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IFCPAR AR (ENGLISH) for CD - CEFIPRA

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26<br />

Environmental Sciences<br />

Prof. Surya S. Singh<br />

Department of Biochemistry<br />

Osmania University<br />

Hyderabad<br />

<strong>IFCP<strong>AR</strong></strong><br />

Indo-French Centre <strong>for</strong> the Promotion of Advanced Research<br />

Project 3709-1<br />

CH<strong>AR</strong>ACTERIZATION OF METAL RESPONSIVE GENES FROM BACTERIA<br />

Dr Agnès Rodrigue<br />

Microbiologie, Adaptation et<br />

Pathogénie UMR5240 CNRS-INSA-<br />

UCB<br />

Villeurbanne<br />

Duration: Three years and six months (September, 2007 to<br />

February, 2011)<br />

Objectives<br />

i) In Silico approach <strong>for</strong> screening, identification and<br />

selection of metal responsive genes in Pseudomonas<br />

putida and P.aeruginosa<br />

ii) A proteomic approach <strong>for</strong> the identification of nickel and<br />

cobalt responsive genes in Pseudomonas aeruginosa and<br />

P. putida<br />

iii) Cloning and expression of genes selected from<br />

Pseudomonas putida and P.aeruginosa, following<br />

bioin<strong>for</strong>matics or comparative proteomics<br />

iv) Generation of knockout mutants <strong>for</strong> Ni and Co transporter<br />

gene(s) in P.putida and P. aeruginosa<br />

v) Applications in metal removal (Ni/Co) using recombinant<br />

bacteria<br />

Accomplishments<br />

i) A complete genomic analysis of metal transportomes has<br />

been accomplished from the four divergent Pseudomonas<br />

(Ppu, Pae, Pfl, Psy) which aided in identifying two novel<br />

heavy metal resistance determinants in Ppu and Psy (mrdH<br />

and rcnAPsy)<br />

ii) A new metal efflux transporter, mrdH, displaying chimeric<br />

domain organization, broad substrate spectrum has been<br />

identified in P. putida KT2440<br />

iii) Recombinant E. coli <strong>AR</strong>Y023 and Deinococus radiodurans<br />

expressing NiCoT genes were explored to decontaminate<br />

60 Co from spent decontamination solutions of nuclear<br />

power reactors<br />

iv) The proteomics approach led to the identification of 182<br />

proteins regulated by Ni or Co. Among them, 9 are proteins<br />

of unknown function that constitute of wide reservoir of<br />

novel genes <strong>for</strong> further studies<br />

v) The biological component <strong>for</strong> the designing of Ni and Co<br />

biosensor <strong>for</strong> Ni and Co environmental monitoring is<br />

achieved<br />

Research papers published: Three<br />

Papers presented in conference: 1<br />

Posters: 3

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