Endoplasmic reticulum chaperone BiP homolog

UniProtKB accession:  P20163

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UniProtKB description:  Endoplasmic reticulum chaperone that plays a key role in protein folding and quality control in the endoplasmic reticulum lumen (By similarity). Required for ER dynamics during the first embryonic cell divisions (PubMed:15716356). Specifically, controls ER transition into sheet-like structures at the onset of mitosis, possibly by regulating homotypic membrane fusion (PubMed:15716356).