HBV Mutation Detail Information

Virus Mutation HBV Mutation M204V


Basic Characteristics of Mutations
Mutation Site M204V
Mutation Site Sentence Recombinants expressing patient derived RT genes containing the rtL180M+M204V lamivudine resistance (LAM-R) mutations demonstrated a LAM-R phenotype.
Mutation Level Amino acid level
Mutation Type Nonsynonymous substitution
Gene/Protein/Region RT
Standardized Encoding Gene P  
Genotype/Subtype G;D;H;B;F;E;C;A
Viral Reference -
Functional Impact and Mechanisms
Disease Hepatitis B, Chronic    
Immune -
Target Gene -
Clinical and Epidemiological Correlations
Clinical Information -
Treatment Lamivudine(LAM)
Location US
Literature Information
PMID 21396961
Title HBV DNA replication mediated by cloned patient HBV reverse transcriptase genes from HBV genotypes A-H and its use in antiviral phenotyping assays
Author Zhu Y,Curtis M,Borroto-Esoda K
Journal Journal of virological methods
Journal Info 2011 May;173(2):340-6
Abstract The aim of this study is to establish a phenotyping assay to analyze patient HBV polymerase/reverse transcriptase (RT) sequences for potential drug resistance against RT inhibitors. HBV RT (pol aa 304-715, including the entire RT) from clinical isolates were amplified and ligated into a plasmid vector (pRTAN) expressing a genotype A HBV genome lacking the RT region. HBV DNA replication of the recombinants and their drug susceptibilities were assessed by transient transfection into HepG2 cells and intracellular core DNA was analyzed either by Southern blot or using a 96-well format and quantification by qPCR. Cloning of the HBV RT gene from clinical isolates representing genotypes A-H was successful and led to virus DNA replication. Recombinants expressing patient derived RT genes containing the rtL180M+M204V lamivudine resistance (LAM-R) mutations demonstrated a LAM-R phenotype. Similarly, patient derived RT genes containing the adefovir resistance (ADV-R) mutations rtA181V or rtN236T demonstrated an ADV-R phenotype. Recombinants containing HBV RT from paired patient samples without genotypic changes had similar EC(50) values. In conclusion, a phenotyping assay for HBV RT gene was developed, allowing evaluation of patient-derived HBV RT from genotypes A-H, and confirmed the drug resistance phenotype in samples containing LAM-R or ADV-R mutations.
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.