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Comparative Analyses of Base Compositions, DNA Sizes, and Dinucleotide Frequency Profiles in Archaeal and Bacterial Chromosomes and Plasmids
Author
Source
International Journal of Evolutionary Biology
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-5, 5 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-03-26
Country of Publication
Egypt
No. of Pages
5
Main Subjects
Abstract EN
In the present paper, I compared guanine-cytosine (GC) contents, DNA sizes, and dinucleotide frequency profiles in 109 archaeal chromosomes, 59 archaeal plasmids, 1379 bacterial chromosomes, and 854 bacterial plasmids.
In more than 80% of archaeal and bacterial plasmids, the GC content was lower than that of the host chromosome.
Furthermore, most of the differences in GC content found between a plasmid and its host chromosome were less than 10%, and the GC content in plasmids and host chromosomes was highly correlated (Pearson’s correlation coefficient r=0.965 in bacteria and 0.917 in archaea).
These results support the hypothesis that horizontal gene transfers have occurred frequently via plasmid distribution during evolution.
GC content and chromosome size were more highly correlated in bacteria (r=0.460) than in archaea (r=0.195).
Interestingly, there was a tendency for archaea with plasmids to have higher GC content in the chromosome and plasmid than those without plasmids.
Thus, the dinucleotide frequency profile of the archaeal plasmids has a bias toward high GC content.
American Psychological Association (APA)
Nishida, Hiromi. 2012. Comparative Analyses of Base Compositions, DNA Sizes, and Dinucleotide Frequency Profiles in Archaeal and Bacterial Chromosomes and Plasmids. International Journal of Evolutionary Biology،Vol. 2012, no. 2012, pp.1-5.
https://search.emarefa.net/detail/BIM-464323
Modern Language Association (MLA)
Nishida, Hiromi. Comparative Analyses of Base Compositions, DNA Sizes, and Dinucleotide Frequency Profiles in Archaeal and Bacterial Chromosomes and Plasmids. International Journal of Evolutionary Biology No. 2012 (2012), pp.1-5.
https://search.emarefa.net/detail/BIM-464323
American Medical Association (AMA)
Nishida, Hiromi. Comparative Analyses of Base Compositions, DNA Sizes, and Dinucleotide Frequency Profiles in Archaeal and Bacterial Chromosomes and Plasmids. International Journal of Evolutionary Biology. 2012. Vol. 2012, no. 2012, pp.1-5.
https://search.emarefa.net/detail/BIM-464323
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-464323