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- PDB-6lqd: Structure of Enterovirus 71 in complex with NLD-22 -

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Basic information

Entry
Database: PDB / ID: 6lqd
TitleStructure of Enterovirus 71 in complex with NLD-22
Components
  • Capsid protein VP1
  • Capsid protein VP2
  • Capsid protein VP3
  • Capsid protein VP4
KeywordsVIRUS / Inhibitor
Function / homology
Function and homology information


symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MDA-5 activity / picornain 2A / symbiont-mediated suppression of host mRNA export from nucleus / symbiont genome entry into host cell via pore formation in plasma membrane / picornain 3C / T=pseudo3 icosahedral viral capsid / host cell cytoplasmic vesicle membrane / nucleoside-triphosphate phosphatase / channel activity / monoatomic ion transmembrane transport ...symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MDA-5 activity / picornain 2A / symbiont-mediated suppression of host mRNA export from nucleus / symbiont genome entry into host cell via pore formation in plasma membrane / picornain 3C / T=pseudo3 icosahedral viral capsid / host cell cytoplasmic vesicle membrane / nucleoside-triphosphate phosphatase / channel activity / monoatomic ion transmembrane transport / DNA replication / RNA helicase activity / endocytosis involved in viral entry into host cell / symbiont-mediated activation of host autophagy / RNA-directed RNA polymerase / cysteine-type endopeptidase activity / viral RNA genome replication / symbiont-mediated suppression of host gene expression / RNA-directed RNA polymerase activity / DNA-templated transcription / : / host cell nucleus / virion attachment to host cell / structural molecule activity / ATP hydrolysis activity / proteolysis / RNA binding / ATP binding / membrane / metal ion binding
Similarity search - Function
Jelly Rolls - #20 / Picornavirus coat protein / Poliovirus 3A protein-like / Poliovirus 3A protein like / Picornavirus 2B protein / Poliovirus core protein 3a, soluble domain / Picornavirus 2B protein / Peptidase C3, picornavirus core protein 2A / Picornavirus core protein 2A / Picornavirus coat protein VP4 ...Jelly Rolls - #20 / Picornavirus coat protein / Poliovirus 3A protein-like / Poliovirus 3A protein like / Picornavirus 2B protein / Poliovirus core protein 3a, soluble domain / Picornavirus 2B protein / Peptidase C3, picornavirus core protein 2A / Picornavirus core protein 2A / Picornavirus coat protein VP4 / Picornavirus coat protein (VP4) / Peptidase C3A/C3B, picornaviral / 3C cysteine protease (picornain 3C) / Picornavirales 3C/3C-like protease domain / Picornavirales 3C/3C-like protease domain profile. / Picornavirus capsid / picornavirus capsid protein / Helicase, superfamily 3, single-stranded RNA virus / Superfamily 3 helicase of positive ssRNA viruses domain profile. / Helicase, superfamily 3, single-stranded DNA/RNA virus / RNA helicase / Picornavirus/Calicivirus coat protein / Viral coat protein subunit / RNA-directed RNA polymerase, C-terminal domain / Viral RNA-dependent RNA polymerase / Reverse transcriptase/Diguanylate cyclase domain / Jelly Rolls / RNA-directed RNA polymerase, catalytic domain / RdRp of positive ssRNA viruses catalytic domain profile. / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / Peptidase S1, PA clan, chymotrypsin-like fold / Peptidase S1, PA clan / DNA/RNA polymerase superfamily / Sandwich / P-loop containing nucleoside triphosphate hydrolase / Mainly Beta
Similarity search - Domain/homology
Chem-EQ9 / Genome polyprotein
Similarity search - Component
Biological speciesHuman enterovirus 71
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.264 Å
AuthorsZhang, M. / Sun, Y. / Wang, X. / Guo, Y. / Rao, Z.
Funding support China, 1items
OrganizationGrant numberCountry
Ministry of Science and Technology (MoST, China)2017YFC840300 China
CitationJournal: J Med Chem / Year: 2020
Title: Design, Synthesis, and Evaluation of Novel Enterovirus 71 Inhibitors as Therapeutic Drug Leads for the Treatment of Human Hand, Foot, and Mouth Disease.
Authors: Min Zhang / Ying Wang / Wanli He / Yao Sun / Yan Guo / Weilong Zhong / Qiang Gao / Mingyang Liao / Xiangxi Wang / Yan Cai / Yu Guo / Zihe Rao /
Abstract: Human hand, foot, and mouth disease (HFMD) is a serious public health threat with high infection rates in children and infants who reside in Asia and the Pacific regions, and no effective drugs are ...Human hand, foot, and mouth disease (HFMD) is a serious public health threat with high infection rates in children and infants who reside in Asia and the Pacific regions, and no effective drugs are currently available. Enterovirus 71 (EV71) and coxsackievirus A16 are the major etiological pathogens. Based on an essential hydrophobic pocket on the viral capsid protein VP1, we designed and synthesized a series of small molecular weight compounds as inhibitors of EV71. A potential drug candidate named exhibited excellent antiviral activity (with an EC of 5.056 nM and a 100% protection rate for mice at a dose of 20 mg/kg) and low toxicity. had a favorable pharmacokinetic profile. High-resolution cryo-electron microscopy structural analysis confirmed bound to the hydrophobic pocket in VP1 to block viral infection. In general, was indicated to be a promising potential drug candidate for the treatment of HFMD.
History
DepositionJan 13, 2020Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Mar 11, 2020Provider: repository / Type: Initial release
Revision 1.1Mar 27, 2024Group: Data collection / Database references / Derived calculations
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_struct_oper_list
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_struct_oper_list.name / _pdbx_struct_oper_list.symmetry_operation / _pdbx_struct_oper_list.type

