Chromate Reduction in Serratia marcescens Isolated from Tannery Effluent and Potential Application for Bioremediation of Chromate Pollution
نویسندگان
چکیده
منابع مشابه
Hexavalent chromium reduction by chromate-resistant haloalkaliphilic Halomonas sp. M-Cr newly isolated from tannery effluent
The current study aimed to isolate and characterize a chromate-resistant bacterium from tannery effluent, able to reduce Cr(VI) aerobically at high pH and salinity. Environmental contamination by hexavalent chromium, Cr(VI), presents a serious public health problem. Enrichment led to the isolation of 12 bacteria displaying different degrees of chromate reduction. Phenotypic characterization and...
متن کاملStudies on Chromate Removal by Chromium-Resistant Bacillus sp. Isolated from Tannery Effluent
A chromate-removing strain was isolated from spent chrome effluent and identified as Bacillus circulans strain MN1. The isolated strain was studied for resistance to Cr (VI) and its ability to remove Cr (VI). The strain was found to tolerate Cr (VI) concentration as high as 4500 mg/L, but the cells growth was heavily influenced when initial Cr (VI) concentration was increased between 1110 mg/L ...
متن کاملCloning and sequence analysis demonstrate the chromate reduction ability of a novel chromate reductase gene from Serratia sp
The ChrT gene encodes a chromate reductase enzyme which catalyzes the reduction of Cr(VI). The chromate reductase is also known as flavin mononucleotide (FMN) reductase (FMN_red). The aim of the present study was to clone the full-length ChrT DNA from Serratia sp. CQMUS2 and analyze the deduced amino acid sequence and three-dimensional structure. The putative ChrT gene fragment of Serratia sp. ...
متن کاملEvaluation of Class II Chromate Reductases and their Bioremediation Potential
Microbial bio-reduction to Cr(III) is a promising strategy for detoxification of chromate, a prevalent anthropogenic pollutant. We propose that this activity can be enhanced in bacteria through engineering of soluble enzymes, such as NfsA, the model Class II chromate reductase of Escherichia coli. We show here that nfsA is induced by chromate, and that it reduces this compound by a “semi-tight”...
متن کاملTargets of Improvement in Bacterial Chromate Bioremediation
Cr(VI) (chromate) is a widespread, toxic and soluble environmental contaminant. Bacteria can reduce chromate to insoluble and less toxic Cr(III), and thus chromate bioremediation is of interest. Genetic and protein engineering of suitable enzymes can improve bacterial bioremediation. However, many fundamental parameters that define an organism’s capacity to remediate chromate have not previousl...
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ژورنال
عنوان ژورنال: The Scientific World JOURNAL
سال: 2002
ISSN: 1537-744X
DOI: 10.1100/tsw.2002.154