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PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
1991-2-27
pubmed:databankReference
pubmed:abstractText
cDNA fragments of a 5'-terminal region of the hepatitis C virus (HCV) genome were isolated by the reverse polymerase chain reaction from RNA extracted from plasma samples of healthy Japanese carriers. Their nucleotide sequence was compared with that of the original isolate which had been passaged twice in chimpanzees. No deletions or insertions were observed between the two sequences in the regions examined. Both the 5' untranslated and putative nucleocapsid (core) protein regions were highly conserved (99% and 91% nucleotide identities, respectively). In contrast, the region immediately downstream which encodes a putative envelope glycoprotein(s) showed only 74% nucleotide identity between the two isolates. At the polypeptide level, the core and envelope domains showed 97% and 75% amino acid identities, respectively. This envelope variation may reflect the adaptation of HCV to the different hosts and/or the result of immunological selection. The highly conserved nucleotide sequence of the 5' untranslated and core regions may play an important regulatory role in the life cycle of HCV.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0022-1317
pubmed:author
pubmed:issnType
Print
pubmed:volume
71 ( Pt 12)
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3027-33
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:2177094-Amino Acid Sequence, pubmed-meshheading:2177094-Animals, pubmed-meshheading:2177094-Base Sequence, pubmed-meshheading:2177094-Capsid, pubmed-meshheading:2177094-Carrier State, pubmed-meshheading:2177094-Cloning, Molecular, pubmed-meshheading:2177094-DNA, Viral, pubmed-meshheading:2177094-Genes, Viral, pubmed-meshheading:2177094-Hepacivirus, pubmed-meshheading:2177094-Hepatitis C, pubmed-meshheading:2177094-Humans, pubmed-meshheading:2177094-Molecular Sequence Data, pubmed-meshheading:2177094-Pan troglodytes, pubmed-meshheading:2177094-Polymerase Chain Reaction, pubmed-meshheading:2177094-Protein Conformation, pubmed-meshheading:2177094-Viral Core Proteins, pubmed-meshheading:2177094-Viral Nonstructural Proteins, pubmed-meshheading:2177094-Viral Proteins, pubmed-meshheading:2177094-Viral Structural Proteins
pubmed:year
1990
pubmed:articleTitle
The putative nucleocapsid and envelope protein genes of hepatitis C virus determined by comparison of the nucleotide sequences of two isolates derived from an experimentally infected chimpanzee and healthy human carriers.
pubmed:affiliation
Department of Enteroviruses, National Institute of Health, Tokyo, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't