PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 11782172-2 2002 The conformationally constrained peptide mimics that were used are cyclopropane-derived isosteres whereby a cyclopropane ring substitutes to the N-Calpha-Cbeta atoms of the phosphotyrosine. cyclopropane 67-79 CEA cell adhesion molecule 4 Homo sapiens 145-153