alexa Purification and identification of trichloroethylene induced proteins from Stenotrophomonas maltophilia PM102 by immuno-affinity-chromatography and MALDI-TOF Mass spectrometry.
Environmental Sciences

Environmental Sciences

Journal of Bioremediation & Biodegradation

Author(s): Mukherjee P, Roy P

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Abstract A novel bacterial isolate capable of growth on trichloroethylene as the sole carbon source was identified as Stenotrophomonas maltophilia PM102 by 16S rDNA sequencing (GenBank Acc.no. JQ797560). Serum was obtained from a rabbit immunized with the total protein extracted from the PM102 isolate grown in 0.2\% TCE with 0.2\% peptone. Antibodies to the common antigens were removed by preadsorbing the serum antibody on total protein extracted from the PM102 strain grown in 0.2\% peptone. Western blot with the preadsorbed antibody reacted to a single band in TCE and TCE with peptone lane. No reaction was seen in peptone lane. This preadsorbed antibody specific for TCE inducible antigens was immobilised on epoxy activated sepharose 6B and total protein from PM102 cells grown in minimal medium with TCE as the sole carbon source was purified through the column. The bound protein fraction was eluted and resolved through 12\% SDS PAGE. Four prominent bands observed in the protein profile were analysed by matrix-assisted laser desorption/ionization time of flight-mass spectrometry (MS) and tandem mass spectrometry (MS/MS) after in gel digestion with 25 ng/μl trypsin. A number of mono/di-oxygenases that cometabolise TCE in presence of some other primary carbon source are present in literature but this is the first attempt in identification of TCE induced proteins linked to metabolic activity with oxidoreductase like function, from a bacterial isolate that utilises TCE as the sole carbon source.
This article was published in Springerplus and referenced in Journal of Bioremediation & Biodegradation

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