Phylogenetic conservation of the stem-loop III structure of the 5' untranslated region of Hepatitis C virus RNA among natural variants in samples collected from Southern India

Arch Virol. 2004 May;149(5):1015-26. doi: 10.1007/s00705-003-0265-8. Epub 2004 Jan 29.


The stem-loop III (SLIII) structure within the 5' untranslated region has been shown to be critical for internal initiation of translation of Hepatitis C virus (HCV). Using 'Single Strand Conformation Polymorphism (SSCP)' of the SLIII region we have investigated for natural mutations and demonstrated presence of some non-covariant changes in certain sub-domains. However, overall SLIII-RNA structure was found to be phylogenetically conserved. Additionally, by SSCP analysis we have determined the genotype of 50 HCV isolates collected from Southern India, 25 random samples were confirmed by DNA sequencing. Results showed the prevalence of genotype 1 in this part of India.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • 5' Untranslated Regions / genetics
  • Base Sequence
  • Conserved Sequence
  • Genotype
  • Hepacivirus / genetics*
  • Hepacivirus / isolation & purification
  • Hepatitis C / epidemiology
  • Hepatitis C / virology
  • Humans
  • India / epidemiology
  • Molecular Sequence Data
  • Mutation
  • Nucleic Acid Conformation
  • Phylogeny
  • Polymorphism, Single-Stranded Conformational


  • 5' Untranslated Regions