Competitive inhibition of human immunodeficiency virus type-1 protease by the Gag-Pol transframe protein

Paulus, Christina and Hellebrand, Susanne and Tessmer, Uwe and Wolf, Hans and Kraeusslich, Hans-Georg and Wagner, Ralf (1999) Competitive inhibition of human immunodeficiency virus type-1 protease by the Gag-Pol transframe protein. JOURNAL OF BIOLOGICAL CHEMISTRY, 274 (31). pp. 21539-21543. ISSN 0021-9258,

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Abstract

The human immunodeficiency virus type-1 (HIV-1) transframe protein p6* is located between the structural and enzymatic domains of the Gag-Pol polyprotein, Banked by the nucleocapsid (NC) and the protease (PR) domain at its amino and carboxyl termini, respectively. Here, we report that recombinant highly purified HIV-1 p6* specifically inhibits mature HIV-1 PR activity. Kinetic analyses and cross-linking experiments revealed a competitive mechanism for PR inhibition by p6*. We further demonstrate that the four carboxyl-terminal residues of p6* are essential but not sufficient for p6*-mediated inhibition of PR activity. Based on these results, we suggest a role of the transframe protein p6* in regulating HIV-1 PR activity during viral replication.

Item Type: Article
Uncontrolled Keywords: HIV-1 PROTEASE; VIRAL INFECTIVITY; RETROVIRAL PROTEASES; PARTICLE FORMATION; ASPARTIC PROTEASE; POLYPROTEIN; EXPRESSION; SEQUENCE; PRECURSOR; DIMER;
Subjects: 600 Technology > 610 Medical sciences Medicine
Divisions: Medicine > Lehrstuhl für Medizinische Mikrobiologie und Hygiene
Depositing User: Dr. Gernot Deinzer
Date Deposited: 24 Jan 2023 13:51
Last Modified: 24 Jan 2023 13:51
URI: https://pred.uni-regensburg.de/id/eprint/49116

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