PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 6654588-4 1983 Starting from Hyb-Phe-Pro-ONp (V) two epimeric N(3-hydroxybutyryl)diketopiperazines (VI) and (VII) and the corresponding 10-membered cyclodepsipeptide (VIII) could be isolated. Depsipeptides 133-150 cytochrome c oxidase subunit 8A Homo sapiens 152-156