PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 21693903-7 2008 We report an ab initio study by means of the ADF program, which provides a complete insight into the donation/back-donation mechanism characterizing the bond between the Ti atom and the four H(2) molecules, and a full understanding of the catalytic role played by the Ti atom. Titanium 170-172 destrin, actin depolymerizing factor Homo sapiens 45-48