Quantitative determination of gene strand bias in prokaryotic genomes.

Abstract:

:Comparative genometrics of microorganisms is a relatively new area, in which genome properties are translated into numerical indexes. Such indexes can be used for a comprehensive and comparative analysis of microbial genomes, contributing to the understanding of their evolution. This work presents a new method for quantitative determination of gene strand bias in prokaryotic chromosomes, in which data transformation of gene position skew leads to a numerical index that can be applied to quantitative comparisons of genome organization. It was applied in the comparative analysis of 49 completely sequenced Firmicutes genomes, allowing the distinction of groups defined according to their patterns of gene strand preference. The resulting groups revealed that, regarding gene strand bias, reduced genomes are, in general, the more disordered among Firmicutes, while genomes of extremophile organisms comprehend those with the highest degree of genome organization in this phylum.

journal_name

Genomics

journal_title

Genomics

authors

de Carvalho MO,Ferreira HB

doi

10.1016/j.ygeno.2007.07.010

subject

Has Abstract

pub_date

2007-12-01 00:00:00

pages

733-40

issue

6

eissn

0888-7543

issn

1089-8646

pii

S0888-7543(07)00180-2

journal_volume

90

pub_type

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