Evidence map›Paper›PMID 21814393›Full record

ArticleBioinformation2011

Analysis of distribution and significance of simple sequence repeats in enteric bacteria Shigella dysenteriae SD197.

Batwal Saurabh, Sitaraman Sneha, Ranade Suvidya, Khandekar Pramod, Bajaj Shailesh

Abstract read
In one paragraph

Article in Bioinformation, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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4 · The record

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5 · Who and what money

Authors and funding

5 authors.

Batwal Saurabh
Sitaraman Sneha
Ranade Suvidya
Khandekar Pramod
Bajaj Shailesh

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We have explored the possible role of SSR density in genome to generate biological information. In our study, we have checked the SSR (simple sequence repeats) status in virulent and non virulent genes of enteric bacteria to see whether the SSRs distribution contributes to virulence. The genome, plasmid and virulent genes sequences in fasta format were downloaded from NCBI GenBank and VFDB. The sequences were subjected to SSR analysis using software tool ssr.exe. The resulting data was pasted in excel sheet and further analyzed for percentage of each type of SSR. Higher nucleotide repeats have been observed in our study. Overall high density of SSRs can enhance antigenic variance of the pathogen population in a strategy that counteracts the host immune response. Frequency of A and T repeats is higher in the chromosome, plasmid and the virulence genes. However, in dinucleotide repeats the frequencies of GC/CG repeats are higher in genome, whereas plasmid has more of AT/TA repeats. Genome has trinucleotide repeats having predominantly G and C whereas plasmid has trinucleotide repeats having predominantly A and T. The repeat number obtained and percentage of repeats is higher in virulence genes as compared to other gene families. Due to the presence of this large number of SSRs, the organism has an enormous potential for generating this genomic and phenotypic diversity.

Identifiers

PMID21814393
PMCPMC3143398

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