.1 kilodaltons, although 4 isoforms have been identified. It is reported to be localized in the mitochondria and ER of cells and widely expressed in many tissue types. Nip1 is a member of the SEC20 protein family.