UNIPROT #

Q12981

PROTEIN NAME

BNIP1

SYNONYMS

BCL2 adenovirus E1B 19kD interacting protein 1 antibody; BCL2/adenovirus E1B 19 kDa protein-interacting protein 1 antibody; BNIP1 antibody; MGC41600 antibody; Nip1 antibody; OTTHUMP00000161077 antibody; OTTHUMP00000161078 antibody; OTTHUMP00000161079 antibody; OTTHUMP00000223580 antibody; sec20 antibody; SEC20_HUMAN antibody; SEC20L antibody; Transformation-related gene 8 protein antibody; TRG-8 antibody; TRG8 antibody; Vesicle transport protein SEC20 antibody

SEQUENCE SIMILARITIES

Belongs to the SEC20 family.

TISSUE SPECIFICITY

Isoform 1 is highly expressed in heart, brain, liver skeletal muscle and pancreas. Isoform 3 is moderately expressed in placenta, lung and kidney. Isoform 4 is highly expressed in testis and small intestine.

POST-TRANSLATIONAL MODIFICATION

Polyubiquitinated. 'Lys-63'-linked polyubiquitination by RNF185 increases the interaction with the autophagy receptor SQSTM1. Undergoes 'Lys-29'- and 'Lys-63'-linked polyubiquitination by RNF186 that may regulate BNIP1 localization to the mitochondrion.

SUBCELLULAR LOCATION

Endoplasmic reticulum. Mitochondrion.

FUNCTION

The adenovirus E1B protein is a viral homolog of the Bcl-2 family of proteins that are involved in regulating cell death. A family of interacting proteins, which are designated Nip or Bnip and include BNIP-1, BNIP-2, BNIP-3 and Nix, associate with both the E1B protein and Bcl-2 proteins to mediate apoptotic signaling. BNIP-1 contains a hydrophobic transmembrane domain, which enables its localization to the nuclear envelope, endoplasmic recticulum and mitochondria.