PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 1499340-2 1992 Thiamin pyrophosphate catalyzes various decarboxylation and transfer reactions involving ketone groups because the thiazolium ring with its positively charged N atom can, on the loss of a proton from the adjacent C-2, generate a ylid which adds to carbonyl groups to produce a substrate ylid. Ketones 89-95 complement C2 Homo sapiens 213-216