title: Enzymatic activity of a synthetic 99 residue protein corresponding to the putative HIV-1 protease.
abstract: A protein corresponding to the putative protease of the human immunodeficiency virus 1 (HIV-1) has been prepared by total chemical synthesis. This 99 residue synthetic enzyme showed specific proteolytic activity on fragments of the natural gag precursor and on synthetic peptide substrates, two of which released fragments corresponding to the N terminus and C terminus of the protease molecule itself. The observed substrate specificity was not restricted to cleavage at Phe/Tyr-Pro bonds. Inhibition studies provided direct evidence that the HIV-1 protease belongs to the family of aspartic proteases. The availability of the HIV-1 protease as a defined molecular species has important implications for the design of specific inhibitors that do not interfere with the host cell metabolism as a possible route to antiviral agents against acquired immunodeficiency syndrome (AIDS).
authors.affiliation: Division of Biology, California Institute of Technology, Pasadena 91125.
authors.forename: J
authors.initials: J
authors.lastname: Schneider
authors.forename: S B
authors.initials: SB
authors.lastname: Kent
mesh_terms: D000595:Amino Acid Sequence; D002851:Chromatography, High Pressure Liquid; D004591:Electrophoresis, Polyacrylamide Gel; D015683:Gene Products, gag; D006678:HIV / Q000201:enzymology*; D008969:Molecular Sequence Data; D010436:Pepstatins / Q000494:pharmacology; D010447:Peptide Hydrolases / Q000138:chemical synthesis* / Q000235:genetics / Q000378:metabolism; D010455:Peptides / Q000378:metabolism; D011480:Protease Inhibitors / Q000494:pharmacology; D011498:Protein Precursors / Q000235:genetics; D012191:Retroviridae Proteins / Q000235:genetics; D013379:Substrate Specificity
chemical_list: D015683:Gene Products, gag; D010436:Pepstatins; D010455:Peptides; D011480:Protease Inhibitors; D011498:Protein Precursors; D012191:Retroviridae Proteins; C014195:Streptomyces pepsin inhibitor; D010447:Peptide Hydrolases; C031375:pepstatin