Computational genomics-proteomics and Phylogeny analysis of twenty one mycobacterial genomes (Tuberculosis & non Tuberculosis strains)

Microbial Informatics and Experimentation

Moulay Mustapha Ennaji¹  Abdelaziz Benjouad²  David Ussery³  Othmane Aouane⁴  Fathiah Zakham¹ 

[1] Laboratoire de Virologie et Hygiène & Microbiologie, Faculté des Sciences et Techniques, BP 146, Mohammedia, 20650, Morocco;Faculté des Sciences, Université Mohammed V-Agdal, Rabat, Morocco;Center for Biological Sequence Analysis, Technical University of Denmark, Lyngby, Denmark;Experimental physik, Universität des Saarlandes, Postfach 151150, 66041, Saarbrücken, Germany

关键词: Phylogeny;    Pan- core genome;    Mycobacterium tuberculosis;    Evolution;    Comparative genome analysis;    BLAST matrix;   

Others  :  811123
DOI  :  10.1186/2042-5783-2-7

 received in 2012-03-15, accepted in 2012-08-02,  发布年份 2012

【 摘 要 】

Background

The genus Mycobacterium comprises different species, among them the most contagious and infectious bacteria. The members of the complex Mycobacterium tuberculosis are the most virulent microorganisms that have killed human and other mammals since millennia. Additionally, with the many different mycobacterial sequences available, there is a crucial need for the visualization and the simplification of their data. In this present study, we aim to highlight a comparative genome, proteome and phylogeny analysis between twenty-one mycobacterial (Tuberculosis and non tuberculosis) strains using a set of computational and bioinformatics tools (Pan and Core genome plotting, BLAST matrix and phylogeny analysis).

Results

Considerably the result of pan and core genome Plotting demonstrated that less than 1250 Mycobacterium gene families are conserved across all species, and a total set of about 20,000 gene families within the Mycobacterium pan-genome of twenty one mycobacterial genomes.

Viewing the BLAST matrix a high similarity was found among the species of the complex Mycobacterium tuberculosis and less conservation is found with other slow growing pathogenic mycobacteria.

Phylogeny analysis based on both protein conservation, as well as rRNA clearly resolve known relationships between slow growing mycobacteria.

Conclusion

Mycobacteria include important pathogenic species for human and animals and the Mycobacterium tuberculosis complex is the most cause of death of the humankind. The comparative genome analysis could provide a new insight for better controlling and preventing these diseases.

【 授权许可】

   
2012 Zakham et al.; licensee BioMed Central Ltd.

【 图 表 】

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