The internal ribosome entry site (IRES) is important for translation of hepatitis C virus (HCV) mRNA and has a unique RNA structure containing conserved domains I to IV. To investigate the function of domain II, we selected RNA aptamers that bind to domain II of HCV IRES by applying a simple and convenient selection method using a hybridized tag for fixing domain II RNA on magnetic beads instead of synthesizing long RNA. In addition, we employed surface plasmon resonance (SPR) technology to measure the binding affinity of each generation and to obtain detailed kinetic constants. The selected aptamers have a consensus sequence, 5'-UAUGGCU-3', which is complementary to the apical loop of domain II. The loop-loop interaction between the consensus sequence and domain II was confirmed by mutagenesis and nuclease mapping analyses. Binding affinities were dependent on the local structure containing the conserved sequence. The aptamers could inhibit IRES-dependent translation.
RNA aptamers targeted to domain II of hepatitis C virus IRES that bind to its apical loop region. Publishing Authors By Initials
RNA aptamers targeted to domain II of hepatitis C virus IRES that bind to its apical loop region. Journal Published:
PUBLICATION TYPE: Research Support, Non-U.S. Gov
Journal: Journal of biochemistry
VOLUME: 133
Page Numbers: 263-70
Journal Abbreviation: J. Biochem.
ISSN: 0021-924X
DAY: 19
MONTH: Mar
YEAR: 2003
RNA aptamers targeted to domain II of hepatitis C virus IRES that bind to its apical loop region. Information
Number of References:
LANGUAGE: eng
NlmUniqueID: 376600
RNA aptamers targeted to domain II of hepatitis C virus IRES that bind to its apical loop region. Keywords Mesh Terms:
KEYWORDS: RNA, Viral
MESH TERMS: metabolism
Chemical & Substance for Abstract: RNA aptamers targeted to domain II of hepatitis C virus IRES that bind to its apical loop region. Information
Substance Name: RNA, Viral
Registry Number: 0
Grant and Affiliation Information for RNA aptamers targeted to domain II of hepatitis C virus IRES that bind to its apical loop region.
AFFILIATION: Institute for Biological Resources and Functions, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8566, Japan.
Country: Japan
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MEDLINETA: J Biochem
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