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Prediction of an Essential Gene with Potential Drug Target Property in Streptococcus suis using comparative genomics
Aubhishek Zaman1,*
1Department of Genetic Engineering and Biotechnology, University of Dhaka and Molecular Biology Laboratory, Department of Biochemistry and Molceular Biology, University of Dhaka
*Corresponding author
  Received : September 21, 2012
  Accepted : October 08, 2012
  Published : October 10, 2012
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Genes that are indispensible for survival are referred to as essential gene. Due to the momentous significance of these genes for cellular activity they can be selected potentially as drug targets. Here in this study, an essential gene for Streptococcus suis was predicted using coherent statistical analysis and powerful genome comparison computational method. At first the whole genome protein scatter plot was generated and subsequently, on the basis of statistical significance, a reference genome was chosen. The parameters set forth for selecting the reference genome was- the genome of the query (Streptococcus suis) and subject must fall in the same genus and yet they must vary to a good degree. Streptococcus pneumoniae was found to be suitable as the reference genome. A whole genome comparison was performed for the reference (Streptococcus pneumoniae) and the query genome (Streptococcus suis) and 14 conserved proteins from them were subjected to a screen for potential essential gene property. Among those 14 only one essential gene was found to be with impressive similarity score between reference and query. The essential gene encodes for a type of `Clp protease'. Clp proteases play major roles in degrading misfolded proteins. Results found here should help formulating a drug against Strptococcus suis which is responsible for mild to severe clinical conditions in human. However, like many other computational studies, the study has to be validated furthermore through in vitro assays for concrete proof.

Keyword: Strptococcus suis, Streptococcus pneumoniae, Essential gene, Clp protease, Reference genome
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