This gene is a member of the BCL2/adenovirus E1B 19 kd-interacting protein (BNIP) family. It interacts with the E1B 19 kDa protein, which protects cells from virally-induced cell death. The encoded protein also interacts with E1B 19 kDa-like sequences of BCL2, another apoptotic protector. In addition, this protein is involved in vesicle transport into the endoplasmic reticulum. Alternative splicing of this gene results in four protein products with identical N- and C-termini. [provided by RefSeq, Mar 2011],
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Function:
Alternative products:Additional isoforms seem to exist,Function:SNARE that may be involved in targeting and fusion of Golgi-derived retrograde transport vesicles with the ER. Required for maintenance of ER network. Implicated in the suppression of cell death.,miscellaneous:Silencing of BNIP1 disrupts ER morphology.,similarity:Belongs to the SEC20 family.,subunit:Component of a SNARE complex consisting of STX18, USE1L, BNIP1/SEC20L and SEC22B. Interacts directly with STX18, RINT1/TIP20L and NAPA. Interacts with ZW10 through RINT1. Interacts with BCL2 and adenovirus E1B 19 kDa protein.,tissue specificity:High levels of isoform 1 in heart, brain, liver skeletal muscle and pancreas. Moderate levels of isoform 3 in placenta, lung and kidney. High levels of isoform 4 in testis and small intestine.,
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Cellular Localization:
Endoplasmic reticulum membrane ; Single-pass type IV membrane protein . Mitochondrion membrane ; Single-pass type IV membrane protein . Localization to the mitochondrion is regulated by RNF186. .
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Tissue Expression:
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.