title: Analysis of the structure of chemically synthesized HIV-1 protease complexed with a hexapeptide inhibitor. Part I: Crystallographic refinement of 2 A data.
abstract: The structure of a complex between a hexapeptide-based inhibitor, MVT-101, and the chemically synthesized (Aba 67,95,167,195; Aba: L-alpha-amino-n-butyric acid) protease from the human immunodeficiency virus (HIV-1), reported previously at 2.3 A has now been refined to a crystallographic R factor of 15.4% at 2.0 A resolution. Root mean square deviations from ideality are 0.18 A for bond lengths and 2.4 degrees for the angles. The inhibitor can be fitted to the difference electron density map in two alternative orientations. Drastic differences are observed for positions and interactions at P3/S3 and P3'/S3' subsites of the two orientations due to different crystallographic environments.
authors.affiliation: Macromolecular Structure Laboratory, NCI-Frederick Cancer Research Facility and Development Center, MD 21702, USA.
authors.forename: M
authors.initials: M
authors.lastname: Miller
authors.forename: M
authors.initials: M
authors.lastname: Geller
authors.forename: M
authors.initials: M
authors.lastname: Gribskov
authors.forename: S B
authors.initials: SB
authors.lastname: Kent
mesh_terms: D018360:Crystallography, X-Ray; D016333:HIV Protease / Q000138:chemical synthesis / Q000737:chemistry*; D017320:HIV Protease Inhibitors / Q000737:chemistry*; D006801:Humans; D008958:Models, Molecular; D009842:Oligopeptides / Q000737:chemistry*; D011487:Protein Conformation; D014867:Water / Q000737:chemistry
chemical_list: D017320:HIV Protease Inhibitors; D009842:Oligopeptides; D014867:Water; C061946:MVT 101; D016333:HIV Protease