2014
A Pseudomonas putida Strain Genetically Engineered for 1,2,3-Trichloropropane Bioremediation.
GHUFRANA, S.; Martina PAVLOVÁ; M.I. ARIF; C.P. POSTEMA; Jiří DAMBORSKÝ et. al.Základní údaje
Originální název
A Pseudomonas putida Strain Genetically Engineered for 1,2,3-Trichloropropane Bioremediation.
Autoři
GHUFRANA, S.; Martina PAVLOVÁ; M.I. ARIF; C.P. POSTEMA; Jiří DAMBORSKÝ a D.B. JANSSEN
Vydání
Applied and Environmental Microbiology, 2014, 0099-2240
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10600 1.6 Biological sciences
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 3.668
Kód RIV
RIV/00216224:14310/14:00074202
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000341486500032
EID Scopus
2-s2.0-84905904264
Klíčová slova anglicky
1; 2;3-Trichloropropane; biodegradation; Pseudomonas putida MC4
Změněno: 21. 1. 2015 15:41, Ing. Andrea Mikešková
Anotace
V originále
1,2,3-Trichloropropane (TCP) is a toxic compound that is recalcitrant to biodegradation in the environment and attempts to isolate TCP-degrading organisms using enrichment cultivation have failed. A potential biodegradation pathway starts with hydrolytic dehalogenation to 2,3 dichloro-1-propanol (DCP), followed by oxidative metabolism. To obtain a practically applicable TCP-degrading organism, we introduced an engineered haloalkane dehalogenase with improved TCP degradation activity into the DCP-degrading bacterium Pseudomonas putida MC4. For this, the dehalogenase gene (dhaA31) was cloned behind the constitutive dhlA promoter and introduced into the genome of strain MC4 using a transposon delivery system. The transposon-located antibiotic resistance marker was subsequently removed using a resolvase step. Growth of the resulting engineered bacterium P. putida MC4-5222 on TCP was indeed observed, and all organic chlorine was released as chloride. A packed-bed reactor with immobilized cells of strain MC4 5222 degraded >95% of influent TCP (0.33 mM) under continuous flow conditions, with stoichiometric release of inorganic chloride. The results show the use of a laboratory-evolved dehalogenase and genetic engineering for obtaining an effective plasmid-free and stable whole-cell biocatalyst for the aerobic bioremediation of a recalcitrant chlorinated hydrocarbon.
Návaznosti
| GAP503/12/0572, projekt VaV |
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