PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2019432-6 1991 By using human milk oligosaccharide probes, the minimal structural requirement for activity was found to be the Fuc alpha 1----2Gal beta determinant (the H sugar sequence found on all blood group substances of the ABO [H] system). Oligosaccharides 20-35 ABO, alpha 1-3-N-acetylgalactosaminyltransferase and alpha 1-3-galactosyltransferase Homo sapiens 214-217