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ID 16284
Eprint ID
16284
FullText URL
Thumnail 95_295.pdf 439 KB
Title Alternative
Model studies on the alteration of the phospholipid composition of Staphyloccous aureus in response to the lack of the cell wall
Author
Abstract
In order to elucidate why cardiolipin increases markedly in Staphylococcus aureus cells which lack cell walls, the phase transition temperature of cardiolipin (CL) was determined and compared with that of a major phospholipid, phosphatidylglycerol (PG). CL composed of a fatty acid with a given length was synthesized from dimyristoyl PG and dipalmitoyl PG with the aid of phospholipase D prepared from cabbages and was purified by chromatography. Analysis by differential scanning calorimetry showed that the phase transition temperatures of dimyristoyl PG, tetramyristoyl CL, dipalmitoyl PG and tetrapalmitoyl CL were 25.0, 47.0, 40.5 and 62.2℃, respectively. A mixture of the two phospholipids showed a higher phase transition temperature than PG alone, but lower than CL alone. In the presence of divalent cations, especially Ca(2+), the phase transition temperature of CL increased more than that of PG. These results clearly indicate that cardiolipin can increase the membrane rigidity and suggest that S. aureus may increase cardiolipin content of the membrane to compensate for the loss of mechanical protection due to the lack of the cell wall.
Keywords
Differential scanning calorimetry
Phase transition
Staphylococcus aureus
Phospholipid composition
Cardiolipin
Published Date
1983-04-30
Publication Title
岡山医学会雑誌
Publication Title Alternative
Journal of Okayama Medical Association
Volume
volume95
Issue
issue3-4
Publisher
岡山医学会
Publisher Alternative
Okayama Medical Association
Start Page
295
End Page
303
ISSN
0030-1558
NCID
AN00032489
Content Type
Journal Article
Official Url
https://www.jstage.jst.go.jp/article/joma1947/95/3-4/95_3-4_295/_article/-char/ja/
Related Url
http://www.okayama-u.ac.jp/user/oma/index.html
language
日本語
Copyright Holders
岡山医学会
File Version
publisher
Refereed
True
Eprints Journal Name
joma