迄今为止,新冠病毒肺炎疫情已造成全球近2亿人感染,数百万人因新冠肺炎而罹难。针对疫情病原——新型冠状病毒,人们对其重要药物靶标开展了深入而详实的研究。对药物靶标蛋白三维结构的解析,对于我们了解药物作用机制,以及开发新的药物具有非常重要的指导意义。文章总结了针对新冠病毒主蛋白酶及转录复制复合体的多种结构,分析了药物小分子抑制相应靶标蛋白的机制,以及对于抗击新冠疫情的重要意义。
So far, more than 200 million people were infected and millions of people have died during this worldwide COVID-19 pandemic. In response to the SARS-CoV-2, the pathogen of the epidemic, scientists have carried out in-depth and detailed researches on its drug targets. The analysis of the three-dimensional structures of drug target proteins has guiding significance for people to understand the mechanism of drug candidates and develop new drugs. This article summarizes the structures of the main protease and transcription-replication complex of SARS-CoV-2, analyzes the mechanism of small molecules inhibiting the corresponding target protein, and elucidates the significance in fighting the COVID-19 pandemic.
[1] REHMAN S U, SHAFIQUE L, IHSAN A, et al. Evolutionary trajectory for the emergence of novel coronavirus SARS-CoV-2 [J].
Pathogens, 2020, 9(3): 240.
[2] ZHOU P, YANG X L, WANG X G, et al. A pneumonia outbreak associated with a new coronavirus of probable bat origin [J]. Nature, 2020, 579(7798): 270-273.
[3] SUBISSI L, POSTHUMA C C, COLLET A, et al. One severe acute respiratory syndrome coronavirus protein complex integrates
processive RNA polymerase and exonuclease activities [J]. Proc Natl Acad Sci USA, 2014, 111(37): E3900-3909.
[4] JIN Z, DU X, XU Y, et al. Structure of M pro from SARS-CoV-2 and discovery of its inhibitors [J]. Nature, 2020, 582(7811): 289-293.
[5] GAO Y, YAN L, HUANG Y, et al. Structure of the RNA-dependent RNA polymerase from COVID-19 virus [J]. Science, 2020, 368(6492): 779-782.
[6] LEHMANN K C, GULYAEVA A, ZEVENHOVEN-DOBBE J C, et al. Discovery of an essential nucleotidylating activity associated
with a newly delineated conserved domain in the RNA polymerase-containing protein of all nidoviruses [J]. Nucleic Acids Res, 2015, 43(17): 8416-8434.
[7] CHENG A, ZHANG W, XIE Y, et al. Expression, purification, and characterization of SARS coronavirus RNA polymerase [J].
Virology, 2005, 335(2): 165-176.
[8] PENG Q, PENG R, YUAN B, et al. Structural and biochemical characterization of the nsp12-nsp7-nsp8 core polymerase complex
from SARS-CoV-2 [J]. Cell Rep, 2020, 31(11): 107774.
[9] WANG Q, WU J, WANG H, et al. Structural basis for RNA replication by the SARS-CoV-2 polymerase [J]. Cell, 2020, 182(2):
417-428.e13.
[10] ZHAI Y, SUN F, LI X, et al. Insights into SARS-CoV transcription and replication from the structure of the nsp7-nsp8 hexadecamer [J]. Nat Struct Mol Biol, 2005, 12(11): 980-986.
[11] YIN W, MAO C, LUAN X, et al. Structural basis for inhibition of the RNA-dependent RNA polymerase from SARS-CoV-2 by
remdesivir [J]. Science, 2020, 368(6498): 1499-1504.
[12] PENG Q, PENG R, YUAN B, et al. Structural basis of SARS-CoV-2 polymerase Inhibition by Favipiravir [J]. Innovation, 2021,
2(1): 100080.
[13] YIN W, LUAN X, LI Z, et al. Structural basis for inhibition of the SARS-CoV-2 RNA polymerase by suramin [J]. Nat Struct Mol Biol, 2021, 28(3): 319-325.
[14] YAN L, ZHANG Y, GE J, et al. Architecture of a SARS-CoV-2 mini replication and transcription complex [J]. Nat Commun, 2020,
11(1): 5874.
[15] ROMANO M, RUGGIERO A, SQUEGLIA F, et al. A structural view of SARS-CoV-2 RNA replication machinery: RNA synthesis,
proofreading and final Capping [J]. Cells, 2020, 9(5) :1267.
[16] YAN L, GE J, ZHENG L, et al. Cryo-EM structure of an extended SARS-CoV-2 replication and transcription complex reveals an
intermediate state in cap synthesis [J]. Cell, 2021, 184(1): 184-193.e10.
[17] MA Y, WU L, SHAW N, et al. Structural basis and functional analysis of the SARS coronavirus nsp14-nsp10 complex [J]. Proc
Natl Acad Sci USA, 2015, 112(30): 9436-9441.
[18] YAN L, YANG Y, LI M, et al. Coupling of N7-methyltransferase and 3'-5' exoribonuclease with SARS-CoV-2 polymerase reveals
mechanisms for capping and proofreading [J]. Cell, 2021, 184(13): 3474-3485.e11.