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SMG1

Monday 27 March 2006

SMG1 is a newly discovered member of the DNA-damage-inducible phosphatidylinositol-3-kinase-related kinase family, which also includes ATM, ATR and DNA-dependent protein kinase (DNAPK).

The SMG1 kinase might respond to both DNA damage and truncated mRNA species that might arise as a result of blocked transcription.

SMG1 is a member of the phosphatidylinositol kinase-related kinase (PIKKs) family that shows homology with phosphatidylinositol 3-kinases (PI3Ks) (MIM.171834) within their core catalytic domains.

PIKKs are distinct in that they are high molecular mass proteins that function as serine/threonine protein kinases rather than as lipid kinases.