Adaptational Changes of Fatty Acid Composition and the Physical State of Membrane Lipids Following the Change of Growth Temperature in <i>Yersinia enterocolitica</i>
-
- NAGAMACHI Eiko
- Department of Health and Welfare, Junsei Junior College
-
- SHIBUYA Sei-ichiro
- Department of Microbiology, Okayama University Medical School
-
- HIRAI Yoshikazu
- Department of Microbiology, Okayama University Medical School
-
- MATSUSHITA Osamu
- Department of Microbiology, Okayama University Medical School
-
- TOMOCHIKA Ken-ichi
- Department of Microbiology, Okayama University Medical School
-
- KANEMASA Yasuhiro
- Department of Microbiology, Okayama University Medical School
抄録
Yersinia enterocolitica is capable of growing in a broad range of temperatures from 4 to 45C. How this organism alters its membrane lipids in response to the change of growth temperature is very interesting. The fatty acids of membrane lipids of cells cultured at 5, 15, 25 and 37C were analyzed and the physical states of these membrane lipids were characterized. The major phospholipids of this bacterium were phosphatidylethanolamine, phosphatidylglycerol, cardiolipin, lysophosphatidylglycerol and lysophosphatidylethanolamine. No significant difference in phospholipid composition in response to culture temperatures was observed. It was reported in our previous paper that the major fatty acids of membrane phospholipids of Y. enterocolitica were C15:0, C16:0, C16:1, cyclopropane C17:0 and C18:0. Some differences in the fatty acid composition were, however, observed with the change of culture temperature. When the culture temperature was raised, the saturated and cyclopropane fatty acids substantially increased and the unsaturated ones decreased. A reverse phenomenon was observed when culture temperature was lowered. From the viewpoints of membrane physical state, adaptational changes were analyzed using a nylon microcapsule method. Phase transition in membrane lipids of cells grown at each culture temperature took place in the range of about 5C below and about 10C above the culture temperature. It is, therefore, considered that Y. enterocolitica maintains its membrane rigidity and fluidity in response to growth temperature by changing the membrane fatty acid composition.
収録刊行物
-
- MICROBIOLOGY and IMMUNOLOGY
-
MICROBIOLOGY and IMMUNOLOGY 35 (12), 1085-1093, 1991
Center For Academic Publications Japan
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1570572703127566976
-
- NII論文ID
- 130003483739
-
- ISSN
- 03855600
-
- 本文言語コード
- en
-
- データソース種別
-
- CiNii Articles