PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 14640662-2 2003 The formation of the new C-C bond is shown to take place via oxidative coupling of coordinated CO(2) and C(2)H(4) ligands resulting in a metalla-lactone intermediate, which can rearrange to an agostic species allowing for a beta-hydrogen shift process. co(2) 95-100 amyloid beta precursor protein Homo sapiens 222-228