Alteration of fatty acid chain length ofChlamydomonas reinhardtiiby simultaneous expression of medium-chain-specific thioesterase and acyl carrier protein

2017 ◽  
Vol 65 (1) ◽  
pp. 94-99 ◽  
Author(s):  
Yu Inaba ◽  
Kenji Nakahigashi ◽  
Takuro Ito ◽  
Masaru Tomita
2021 ◽  
Author(s):  
fangxiang hu ◽  
Weijie Cai ◽  
Junzhang Lin ◽  
Weidong Wang ◽  
Shuang Li

Abstract BackgroundSurfactin, a representative biosurfactant of popeptide mainly produced by Bacillus subtilis, consists of a cyclic heptapeptide linked to a β-hydroxy fatty acid chain. The functional activity of surfactin is closely related to the length and isomerism of the fatty acid chain. ResultsIn this study, the plant medium-chain acyl-carrier protein (ACP) thioesterase (BTE) from Umbellularia californica was overexpressed in a recombinant surfactin production strain based on B. subtilis 168. As a result, the surfactin yield after 24 h of cultivation improved by 23%, and the production rate increased from 0.112 to 0.177 g/L/h. The isoforms identified by RP-HPLC and GC-MS showed that the proportion of nC14-surfactin increased 6.4 times compared to the control strain. A comparison of further properties revealed that the product with more nC14-surfactin had higher surface activity and better performance in oil-washing. Finally, the product with more nC14-surfactin isoform had a higher hydrocarbon-emulsification index, and it increased the water-wettability of the oil-saturated silicate surface. ConclusionThe obtained results provide an original approach to modify the fatty acid chain of surfactin and further demonstrate the importance of the length and isomerism of the β-hydroxy fatty acid chain for the MEOR application of surfactin.


2001 ◽  
Vol 120 (5) ◽  
pp. A710-A710
Author(s):  
S LAL ◽  
J MCLAUGHLIN ◽  
O NIAZ ◽  
G DOCKRAY ◽  
A VARRO ◽  
...  

1983 ◽  
Vol 31 (12) ◽  
pp. 4213-4219 ◽  
Author(s):  
HIROSHI NAKAHARA ◽  
SATOSHI OKADA ◽  
KENSHU MOCHIDA ◽  
HIDENOBU OHMORI ◽  
MASAICHIRO MASU

Pancreatology ◽  
2020 ◽  
Vol 20 ◽  
pp. S41
Author(s):  
U. Mahajan ◽  
G. Adam ◽  
A. Alnatsha ◽  
Q. Li ◽  
G. Beyer ◽  
...  

Biochemistry ◽  
1993 ◽  
Vol 32 (1) ◽  
pp. 290-297 ◽  
Author(s):  
Dalian Lu ◽  
Dev Singh ◽  
Michael R. Morrow ◽  
Chris W. M. Grant

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