Retroviral intasome assembly and inhibition of DNA strand transfer.
Retroviral intasome assembly and inhibition of DNA strand transfer.
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Integrase is an essential retroviral enzyme that binds both termini of linear viral DNA and inserts them into a host cell chromosome. The structure of full-length retroviral integrase, either separately or in complex with DNA, has been lacking. Furthermore, although clinically useful inhibitors of HIV integrase have been developed, their mechanism of action remains speculative. Herein we report a crystal structure of full-length integrase from the prototype foamy virus in complex with its cognate DNA. The structure reveals the organization of the retroviral intasome comprising an integrase tetramer tightly associated with a pair of viral DNA ends. All three canonical integrase structural domains are involved in extensive protein-DNA and protein-protein interactions. Binding of strand transfer inhibitors displaces the reactive viral DNA end from the active site, disarming the viral nucleoprotein complex. Our findings define the structural basis of retroviral DNA integration and will allow modeling of the HIV-1 intasome to aid in the development of antiretroviral drugs.
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DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
DOI:
10.1073/pnas.150220297
发表时间:
2000-07-18
影响因子:
11.1
作者:
Chen, JCH;Krucinski, J;Stroud, RM
通讯作者:
Stroud, RM
DOI:
10.1038/nsb0995-807
发表时间:
1995-09-01
期刊:
NATURE STRUCTURAL BIOLOGY
影响因子:
--
作者:
EIJKELENBOOM, APAM;LUTZKE, RAP;HARD, K
通讯作者:
HARD, K
影响因子:
14.9
作者:
Davis IW;Leaver-Fay A;Chen VB;Block JN;Kapral GJ;Wang X;Murray LW;Arendall WB 3rd;Snoeyink J;Richardson JS;Richardson DC
通讯作者:
Richardson DC
DOI:
10.1038/nsb0797-567
发表时间:
1997-07-01
期刊:
NATURE STRUCTURAL BIOLOGY
影响因子:
--
作者:
Cai, ML;Zheng, RL;Gronenborn, AM
通讯作者:
Gronenborn, AM