loop_ _entity_src_nat.entity_id _entity_src_nat.pdbx_src_id _entity_src_nat.common_name _entity_src_nat.genus _entity_src_nat.species _entity_src_nat.details 2 1 'bacteria' 'Actinomycetes' '?' ; Acetyl-pepstatin was isolated by Dr. K. Oda, Osaka Prefecture University, and provided to us by Dr. Ben Dunn, University of Florida, and Dr. J. Kay, University of Wales. ;