Molecular Structure and Crystallization Dynamics of Poly(3-hydroxyl alkanoate) with Medium-Chain Length Biosynthesized from Pseudomonas putida

2018 ◽  
Vol 26 (10) ◽  
pp. 4124-4130
Author(s):  
Takahiko Nakaoki ◽  
Takahiro Miura
2012 ◽  
Vol 58 (8) ◽  
pp. 982-989 ◽  
Author(s):  
Parveen K. Sharma ◽  
Jilagamazhi Fu ◽  
Nazim Cicek ◽  
Richard Sparling ◽  
David B. Levin

Six bacteria that synthesize medium-chain-length polyhydroxyalkanoates (mcl-PHAs) were isolated from sewage sludge and hog barn wash and identified as strains of Pseudomonas and Comamonas by 16S rDNA gene sequencing. One isolate, Pseudomonas putida LS46, showed good PHA production (22% of cell dry mass) in glucose medium, and it was selected for further studies. While it is closely related to other P. putida strains (F1, KT2440, BIRD-1, GB-1, S16, and W619), P. putida LS46 was genetically distinct from these other strains on the basis of nucleotide sequence analysis of the cpn60 gene hypervariable region. PHA production was detected as early as 12 h in both nitrogen-limited and nitrogen-excess conditions. The increase in PHA production after 48 h was higher in nitrogen-limited cultures than in nitrogen-excess cultures. Pseudomonas putida LS46 produced mcl-PHAs when cultured with glucose, glycerol, or C6–C14 saturated fatty acids as carbon sources, and mcl-PHAs accounted for 56% of the cell dry mass when cells were batch cultured in medium containing 20 mmol/L octanoate. Although 3-hydroxydecanoate was the major mcl-PHA monomer (58.1–68.8 mol%) in P. putida LS46 cultured in glucose medium, 3-hydroxyoctanoate was the major monomer produced in octanoate medium (88 mol%).


2013 ◽  
Vol 1 (2) ◽  
Author(s):  
P. K. Sharma ◽  
J. Fu ◽  
X. Zhang ◽  
B. W. Fristensky ◽  
K. Davenport ◽  
...  

PLoS ONE ◽  
2015 ◽  
Vol 10 (11) ◽  
pp. e0142322 ◽  
Author(s):  
Jilagamazhi Fu ◽  
Parveen Sharma ◽  
Vic Spicer ◽  
Oleg V. Krokhin ◽  
Xiangli Zhang ◽  
...  

2020 ◽  
pp. 89-114
Author(s):  
Maria Tsampika Manoli ◽  
Natalia Tarazona ◽  
Aranzazu Mato ◽  
Beatriz Maestro ◽  
Jesús M. Sanz ◽  
...  

2009 ◽  
Vol 100 (20) ◽  
pp. 4891-4894 ◽  
Author(s):  
Long Ma ◽  
Haifeng Zhang ◽  
Qian Liu ◽  
Jiong Chen ◽  
Jing Zhang ◽  
...  

2006 ◽  
Vol 72 (1) ◽  
pp. 59-65 ◽  
Author(s):  
Jan B. van Beilen ◽  
Enrico G. Funhoff ◽  
Alexander van Loon ◽  
Andrea Just ◽  
Leo Kaysser ◽  
...  

ABSTRACT Several strains that grow on medium-chain-length alkanes and catalyze interesting hydroxylation and epoxidation reactions do not possess integral membrane nonheme iron alkane hydroxylases. Using PCR, we show that most of these strains possess enzymes related to CYP153A1 and CYP153A6, cytochrome P450 enzymes that were characterized as alkane hydroxylases. A vector for the polycistronic coexpression of individual CYP153 genes with a ferredoxin gene and a ferredoxin reductase gene was constructed. Seven of the 11 CYP153 genes tested allowed Pseudomonas putida GPo12 recombinants to grow well on alkanes, providing evidence that the newly cloned P450s are indeed alkane hydroxylases.


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