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Time-series analyses of directional sequence changes in SARS-CoV-2 genomes and an efficient search method for advantageous mutations for growth in human cells
Kennosuke Wada; Yoshiko Wada; Toshimichi Ikemura.
Affiliation
  • Kennosuke Wada; Nagahama Institute of Bio-Science and Technology
  • Yoshiko Wada; Nagahama Institute of Bio-Science and Technology
  • Toshimichi Ikemura; Nagahama Institute of Bio-Science and Technology
Preprint in English | bioRxiv | ID: ppbiorxiv-151282
Journal article
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ABSTRACT
We first conducted time-series analysis of mono- and dinucleotide composition for over 10,000 SARS-CoV-2 genomes, as well as over 1500 Zaire ebolavirus genomes, and found clear time-series changes in the compositions on a monthly basis, which should reflect viral adaptations for efficient growth in human cells. We next developed a sequence alignment free method that extensively searches for advantageous mutations and rank them in an increase level for their intrapopulation frequency. Time-series analysis of occurrences of oligonucleotides of diverse lengths for SARS-CoV-2 genomes revealed seven distinctive mutations that rapidly expanded their intrapopulation frequency and are thought to be candidates of advantageous mutations for the efficient growth in human cells.
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Full text: Available Collection: Preprints Database: bioRxiv Type of study: Experimental_studies Language: English Year: 2020 Document type: Preprint
Full text: Available Collection: Preprints Database: bioRxiv Type of study: Experimental_studies Language: English Year: 2020 Document type: Preprint
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