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GRP94 is a 803 amino acid protein belonging to the heat shock protein 90 family. It acts as a molecular chaperone that functions in the processing and transport of secreted proteins. GRP94 and its N-terminal fragment stimulates CTL expansion and maturation of human monocyte-derived dendritic cells (MDDC). It plays a central role in innate as well as acquired immunity, maturation and chemotaxis of dendritic cells, Ab production, cross-priming, as a potential marker in breast cancer and is a peptide acceptor in endoplasmic reticulum and an accessory to peptide loading of MHC class I molecules. Expression of GRP94 suppressed A23187-induced apoptosis and stabilized calcium homeostasis. GRP94 is expressed in melanoma or liver metastases of colon carcinoma cells, human gastric carcinoma BGC-823 cells.
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Protein Aliases: 94 kDa glucose-regulated protein; Endoplasmic reticulum resident protein 99; Endoplasmin; endothelial cell (HBMEC) glycoprotein; epididymis luminal protein 35; epididymis secretory sperm binding protein Li 125m; ERp99; gp96 homolog; GRP-94; Heat shock protein 90 kDa beta member 1; heat shock protein 90kDa beta (Grp94), member 1; heat shock protein 90kDa beta family member 1; Heat shock protein family C member 4; Polymorphic tumor rejection antigen 1; stress-inducible tumor rejection antigen gp96; transforming growth factor alpha regulated gene 2; tumor rejection antigen (gp96) 1; Tumor rejection antigen 1; Tumor rejection antigen gp96
Gene Aliases: ECGP; endoplasmin; ERp99; GP96; GRP94; HEL-S-125m; HEL35; HSP90B1; HSPC4; TA-3; Targ2; Tra-1; TRA1
UniProt ID: (Human) P14625, (Mouse) P08113
Entrez Gene ID: (Human) 7184, (Mouse) 22027
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