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GC usage of SARS-CoV-2 genes might adapt to the environment of human lung expressed genes.
Li, Yue; Yang, Xinai; Wang, Na; Wang, Haiyan; Yin, Bin; Yang, Xiaoping; Jiang, Wenqing.
  • Li Y; Department of Respiratory Diseases, Qingdao Haici Hospital, Qingdao, China.
  • Yang X; Department of Respiratory Diseases, Qingdao Haici Hospital, Qingdao, China.
  • Wang N; Department of Respiratory Diseases, Qingdao Haici Hospital, Qingdao, China.
  • Wang H; Department of Respiratory Diseases, Qingdao Haici Hospital, Qingdao, China.
  • Yin B; Department of Respiratory Diseases, Qingdao Haici Hospital, Qingdao, China.
  • Yang X; Department of Respiratory Diseases, Qingdao Haici Hospital, Qingdao, China.
  • Jiang W; Department of Respiratory Diseases, Qingdao Haici Hospital, Qingdao, China. qdhospit87@163.com.
Mol Genet Genomics ; 295(6): 1537-1546, 2020 Nov.
Article in English | MEDLINE | ID: covidwho-743727
ABSTRACT
Understanding how SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus 2) efficiently reproduces itself by taking resources from the human host could facilitate the development of drugs against the virus. SARS-CoV-2 translates its own proteins by using the host tRNAs, so that its GC or codon usage should fit that of the host cells. It is necessary to study both the virus and human genomes in the light of evolution and adaptation. The SARS-CoV-2 virus has significantly lower GC content and GC3 as compared to human. However, when we selected a set of human genes that have similar GC properties to SARS-CoV-2, we found that these genes were enriched in particular pathways. Moreover, these human genes have the codon composition perfectly correlated with the SARS-CoV-2, and were extraordinarily highly expressed in human lung tissues, demonstrating that the SARS-CoV-2 genes have similar GC usage as compared to the lung expressed human genes. RSCU (relative synonymous codon usage) and CAI (codon adaptation index) profiles further support the matching between SARS-CoV-2 and lungs. Our study indicates that SARS-CoV-2 might have adapted to the human lung environment by observing the high correlation between GC usage of SARS-CoV-2 and human lung genes, which suggests the GC content of SARS-CoV-2 is optimized to take advantage of human lung tissues.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Pneumonia, Viral / Coronavirus Infections / Betacoronavirus / Codon Usage / Lung Limits: Humans Language: English Journal: Mol Genet Genomics Journal subject: Molecular Biology / Genetics Year: 2020 Document Type: Article Affiliation country: S00438-020-01719-0

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Pneumonia, Viral / Coronavirus Infections / Betacoronavirus / Codon Usage / Lung Limits: Humans Language: English Journal: Mol Genet Genomics Journal subject: Molecular Biology / Genetics Year: 2020 Document Type: Article Affiliation country: S00438-020-01719-0