PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 23609990-4 2013 The structure demonstrates that Abeta residues 10-16, which are not in complex with the antibody, adopt a mixture of local polyproline II-helix and turn type conformations, enhancing cooperativity between the two adjacent histidine residues His13 and His14. Histidine 222-231 amyloid beta precursor protein Homo sapiens 32-37