PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 12477927-5 2002 (ii) Endogenous cdc25 is phosphorylated on Ser-287 in oocytes and dephosphorylated in response to progesterone just before cdc2 dephosphorylation and M-phase entry. Progesterone 98-110 cyclin-dependent kinase 1 L homeolog Xenopus laevis 16-20