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- W3150241708 abstract "Objective To determine the nucleotide sequence of noncoding regions of Measles virus strain Changchun 47 (CC 47) and to compare them with other measles virus for revealing some vaccine related information. Methods Six overlapped fragments, that covers complete genome of CC 47 were amplified by using RT PCR, all of the amplified fragments have been cloned and sequenced.Results Seven noncoding regions lie in the genome sequence of CC 47 separated by six structure genes. The noncoding regions of CC 47 contain 1 791 nucleotides totally. Comparing of the noncoding regions of CC 47 with other wild type strains and five Edmonston derived vaccine strains, four nucleotide substitutions were shared by nearly all vaccine strains. Two of these were in the genomic 3′ terminal transcriptional control region:position 26(U→A),42(U→G); the other were in the F mRNA 5′ untranslated region of M/F intergenic region. These site substitutions may influence the efficiency of mRNA synthesis, processing, and translation, as well as genome replication and encapsidation.Conclusion The nucleotide substitutions shared by different genotype measles virus vaccine strains may be related to virus growth in semipermissive cell or process of attenuation, which provide useful data for molecular epidemiology of measles virus. The nucleotide substitutions for attenuation were involved in several regions other than one definite region." @default.
- W3150241708 created "2021-04-13" @default.
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- W3150241708 date "2001-01-01" @default.
- W3150241708 modified "2023-09-27" @default.
- W3150241708 title "Nucleotide sequence of the noncoding regions of measles virus stain CC-47 and comparison with other measles viruses" @default.
- W3150241708 hasPublicationYear "2001" @default.
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