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Structure visualization

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  • Biological unit as complete icosahedral assembly
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  • Biological unit as icosahedral pentamer
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  • Biological unit as icosahedral 23 hexamer
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  • Deposited structure unit
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  • Simplified surface model + fitted atomic model
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  • Superimposition on EM map
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Structure viewerMolecule:
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Assembly

Deposited unit
A: Capsid protein VP1
B: Capsid protein VP2
C: Capsid protein VP3
D: Capsid protein VP4
hetero molecules


Theoretical massNumber of molelcules
Total (without water)94,8605
Polymers94,4374
Non-polymers4221
Water00
1
A: Capsid protein VP1
B: Capsid protein VP2
C: Capsid protein VP3
D: Capsid protein VP4
hetero molecules
x 60


Theoretical massNumber of molelcules
Total (without water)5,691,595300
Polymers5,666,246240
Non-polymers25,34960
Water0
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
point symmetry operation59
2


  • Idetical with deposited unit
  • icosahedral asymmetric unit
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
3
A: Capsid protein VP1
B: Capsid protein VP2
C: Capsid protein VP3
D: Capsid protein VP4
hetero molecules
x 5


  • icosahedral pentamer
  • 474 kDa, 20 polymers
Theoretical massNumber of molelcules
Total (without water)474,30025
Polymers472,18720
Non-polymers2,1125
Water0
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
point symmetry operation4
4
A: Capsid protein VP1
B: Capsid protein VP2
C: Capsid protein VP3
D: Capsid protein VP4
hetero molecules
x 6


  • icosahedral 23 hexamer
  • 569 kDa, 24 polymers
Theoretical massNumber of molelcules
Total (without water)569,16030
Polymers566,62524
Non-polymers2,5356
Water0
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
point symmetry operation5
5


  • Idetical with deposited unit in distinct coordinate
  • icosahedral asymmetric unit, std point frame
TypeNameSymmetry operationNumber
transform to point frame1
SymmetryPoint symmetry: (Schoenflies symbol: I (icosahedral))

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Components

#1: Protein Capsid protein VP1


Mass: 32727.891 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Human enterovirus 71
References: UniProt: B2ZUN0, picornain 2A, nucleoside-triphosphate phosphatase, picornain 3C, RNA-directed RNA polymerase
#2: Protein Capsid protein VP2


Mass: 27740.160 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Human enterovirus 71
References: UniProt: B2ZUN0, picornain 2A, nucleoside-triphosphate phosphatase, picornain 3C, RNA-directed RNA polymerase
#3: Protein Capsid protein VP3


Mass: 26468.225 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Human enterovirus 71
References: UniProt: B2ZUN0, picornain 2A, nucleoside-triphosphate phosphatase, picornain 3C, RNA-directed RNA polymerase
#4: Protein Capsid protein VP4


Mass: 7501.162 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Human enterovirus 71
References: UniProt: B2ZUN0, picornain 2A, nucleoside-triphosphate phosphatase, picornain 3C, RNA-directed RNA polymerase
#5: Chemical ChemComp-EQ9 / 1-(2-azanylpyridin-4-yl)-3-[5-[4-(5-methyl-1,2,4-oxadiazol-3-yl)phenoxy]pentyl]imidazolidin-2-one


Mass: 422.480 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C22H26N6O3 / Feature type: SUBJECT OF INVESTIGATION
Has ligand of interestY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Human enterovirus 71 / Type: VIRUS / Entity ID: #1-#4 / Source: NATURAL
Source (natural)Organism: Human enterovirus 71
Details of virusEmpty: NO / Enveloped: NO / Isolate: STRAIN / Type: VIRION
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD
Image recordingElectron dose: 35 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.264 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 13185 / Symmetry type: POINT

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