Document 0100 DOCN M94A0100 TI Inhibition of reverse transcriptase of human immunodeficiency virus type 1 and chimeric enzymes of human immunodeficiency viruses types 1 and 2 by two novel non-nucleoside inhibitors. DT 9412 AU Rubinek T; McMahon JB; Hizi A; Department of Cell Biology and Histology, Sackler School of; Medicine, Tel Aviv University, Israel. SO FEBS Lett. 1994 Aug 22;350(2-3):299-303. Unique Identifier : AIDSLINE MED/94350120 AB We have studied the effects of two non-nucleoside reverse transcriptase inhibitors (NNRTI), nitrophenyl phenyl sulfone (NPPS) and a potent derivative of oxathiin carboxanilide (UC-38), on enzymatically active molecular chimeras composed of complementary segments of the reverse transcriptases (RTs) of human immunodeficiency virus type 1 (HIV-1) and -2 (HIV-2). The substances inhibit only the DNA polymerase activity of HIV-1 RT with no effect on HIV-2 RT. The results suggest that there is a protein segment located between residues 158 and 190 that is critical for the inhibition by both compounds. However, there is probably a second segment that resides between residues 192 and 202, as in the case of NPPS, or residues 203 and 224, as in the case of UC-38, that is also crucial for the sensitivity of HIV-1 RT to both inhibitors. DE Antiviral Agents/PHARMACOLOGY Benzoates/*PHARMACOLOGY Chimeric Proteins HIV-1/ENZYMOLOGY HIV-2/ENZYMOLOGY Reverse Transcriptase/*ANTAGONISTS & INHIB Structure-Activity Relationship Sulfones/*PHARMACOLOGY Support, U.S. Gov't, P.H.S. Thiocarbamates/*PHARMACOLOGY JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).