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1fko

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[[Image:1fko.gif|left|200px]]
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{{STRUCTURE_1fko| PDB=1fko | SCENE= }}
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'''CRYSTAL STRUCTURE OF NNRTI RESISTANT K103N MUTANT HIV-1 REVERSE TRANSCRIPTASE IN COMPLEX WITH DMP-266(EFAVIRENZ)'''
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===CRYSTAL STRUCTURE OF NNRTI RESISTANT K103N MUTANT HIV-1 REVERSE TRANSCRIPTASE IN COMPLEX WITH DMP-266(EFAVIRENZ)===
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==Overview==
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BACKGROUND: Efavirenz is a second-generation non-nucleoside inhibitor of HIV-1 reverse transcriptase (RT) that has recently been approved for use against HIV-1 infection. Compared with first-generation drugs such as nevirapine, efavirenz shows greater resilience to drug resistance mutations within HIV-1 RT. In order to understand the basis for this resilience at the molecular level and to help the design of further-improved anti-AIDS drugs, we have determined crystal structures of efavirenz and nevirapine with wild-type RT and the clinically important K103N mutant. RESULTS: The relatively compact efavirenz molecule binds, as expected, within the non-nucleoside inhibitor binding pocket of RT. There are significant rearrangements of the drug binding site within the mutant RT compared with the wild-type enzyme. These changes, which lead to the repositioning of the inhibitor, are not seen in the interaction with the first-generation drug nevirapine. CONCLUSIONS: The repositioning of efavirenz within the drug binding pocket of the mutant RT, together with conformational rearrangements in the protein, could represent a general mechanism whereby certain second-generation non-nucleoside inhibitors are able to reduce the effect of drug-resistance mutations on binding potency.
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(as it appears on PubMed at http://www.pubmed.gov), where 11080630 is the PubMed ID number.
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{{ABSTRACT_PUBMED_11080630}}
==About this Structure==
==About this Structure==
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[[Category: Hiv-1 reverse transcriptase]]
[[Category: Hiv-1 reverse transcriptase]]
[[Category: Non-nucleoside inhibitor]]
[[Category: Non-nucleoside inhibitor]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 03:24:35 2008''

Revision as of 00:24, 1 July 2008

Image:1fko.png

Template:STRUCTURE 1fko

CRYSTAL STRUCTURE OF NNRTI RESISTANT K103N MUTANT HIV-1 REVERSE TRANSCRIPTASE IN COMPLEX WITH DMP-266(EFAVIRENZ)

Template:ABSTRACT PUBMED 11080630

About this Structure

1FKO is a Protein complex structure of sequences from Human immunodeficiency virus 1. Full crystallographic information is available from OCA.

Reference

Structural basis for the resilience of efavirenz (DMP-266) to drug resistance mutations in HIV-1 reverse transcriptase., Ren J, Milton J, Weaver KL, Short SA, Stuart DI, Stammers DK, Structure. 2000 Oct 15;8(10):1089-94. PMID:11080630

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