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Etude des biais de composition en acides aminés des protéines microbiennes

Abstract : Living organisms are subjected to diverse selection pressures not only on global phenotype but at each level of cellular organisation.
We analysed the global amino acid composition of all proteins of each proteomes studied using multivariate analysis, Correspondence Analysis and a clustering method called dynamic clouds.
We studied:
(i) prokaryote models E. coli, B. subtilis and M. jannaschii,
(ii) a representative sample of the prokaryote world including 28 organisms of with very diverse characteristics,
(iii) the pathogenicity of P. luminescens,
(iv) a psychrophile feature of the bacterium P. haloplanktis, for which life in the cold is characterised by proteins with a
high asparagine bias, and
(v) a perspective will be to apply these analyses to simple eukaryotes through preliminary analysis of codon usage by P.
marneffei, a dimorphic pathogenic fungus.
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Contributor : Géraldine Pascal <>
Submitted on : Wednesday, March 8, 2006 - 4:51:51 PM
Last modification on : Monday, November 2, 2020 - 1:08:04 PM
Long-term archiving on: : Saturday, April 3, 2010 - 8:24:55 PM


  • HAL Id : tel-00011839, version 1



Géraldine Pascal. Etude des biais de composition en acides aminés des protéines microbiennes. Autre [q-bio.OT]. Université d'Evry-Val d'Essonne, 2005. Français. ⟨tel-00011839⟩



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