Compositional symmetry of DNA duplex in bacterial genomes

Computational analysis of seven bacterial genomes revealed that both the DNA strands in a genome exhibit compositional symmetry in terms of the abundance of a non-palindromic oligonucleotide (di, tri, tetra, penta, hexa, hepta and octa). This symmetry in DNA duplex suggests that both strands in the...

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Bibliographic Details
Published in:Current science (Bangalore) 2005-07, Vol.89 (2), p.374-384
Main Authors: Verma, S.K, Das, Debojyoti, Buragohain, A.K, Ray, S.K., Tezpur University, Tezpur (India). Department of Molecular Biology and Biotechnology), Satapathy, S.S.(T.U., Tezpur (India). Department of Computer Science and Information Techonology
Format: Article
Language:English
Subjects:
Bacteria
Bacterial genomes
BACTERIOSES
Base composition
CHROMOSOMES
DNA
GENOMES
Introns
Molecular biology
Nucleotide sequences
Nucleotides
Oligonucleotides
REPLICATION
RESEARCH COMMUNICATIONS
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Summary:Computational analysis of seven bacterial genomes revealed that both the DNA strands in a genome exhibit compositional symmetry in terms of the abundance of a non-palindromic oligonucleotide (di, tri, tetra, penta, hexa, hepta and octa). This symmetry in DNA duplex suggests that both strands in the duplex possess similar compositional characteristics, though the nucleotide sequences in the DNA strands are different (complementary). This compositional symmetry between DNA strands in genomes may be due to the abundance of coding sequences in both the strands and to ensure the synchronous completion of replication of the two strands.
ISSN:0011-3891