PMID-sentid Pub_year Sent_text compound_name comp_offset prot_official_name organism prot_offset 17530754-9 2007 The excited-state spectrum of methyl, ethyl, and n-propylcobalamin is characteristic of a Cbl(III) species with a sigma-donating alkyl anion ligand (Type II). methyl, ethyl, and n-propylcobalamin 30-66 Cbl proto-oncogene Homo sapiens 90-93