Flavonoid-mediated inhibition of SARS coronavirus 3C-like protease expressed in Pichia pastoris
Identifieur interne : 001F85 ( Main/Exploration ); précédent : 001F84; suivant : 001F86Flavonoid-mediated inhibition of SARS coronavirus 3C-like protease expressed in Pichia pastoris
Auteurs : Thi Thanh Hanh Nguyen [Corée du Sud, États-Unis] ; Hye-Jin Woo [Corée du Sud, États-Unis] ; Hee-Kyoung Kang [Corée du Sud, États-Unis] ; VAN DAO NGUYEN [Viêt Nam] ; Young-Min Kim [Corée du Sud] ; Do-Won Kim [Corée du Sud] ; Sul-Ah Ahn [Corée du Sud] ; YONGMEI XIA [République populaire de Chine] ; Doman Kim [États-Unis]Source :
- Biotechnology letters [ 0141-5492 ] ; 2012.
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- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
The 3C-like protease (3CLpro) of severe acute respiratory syndrome associated coronavirus (SARS-CoV) is vital for SARS-CoV replication and is a promising drug target. Recombinant 3CLpro was expressed in Pichia pastoris GS 115 as a 42 kDa protein that displayed a Km of 15 ± 2 μM with Dabcyl-KTSAVLQSGFRKME-Edans as substrate. Purified 3CLpro was used for inhibition and kinetic assays with seven flavonoid compounds. The IC50 of six flavonoid compounds were 47-381 μM. Quercetin, epigallocatechin gallate and gallocatechin gallate (GCG) displayed good inhibition toward 3CLpro with IC50 values of 73, 73 and 47 μM, respectively. GCG showed a competitive inhibition pattern with Ki value of 25 ± 1.7 μM. In molecular docking experiments, GCG displayed a binding energy of -14 kcal mol-1 to the active site of 3CLpro and the galloyl moiety at 3-OH position was required for 3CLpro inhibition activity.
Affiliations:
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Le document en format XML
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<series><title level="j" type="main">Biotechnology letters</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Coronavirus</term>
<term>Flavonoid</term>
<term>Inhibition</term>
<term>Peptidases</term>
<term>Pichia pastoris</term>
<term>Severe acute respiratory syndrome</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Flavonoïde</term>
<term>Inhibition</term>
<term>Peptidases</term>
<term>Syndrome respiratoire aigu sévère</term>
<term>Coronavirus</term>
<term>Pichia pastoris</term>
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<front><div type="abstract" xml:lang="en">The 3C-like protease (3CL<sup>pro</sup>
) of severe acute respiratory syndrome associated coronavirus (SARS-CoV) is vital for SARS-CoV replication and is a promising drug target. Recombinant 3CL<sup>pro</sup>
was expressed in Pichia pastoris GS 115 as a 42 kDa protein that displayed a K<sub>m</sub>
of 15 ± 2 μM with Dabcyl-KTSAVLQSGFRKME-Edans as substrate. Purified 3CL<sup>pro</sup>
was used for inhibition and kinetic assays with seven flavonoid compounds. The IC<sub>50</sub>
of six flavonoid compounds were 47-381 μM. Quercetin, epigallocatechin gallate and gallocatechin gallate (GCG) displayed good inhibition toward 3CL<sup>pro</sup>
with IC<sub>50</sub>
values of 73, 73 and 47 μM, respectively. GCG showed a competitive inhibition pattern with K<sub>i</sub>
value of 25 ± 1.7 μM. In molecular docking experiments, GCG displayed a binding energy of -14 kcal mol<sup>-1</sup>
to the active site of 3CL<sup>pro</sup>
and the galloyl moiety at 3-OH position was required for 3CL<sup>pro</sup>
inhibition activity.</div>
</front>
</TEI>
<affiliations><list><country><li>Corée du Sud</li>
<li>République populaire de Chine</li>
<li>Viêt Nam</li>
<li>États-Unis</li>
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<name sortKey="Kim, Young Min" sort="Kim, Young Min" uniqKey="Kim Y" first="Young-Min" last="Kim">Young-Min Kim</name>
<name sortKey="Woo, Hye Jin" sort="Woo, Hye Jin" uniqKey="Woo H" first="Hye-Jin" last="Woo">Hye-Jin Woo</name>
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<country name="États-Unis"><region name="Californie"><name sortKey="Hanh Nguyen, Thi Thanh" sort="Hanh Nguyen, Thi Thanh" uniqKey="Hanh Nguyen T" first="Thi Thanh" last="Hanh Nguyen">Thi Thanh Hanh Nguyen</name>
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<name sortKey="Kim, Doman" sort="Kim, Doman" uniqKey="Kim D" first="Doman" last="Kim">Doman Kim</name>
<name sortKey="Woo, Hye Jin" sort="Woo, Hye Jin" uniqKey="Woo H" first="Hye-Jin" last="Woo">Hye-Jin Woo</name>
</country>
<country name="Viêt Nam"><noRegion><name sortKey="Van Dao Nguyen" sort="Van Dao Nguyen" uniqKey="Van Dao Nguyen" last="Van Dao Nguyen">VAN DAO NGUYEN</name>
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<country name="République populaire de Chine"><noRegion><name sortKey="Yongmei Xia" sort="Yongmei Xia" uniqKey="Yongmei Xia" last="Yongmei Xia">YONGMEI XIA</name>
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