Crystal structure of the HIV-1 reverse transcriptase (RT) in complex with the alkenyldiarylmethane (ADAM) Non-nucleoside RT Inhibitor dimethyl 3,3'-(6-methoxy-6-oxohex-1-ene-1,1-diyl)bis(5-cyano-6-methoxybenzoate).
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Publication Abstract from PubMed
Two crystal structures have been solved for separate complexes of alkenyldiarylmethane (ADAM) nonnucleoside reverse transcriptase inhibitors (NNRTI) 3 and 4 with HIV-1 reverse transcriptase (RT). The structures reveal inhibitor binding is exclusively hydrophobic in nature and the shape of the inhibitor-bound NNRTI binding pocket is unique among other reported inhibitor-RT crystal structures. Primarily, ADAMs 3 and 4 protrude from a large gap in the back side of the binding pocket, placing portions of the inhibitors unusually close to the polymerase active site and allowing 3 to form a weak hydrogen bond with Lys223. The lack of additional stabilizing interactions, beyond the observed hydrophobic surface contacts, between 4 and RT is quite perplexing given the extreme potency of the compound (IC(50) </= 1 nM). ADAM 4 was designed to be hydrolytically stable in blood plasma, and an investigation of its hydrolysis in rat plasma demonstrated it has a significantly prolonged half-life in comparison to ADAM lead compounds 1 and 2.
Crystallographic study of a novel subnanomolar inhibitor provides insight on the binding interactions of alkenyldiarylmethanes with human immunodeficiency virus-1 reverse transcriptase.,Cullen MD, Ho WC, Bauman JD, Das K, Arnold E, Hartman TL, Watson KM, Buckheit RW, Pannecouque C, De Clercq E, Cushman M J Med Chem. 2009 Oct 22;52(20):6467-73. PMID:19775161[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
↑Cullen MD, Ho WC, Bauman JD, Das K, Arnold E, Hartman TL, Watson KM, Buckheit RW, Pannecouque C, De Clercq E, Cushman M. Crystallographic study of a novel subnanomolar inhibitor provides insight on the binding interactions of alkenyldiarylmethanes with human immunodeficiency virus-1 reverse transcriptase. J Med Chem. 2009 Oct 22;52(20):6467-73. PMID:19775161 doi:10.1021/jm901167t
