PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2489100-4 1989 Temperature dependence of NH proton chemical shift and NOE experiments showed that Boc-Asn-Aib-Thr-Aib-OMe has a tendency to form a beta-turn structure with a hydrogen bond involving Thr and Aib4 NH groups. boc 83-86 amyloid beta precursor protein Homo sapiens 130-136