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‘Infinite’ genomes predicted

1st April 2013


TIGR scientist Hervé Tettelin and colleagues have published a study in the early online edition of the Proceedings of the National Academy of Sciences.

TIGR scientists, with collaborators compared the genomic sequence of eight isolates of the same bacterial species: Streptococcus agalactiae, also known as Group B Strep (GBS).

Analysing the GBS genomes, the researchers discovered a surprisingly continual stream of diversity. Each GBS strain contained an average of 1806 genes present in every strain (thus constituting the GBS core genome) plus 439 genes absent in one or more strains. Moreover, mathematical modelling showed that unique genes will continue to emerge, even after thousands of genomes are sequenced. 

For more information, visit www.tigr.org





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