Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 21, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/ijms21124436
Keywords
Methylobacterium populi; genome sequencing; hydrolase; quizalofop-p-ethyl; diethyl phthalate; degradation
Funding
- National Natural Science Foundation of China [31540067, 21876201]
- Basic Research Fund of Chinese Academy of Agricultural Sciences [1610042017001, 1610042018005, 1610042018006]
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Methylobacterium populiYC-XJ1 isolated from desert soil exhibited a diverse degrading ability towards aromatic oxyphenoxypropionic acid esters (AOPPs) herbicide, phthalate esters (PAEs), organophosphorus flame retardants (OPFRs), chlorpyrifos and phoxim. The genome of YC-XJ1 was sequenced and analyzed systematically. YC-XJ1 contained a large number of exogenous compounds degradation pathways and hydrolase resources. The quizalofop-p-ethyl (QPE) degrading geneqpeh2and diethyl phthalate (DEP) degrading genedeph1were cloned and expressed. The characteristics of corresponding hydrolases were investigated. The specific activity of recombinant QPEH2 was 0.1 +/- 0.02 U mg(-1)for QPE withk(cat)/K(m)values of 1.8 +/- 0.016 (mM(-1)center dot s(-1)). The specific activity of recombinant DEPH1 was 0.1 +/- 0.02 U mg(-1)for DEP withk(cat)/K(m)values of 0.8 +/- 0.02 (mM(-)(1)center dot s(-)(1)). This work systematically illuminated the metabolic versatility of strain YC-XJ1 via the combination of genomics analysis and laboratory experiments. These results suggested that strain YC-XJ1 with diverse xenobiotics biodegrading capacity was a promising candidate for the bioremediation of polluted sites.
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