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Defender of cell death 1 (DAD1) was initially discovered in BHK21 cells as a negative regulator of programmed cell death, a process important for normal organism development and tissue homeostasis. DAD1 was later shown to be a subunit of the mammalian oligosaccharyltransferase complex and is required for its function and structural integrity. Mice lacking DAD1 express abnormal N-linked glycoproteins and undergo increased apoptotic-associated embryonic death. Furthermore, overexpression of DAD1 mRNA is seen in some human hepatocellular carcinomas, indicating it may also play a role in carcinogenesis. It should be noted that DAD1 is not related to the inhibitor of apoptosis proteins (IAP) family and does not contain any baculoviral IAP repeat (BIR) domains.
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Protein Aliases: DAD-1; Defender against cell death 1; Dolichyl-diphosphooligosaccharide--protein glycosyltransferase subunit DAD1; Oligosaccharyl transferase subunit DAD1; oligosaccharyltransferase 2 homolog; oligosaccharyltransferase subunit 2 (non-catalytic)
Gene Aliases: AI323713; DAD1; OST2
UniProt ID: (Human) P61803, (Mouse) P61804, (Rat) P61805
Entrez Gene ID: (Human) 1603, (Mouse) 13135, (Rat) 192275
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