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자료유형
학술저널
저자정보
Yu Young Kim (Chungbuk National University) Chan Hee Lee (Chungbuk National University)
저널정보
대한미생물학회 JOURNAL OF BACTERIOLOGY AND VIROLOGY JOURNAL OF BACTERIOLOGY AND VIROLOGY Vol.43 No.4
발행연도
2013.12
수록면
317 - 327 (11page)

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Human cytomegalovirus (HCMV) is a member of beta-herpesvirus and contains a double-stranded genome with longer than 230 Kbp. HCMV infection of human is mostly asymptomatic, but often causes fatal diseases in immunocompromised people. In this study, codon usages of HCMV genes were analyzed and attempted to correlate with evolutionary conservancy. Core genes are the most conserved genes common among herpesvirus family, β-herpes genes are common to β-herpesviruses, and CMV genes are the least conserved found only in CMVs. Core genes had higher codon adaptation index (CAI) and GC content of silent 3rd codon position (GC3s) values and lower effective number of codons (Nc) and Nc/GC3s values than CMV genes. The average length of core genes was statistically longer than CMV genes, and core genes were found to be less varied than CMV genes. β-herpes genes could be placed between core and CMV genes. Higher CAI and GC3s values along with lower Nc and Nc/GC3s values are suggestive of higher codon usage bias and more adaptation to host cells. Thus it is concluded that core genes of HCMV are more biased in codon usage and adapted to host cells compared to CMV genes.

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