Structure of a HIV-1 IN-Allosteric inhibitor complex at 2.93 Å resolution: Routes to inhibitor optimization.
Structure of a HIV-1 IN-Allosteric inhibitor complex at 2.93 Å resolution: Routes to inhibitor optimization.
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DOI:
10.1371/journal.ppat.1011097
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发表时间:
2023-03
期刊:
影响因子:
6.7
通讯作者:
中科院分区:
文献类型:
--
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HIV integrase (IN) inserts viral DNA into the host genome and is the target of the strand transfer inhibitors (STIs), a class of small molecules currently in clinical use. Another potent class of antivirals is the allosteric inhibitors of integrase, or ALLINIs. ALLINIs promote IN aggregation by stabilizing an interaction between the catalytic core domain (CCD) and carboxy-terminal domain (CTD) that undermines viral particle formation in late replication. Ongoing challenges with inhibitor potency, toxicity, and viral resistance motivate research to understand their mechanism. Here, we report a 2.93 Å X-ray crystal structure of the minimal ternary complex between CCD, CTD, and the ALLINI BI-224436. This structure reveals an asymmetric ternary complex with a prominent network of π-mediated interactions that suggest specific avenues for future ALLINI development and optimization. The global burden of the HIV/AIDS pandemic and continued emergence of drug resistance drives the need for novel antivirals. The allosteric integrase inhibitors, or ALLINIs, are a potent class of antivirals in development that target the enzyme integrase in a surprising fashion: the small molecules act to stabilize an inappropriate protein-protein interaction to attain biological effect. Here, we report the first atomic resolution (2.93 Å) X-ray crystal structure of the minimal ternary complex between domains of the integrase and the first ALLINI preclinical lead BI-224436. Our structure provides a more precise view of the molecular interactions that underlie drug potency, and several aspects of our data suggest routes to improving ALLINI design and minimizing acquisition of resistance.
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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:
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作者:
EIJKELENBOOM, APAM;LUTZKE, RAP;HARD, K
通讯作者:
HARD, K
DOI:
10.1073/pnas.0506924102
发表时间:
2005-11-29
影响因子:
11.1
作者:
Cherepanov, P;Ambrosio, ALB;Engelman, A
通讯作者:
Engelman, A
影响因子:
2.9
作者:
Deprez, E;Tauc, P;Brochon, JC
通讯作者:
Brochon, JC
影响因子:
3.7
作者:
Balakrishnan M;Yant SR;Tsai L;O'Sullivan C;Bam RA;Tsai A;Niedziela-Majka A;Stray KM;Sakowicz R;Cihlar T
通讯作者:
Cihlar T