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Genome Sequencing Revealed the Biotechnological Potential of an Obligate Thermophile Geobacillus thermoleovorans Strain RL Isolated from Hot Water Spring

Singh, Durgesh Narain, Sood, Utkarsh, Singh, Amit Kumar, Gupta, Vipin, Shakarad, Mallikarjun, Rawat, Charu Dogra, Lal, Rup
Indian journal of microbiology 2019 v.59 no.3 pp. 351-355
Bacillus thermoleovorans, amino acid metabolism, amylases, bacteria, beta-glucosidase, biocatalysts, bioremediation, biotechnology, carbohydrate metabolism, carboxylic ester hydrolases, catechol oxidase, genes, genome-wide association study, glutaminase, glycosides, hot springs, laccase, nucleotide sequences, pullulanase, sequence analysis, thermophilic microorganisms, xylanases, India
In the present study, we report the draft genome sequence of an obligate thermophile Geobacillus thermoleovorans strain RL isolated from Manikaran hot water spring located atop the Himalayan ranges, India. Strain RL grew optimally at 70 °C but not below 45 °C. The draft genome (3.39 Mb) obtained by Illumina sequencing contains 138 contigs with an average G + C content of 52.30%. RAST annotation showed that amino acid metabolism pathways were most dominant followed by carbohydrate metabolism. Genome-wide analysis using NCBI’s Prokaryotic Genome Annotation Pipeline revealed that strain RL encodes for a cocktail of industrially important hydrolytic enzymes glycoside hydrolase, α-and β-glucosidase, xylanase, amylase, neopullulanase, pullulanase and lipases required for white biotechnology. In addition, the presence of genes encoding green biocatalyst multicopper polyphenol oxidase (laccase) and an anticancer enzyme L-glutaminase reflects the significance of strain RL in gray and red biotechnology, respectively. Strain RL is a thermophilic multi-enzyme encoding bacterium which could be the source for the recombinant production of biotechnologically significant enzymes. In, addition whole cells of strain RL may be used in bioremediation studies.