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Sensitive change of iso-branched fatty acid (iso-15:0) in Bacillus pumilus PAMC 23174 in response to environmental changes

Cited 2 time in scopus
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Title
Sensitive change of iso-branched fatty acid (iso-15:0) in Bacillus pumilus PAMC 23174 in response to environmental changes
Other Titles
환경변화에 따른 Bacillus pumilus PAMC 23174의 지방산 민감도 변화
Authors
Yi, Da-Hye
Yang, Yung-Hun
Lee, Yoo Kyung
Jung, Ji Young
Park, Sung-Hee
Kim, Yun-Gon
Shashi Kant Bhatia
Kim, Jung-Ho
Seo, Hyung Min
Ganesan Sathiyanarayanan
Keywords
Adaptation; Bacillus pumilus; Climate change; FAME; GC?MS; Polar bacteria
Issue Date
2016
Citation
Yi, Da-Hye, et al. 2016. "Sensitive change of iso-branched fatty acid (iso-15:0) in Bacillus pumilus PAMC 23174 in response to environmental changes". BIOPROCESS AND BIOSYSTEMS ENGINEERING, 39(1): 159-167.
Abstract
In this study, the environmental adaptive metabolic processes were investigated using a psychrotrophic polar bacterium Bacillus pumilus PAMC 23174 in response to various temperatures and nutrients, especially in regard to the synthesis of fatty acids. Fatty acid methyl ester analysis was performed using gas chromatography?mass spectrometry and we found that a sensitive changes in iso-branched fatty acid (iso-15:0) synthesis occurred when adjusting the nutritional ratio of branched chain fatty acids (anteiso/iso) with different temperatures, resulting in a change in the balance of anteiso- and iso-form fatty acids. We also observed that this Arctic bacterium preferred amino acid leucine for the synthesis of fatty acids. The increased and decreased synthesis of iso-form fatty acids in response to different temperatures and leucine preference, changes the fatty acid ratio in bacteria, which further affects the membrane fluidity and it is also directly correlated with survival of bacteria in an extreme environment. Hence, this study suggests that B. pumilus PAMC 23174 is a potential model organism for the analysis of the unique ecological adaptations of polar bacteria in changing and the extreme environments.
URI
http://repository.kopri.re.kr/handle/201206/7429
DOI
http://dx.doi.org/10.1007/s00449-015-1500-x
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