[Highly expressed in secretory tissues (liver and pancreas) by human HYOU1 Gene (HSP70 Family), hypoxia-induced 999-aa (precursor) 150 kD Hypoxia Up-Regulated 1 Protein is an endoplasmic reticulum cytoprotectant in oxygen deprivation that may act as a chaperone with GRPs and participate in protein folding and secretion. ORP150 contains a C-terminal KNDEL sequence and N-terminal similarity to HSP70 ATPase domain. ORP150 suppression is associated with accelerated apoptosis. ORP150 expression in neurons suppresses caspase-3-like activity and enhances BDNF under hypoxia signaling. Elimination of the signal peptide through an alternative translation site may generate a cytosolic housekeeping protein. (NCI) ( NCI )]