PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9388487-4 1997 Although both cyclin D1- and cyclin-E-dependent kinases are active in the late G1 phase in human fibroblasts, cyclin E/Cdk2 specifically phosphorylates p27 on threonine-187 in vitro. Threonine 159-168 cyclin dependent kinase 2 Homo sapiens 119-123