Unknown

Dataset Information

0

Curcumin Allosterically Inhibits the Dengue NS2B-NS3 Protease by Disrupting Its Active Conformation.


ABSTRACT: Flaviviruses including dengue virus and Zika virus encode a unique two-component NS2B-NS3 protease essential for maturation/infectivity, thus representing a key target for designing antiflavivirus drugs. Here, for the first time, by NMR and molecular docking, we reveal that curcumin allosterically inhibits the dengue protease by binding to a cavity with no overlap with the active site. Further molecular dynamics simulations decode that the binding of curcumin leads to unfolding/displacing the characteristic ?-hairpin of the C-terminal NS2B and consequently disrupting the closed (active) conformation of the protease. Our study identified a cavity most likely conserved in all flaviviral NS2B-NS3 proteases, which could thus serve as a therapeutic target for the discovery/design of small-molecule allosteric inhibitors. Moreover, as curcumin has been used as a food additive for thousands of years in many counties, it can be directly utilized to fight the flaviviral infections and as a promising starting for further design of potent allosteric inhibitors.

SUBMITTER: Lim L 

PROVIDER: S-EPMC7557217 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature

altmetric image

Publications

Curcumin Allosterically Inhibits the Dengue NS2B-NS3 Protease by Disrupting Its Active Conformation.

Lim Liangzhong L   Dang Mei M   Roy Amrita A   Kang Jian J   Song Jianxing J  

ACS omega 20200929 40


Flaviviruses including dengue virus and Zika virus encode a unique two-component NS2B-NS3 protease essential for maturation/infectivity, thus representing a key target for designing antiflavivirus drugs. Here, for the first time, by NMR and molecular docking, we reveal that curcumin allosterically inhibits the dengue protease by binding to a cavity with no overlap with the active site. Further molecular dynamics simulations decode that the binding of curcumin leads to unfolding/displacing the ch  ...[more]

Similar Datasets

| S-EPMC8793048 | biostudies-literature
| S-EPMC4335830 | biostudies-literature
| S-EPMC3642332 | biostudies-literature
| S-EPMC6312647 | biostudies-literature
| S-EPMC3842573 | biostudies-literature
| S-EPMC3026091 | biostudies-literature
| S-EPMC5411607 | biostudies-literature
| S-EPMC3923078 | biostudies-literature
| S-EPMC2933675 | biostudies-literature
| S-EPMC10224173 | biostudies-literature