HCVIVdb

HCVIVdb catalogs and annotates nucleotide variations within the internal ribosome entry site (IRES) of hepatitis C virus (HCV) to enable analysis of their effects on translation initiation and IRES function.

Key Features:

• Variant catalog: Aggregates naturally occurring and engineered nucleotide variants mapped to the HCV IRES within the 5' untranslated region.
• Variant count: Contains over 1,900 documented mutations across HCV IRES sequences.
• Genotypic annotation: Annotates each entry with HCV genotypic background and subtype information.
• Quantitative functional data: Links each variant to reported quantitative measures of translation-initiation efficiency.
• Reporter-system metadata: Records details of the reporter systems and experimental contexts used to generate functional measurements.
• Domain-level coverage: Includes data enabling comparative and functional analysis across all domains of the HCV IRES.
• Literature linkage: Associates each variant entry with references to original publications reporting the data.

Scientific Applications:

• Functional effect mapping: Comparative analysis of how specific IRES mutations alter cap-independent translation of the HCV polyprotein.
• Domain characterization: Systematic functional assessment of individual IRES domains across genotypes and subtypes.
• Genotype-specific studies: Investigation of genotype- and subtype-dependent variability in IRES activity and sequence conservation.
• Antiviral target prioritization: Informing site-specific drug design by identifying mutations that modulate IRES-mediated translation.
• Experimental design and interpretation: Guiding selection and interpretation of reporter assays and mutational studies of HCV IRES function.

Methodology:

Entries compile reported nucleotide variants and associated quantitative translation-initiation measurements from published studies, annotated with HCV genotype, reporter-system details, and literature references.