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  • Title: [Cloning and sequencing of cDNA of E2/NS1 gene of hepatitis C virus].
    Author: Shen D, Lu H, Li M, He L, Shang D, Ma X.
    Journal: Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi; 1997 Sep; 11(3):227-31. PubMed ID: 15617335.
    Abstract:
    Hepatitis C virus (HCV) RNA extracted from serum of a patient infected with HCV in Beijing was converted to cDNA by reverse transcription. HCV E2/NS1 gene (approximately 930 bp) was amplified by nested polymerase chain reaction and was inserted into pGEM-T plasmid vector. The 431 bp nucleotide sequence at 5' terminus of this gene was determined by dideoxy-mediated chain termination method. The result of comparison of this sequence and sequences of another 9 HCV isolates suggested that the isolate we obtained was highly homologous to HCV genotype II. There are two hypervariable regions (HVR) at the N terminus of envelope protein encoded by HCV E2/NS1 gene. Several relatively conserved amino acid residues and areas located in and out of HVR were also observed. They are concerned in maintenance of spatial conformation of HCV envelope protein, but their immune function remains to be further studied.
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