PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 1086478-4 1976 Orientation of OH, H, and CH2OH on C-2, C-4, and C-5 are also important, but their perturbations are not nearly as detrimental to the priming action as those on C-1 and C-3. Hydroxymethyl radical 26-31 complement C2 Homo sapiens 35-38