Structural Basis of HIV-1 Inhibition by Nucleotide-Competing Reverse Transcriptase Inhibitor INDOPY-1.

ABSTRACT: HIV-1 reverse transcriptase (RT) is an essential enzyme, targeting half of approved anti-AIDS drugs. While nucleoside RT inhibitors (NRTIs) are DNA chain terminators, the nucleotide-competing RT inhibitor (NcRTI) INDOPY-1 blocks dNTP binding to RT. Lack of structural information hindered INDOPY-1 improvement. Here we report the HIV-1 RT/DNA/INDOPY-1 crystal structure, revealing a unique mode of inhibitor binding at the polymerase active site without involving catalytic metal ions. The structure may enable new strategies for developing NcRTIs.

SUBMITTER: Ruiz FX 

PROVIDER: S-EPMC7737671 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature