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Chapter 3 : Genomes of and

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Genomes of and , Page 1 of 2

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Abstract:

This chapter talks about the closest relatives of that are the commensals , , and, in particular, the important pathogen and the still relatively unknown . The genetic diversity among strains may have important consequences in the oral cavity. Draft genomes display an artificially high total number of genes and number of paralogs due to sequencing errors and gaps leading to gene fragmentation, as well as low-quality redundant sequences at contig ends. The verification results in the conclusion that this observation is not due to the fact that (i) all but one of the non- genomes studied are draft genomes, and (ii) gene prediction standards differ among sequencing centers. First, the closed B6 genome displays a higher coding percentage. Second, the coding density was measured in three unpublished draft genomes obtained from three different sequencing centers, and the average coding percentage was 84.9%. The previous observation that virtually every independent isolate of represents a distinct species according to traditional taxonomic principles is supported by our multigenome analysis. The significant sharing of core genes between and reinforces the conclusion that is one lineage of the complex.

Citation: Tettelin H, Kilian M. 2011. Genomes of and , p 37-42. In Kolenbrander P (ed), Oral Microbial Communities. ASM Press, Washington, DC. doi: 10.1128/9781555817107.ch3

Key Concept Ranking

Streptococcus mitis
0.43906704
Streptococcus pneumoniae
0.43270376
Streptococcus pseudopneumoniae
0.43270376
Streptococcus pneumoniae
0.43270376
0.43906704
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References

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Tables

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TABLE 1

Salient features of genomes analyzed

Citation: Tettelin H, Kilian M. 2011. Genomes of and , p 37-42. In Kolenbrander P (ed), Oral Microbial Communities. ASM Press, Washington, DC. doi: 10.1128/9781555817107.ch3

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