Inhibitor recognition specificity of MERS-CoV papain-like protease may differ from that of SARS-CoV.
Identifieur interne : 000E47 ( PubMed/Corpus ); précédent : 000E46; suivant : 000E48Inhibitor recognition specificity of MERS-CoV papain-like protease may differ from that of SARS-CoV.
Auteurs : Hyun Lee ; Hao Lei ; Bernard D. Santarsiero ; Joseph L. Gatuz ; Shuyi Cao ; Amy J. Rice ; Kavankumar Patel ; Michael Z. Szypulinski ; Isabel Ojeda ; Arun K. Ghosh ; Michael E. JohnsonSource :
- ACS chemical biology [ 1554-8937 ] ; 2015.
English descriptors
- KwdEn :
- Allosteric Regulation, Amino Acid Sequence, Antiviral Agents (chemistry), Catalytic Domain, Cysteine Endopeptidases (chemistry), Endopeptidases (chemistry), High-Throughput Screening Assays, Humans, Kinetics, Middle East Respiratory Syndrome Coronavirus (chemistry), Middle East Respiratory Syndrome Coronavirus (enzymology), Models, Molecular, Molecular Sequence Data, Protease Inhibitors (chemistry), Protein Binding, Protein Structure, Secondary, Recombinant Proteins (chemistry), SARS Virus (chemistry), SARS Virus (enzymology), Species Specificity, Surface Plasmon Resonance, Ubiquitin Thiolesterase (antagonists & inhibitors), Ubiquitin Thiolesterase (chemistry), Viral Proteins (antagonists & inhibitors), Viral Proteins (chemistry).
- MESH :
- chemical , antagonists & inhibitors : Ubiquitin Thiolesterase, Viral Proteins.
- chemical , chemistry : Antiviral Agents, Cysteine Endopeptidases, Endopeptidases, Protease Inhibitors, Recombinant Proteins, Ubiquitin Thiolesterase, Viral Proteins.
- chemistry : Middle East Respiratory Syndrome Coronavirus, SARS Virus.
- enzymology : Middle East Respiratory Syndrome Coronavirus, SARS Virus.
- Allosteric Regulation, Amino Acid Sequence, Catalytic Domain, High-Throughput Screening Assays, Humans, Kinetics, Models, Molecular, Molecular Sequence Data, Protein Binding, Protein Structure, Secondary, Species Specificity, Surface Plasmon Resonance.
Abstract
The Middle East Respiratory Syndrome coronavirus (MERS-CoV) papain-like protease (PLpro) blocking loop 2 (BL2) structure differs significantly from that of SARS-CoV PLpro, where it has been proven to play a crucial role in SARS-CoV PLpro inhibitor binding. Four SARS-CoV PLpro lead inhibitors were tested against MERS-CoV PLpro, none of which were effective against MERS-CoV PLpro. Structure and sequence alignments revealed that two residues, Y269 and Q270, responsible for inhibitor binding to SARS-CoV PLpro, were replaced by T274 and A275 in MERS-CoV PLpro, making critical binding interactions difficult to form for similar types of inhibitors. High-throughput screening (HTS) of 25 000 compounds against both PLpro enzymes identified a small fragment-like noncovalent dual inhibitor. Mode of inhibition studies by enzyme kinetics and competition surface plasmon resonance (SPR) analyses suggested that this compound acts as a competitive inhibitor with an IC50 of 6 μM against MERS-CoV PLpro, indicating that it binds to the active site, whereas it acts as an allosteric inhibitor against SARS-CoV PLpro with an IC50 of 11 μM. These results raised the possibility that inhibitor recognition specificity of MERS-CoV PLpro may differ from that of SARS-CoV PLpro. In addition, inhibitory activity of this compound was selective for SARS-CoV and MERS-CoV PLpro enzymes over two human homologues, the ubiquitin C-terminal hydrolases 1 and 3 (hUCH-L1 and hUCH-L3).
DOI: 10.1021/cb500917m
PubMed: 25746232
Links to Exploration step
pubmed:25746232Le document en format XML
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<term>Cysteine Endopeptidases (chemistry)</term>
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<term>Kinetics</term>
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<term>Protein Structure, Secondary</term>
<term>Recombinant Proteins (chemistry)</term>
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<term>SARS Virus (enzymology)</term>
<term>Species Specificity</term>
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<term>Ubiquitin Thiolesterase (antagonists & inhibitors)</term>
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<front><div type="abstract" xml:lang="en">The Middle East Respiratory Syndrome coronavirus (MERS-CoV) papain-like protease (PLpro) blocking loop 2 (BL2) structure differs significantly from that of SARS-CoV PLpro, where it has been proven to play a crucial role in SARS-CoV PLpro inhibitor binding. Four SARS-CoV PLpro lead inhibitors were tested against MERS-CoV PLpro, none of which were effective against MERS-CoV PLpro. Structure and sequence alignments revealed that two residues, Y269 and Q270, responsible for inhibitor binding to SARS-CoV PLpro, were replaced by T274 and A275 in MERS-CoV PLpro, making critical binding interactions difficult to form for similar types of inhibitors. High-throughput screening (HTS) of 25 000 compounds against both PLpro enzymes identified a small fragment-like noncovalent dual inhibitor. Mode of inhibition studies by enzyme kinetics and competition surface plasmon resonance (SPR) analyses suggested that this compound acts as a competitive inhibitor with an IC50 of 6 μM against MERS-CoV PLpro, indicating that it binds to the active site, whereas it acts as an allosteric inhibitor against SARS-CoV PLpro with an IC50 of 11 μM. These results raised the possibility that inhibitor recognition specificity of MERS-CoV PLpro may differ from that of SARS-CoV PLpro. In addition, inhibitory activity of this compound was selective for SARS-CoV and MERS-CoV PLpro enzymes over two human homologues, the ubiquitin C-terminal hydrolases 1 and 3 (hUCH-L1 and hUCH-L3). </div>
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<Abstract><AbstractText>The Middle East Respiratory Syndrome coronavirus (MERS-CoV) papain-like protease (PLpro) blocking loop 2 (BL2) structure differs significantly from that of SARS-CoV PLpro, where it has been proven to play a crucial role in SARS-CoV PLpro inhibitor binding. Four SARS-CoV PLpro lead inhibitors were tested against MERS-CoV PLpro, none of which were effective against MERS-CoV PLpro. Structure and sequence alignments revealed that two residues, Y269 and Q270, responsible for inhibitor binding to SARS-CoV PLpro, were replaced by T274 and A275 in MERS-CoV PLpro, making critical binding interactions difficult to form for similar types of inhibitors. High-throughput screening (HTS) of 25 000 compounds against both PLpro enzymes identified a small fragment-like noncovalent dual inhibitor. Mode of inhibition studies by enzyme kinetics and competition surface plasmon resonance (SPR) analyses suggested that this compound acts as a competitive inhibitor with an IC50 of 6 μM against MERS-CoV PLpro, indicating that it binds to the active site, whereas it acts as an allosteric inhibitor against SARS-CoV PLpro with an IC50 of 11 μM. These results raised the possibility that inhibitor recognition specificity of MERS-CoV PLpro may differ from that of SARS-CoV PLpro. In addition, inhibitory activity of this compound was selective for SARS-CoV and MERS-CoV PLpro enzymes over two human homologues, the ubiquitin C-terminal hydrolases 1 and 3 (hUCH-L1 and hUCH-L3). </AbstractText>
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<AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Lee</LastName>
<ForeName>Hyun</ForeName>
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