Activated CHEK2 phosphorylates BRCA1 on serine residue S988 (Lee et al. 2000), but does not phosphorylate BARD1, the heterodimerization partner of BRCA1 (Kim et al. 2006).
Fonseca, D, Li, H, Cevher, M, Kleiman, FE, Lee, SB, Kim, HS, Parmelee, A
Collins, KM, Brown, AL, Lee, CH, Lee, JS, Chung, JH
protein serine/threonine kinase activity of p-S,3T-CHEK2 [nucleoplasm]
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