Genomic and Functional Characterization of Environmental Strains of SDS-Degrading Pseudomonas spp., Providing a Source of New Sulfatases

Frontiers in Microbiology
Ewa M FurmanczykAdam Sobczak

Abstract

Biochemical, physiological and genomic comparisons of two Pseudomonas strains, assigned previously to the Pseudomonas jessenii subgroup, which are efficient SDS-degraders were carried out. A GO enrichment analysis showed that the genomes of SDS-degraders encode more genes connected with bacterial cell wall biosynthesis and alkanesulfonate monooxygenase activity than their closest relatives from the P. jessenii subgroup. A transcriptomic analysis of the most promising strain exposed to detergent suggests that although SDS can be later utilized as a carbon source, in early stages it influences cell envelope integrity, causing a global stress response followed by cell wall modification and induction of repair mechanisms. Genomes of the analyzed strains from P. jessenii group encode multiple putative sulfatases and their enzymatic activity was experimentally verified, which led to the identification of three novel enzymes exhibiting activity toward SDS. Two of the novel alkylsulfatases showed their highest activity at pH 8.0 and the temperature of 60°C or 70°C. One of the enzymes retained its activity even after 1 h of incubation at 60°C. Ions like K+ and Mg2+ enhanced enzymatic activity of both proteins, whereas Cu2+ or EDTA had i...Continue Reading

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Citations

Jan 8, 2019·International Journal of Systematic and Evolutionary Microbiology·Aharon Oren, George M Garrity

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Datasets Mentioned

BETA
NIRS00000000.1
MUJK00000000.1
IMG
2667527228
MUJK00000000
GSE110573

Methods Mentioned

BETA
Assay
DNA Assay
electrophoresis
RNA-Seq
PCR
glycosylation
protein folding

Software Mentioned

JSpecies
SPAdes
BLASTn
OrthoVenn
DELTA
BLASTP
SignalP
COGNIZER
Muscle
Cutadapt

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