SARS-CoV-2 Mutation Detail Information

Virus Mutation SARS-CoV-2 Mutation M165Y


Basic Characteristics of Mutations
Mutation Site M165Y
Mutation Site Sentence The M165Y mutation pushes the terminal trifluoromethyl group of nirmatrelvir out of its original position in the WT complex, disrupting its interaction with L167 and the T190 backbone oxygen (Figure 5l).
Mutation Level Amino acid level
Mutation Type Nonsynonymous substitution
Gene/Protein/Region M
Standardized Encoding Gene M  
Genotype/Subtype -
Viral Reference -
Functional Impact and Mechanisms
Disease Cell line    
Immune -
Target Gene -
Clinical and Epidemiological Correlations
Clinical Information -
Treatment nirmatrelvir
Location -
Literature Information
PMID 37637734
Title Naturally Occurring Mutations of SARS-CoV-2 Main Protease Confer Drug Resistance to Nirmatrelvir
Author Hu Y,Lewandowski EM,Tan H,Zhang X,Morgan RT,Zhang X,Jacobs LMC,Butler SG,Gongora MV,Choy J,Deng X,Chen Y,Wang J
Journal ACS central science
Journal Info 2023 Jul 24;9(8):1658-1669
Abstract The SARS-CoV-2 main protease (M(pro)) is the drug target of Pfizer's oral drug nirmatrelvir. The emergence of SARS-CoV-2 variants with mutations in M(pro) raised the alarm of potential drug resistance. To identify potential clinically relevant drug-resistant mutants, we systematically characterized 102 naturally occurring M(pro) mutants located at 12 residues at the nirmatrelvir-binding site, among which 22 mutations in 5 residues, including S144M/F/A/G/Y, M165T, E166 V/G/A, H172Q/F, and Q192T/S/L/A/I/P/H/V/W/C/F, showed comparable enzymatic activity to the wild-type (k(cat)/K(m) < 10-fold change) while being resistant to nirmatrelvir (K(i) > 10-fold increase). X-ray crystal structures were determined for six representative mutants with and/or without GC-376/nirmatrelvir. Using recombinant SARS-CoV-2 viruses generated from reverse genetics, we confirmed the drug resistance in the antiviral assay and showed that M(pro) mutants with reduced enzymatic activity had attenuated viral replication. Overall, our study identified several drug-resistant hotspots in M(pro) that warrant close monitoring for possible clinical evidence of nirmatrelvir resistance, some of which have already emerged in independent viral passage assays conducted by others.
Sequence Data -
Mutation Information
Note
Basic Characteristics of Mutations
  • Mutation Site: The specific location in a gene or protein sequence where a change occurs.
  • Mutation Level: The level at which a mutation occurs, including the nucleotide or amino acid level.
  • Mutation Type: The nature of the mutation, such as missense mutation, nonsense mutation, synonymous mutation, etc.
  • Gene/Protein/Region: Refers to the specific region of the virus where the mutation occurs. Including viral genes, viral proteins, or a specific viral genome region. If the article does not specifically indicate the relationship between the mutation and its correspondence, the main
  • Gene/Protein/Region studied in the article is marked.
  • Genotype/Subtype: Refers to the viral genotype or subtype where the mutation occurs. If the article does not specifically indicate the relationship between the mutation and its correspondence, the main Genotype/Subtype studied in the article is marked.
  • Viral Reference: Refers to the standard virus strain used to compare and analyze viral sequences.
Functional Impact and Mechanisms
  • Disease: An abnormal physiological state with specific symptoms and signs caused by viral infection.
  • Immune: The article focuses on the study of mutations and immune.
  • Target Gene: Host genes that viral mutations may affect.
Clinical and Epidemiological Correlations
  • Clinical Information: The study is a clinical or epidemiological study and provides basic information about the population.
  • Treatment: The study mentioned a certain treatment method, such as drug resistance caused by mutations. If the study does not specifically indicate the relationship between mutations and their correspondence treatment, the main treatment studied in the article is marked.
  • Location: The source of the research data.
Literature Information
  • Sequence Data: The study provides the data accession number.