Osmotic behaviour of Acholeplasma laidlawii B cells with membrane lipids in liquid-crystalline and gel state

The osmotic behaviour of Acholeplasma laidlawii B cells was investigated with combined spectrophotometric and enzymatic measurements. The conclusion could be drawn that this osmotic behaviour depends largely on the physical state of the membrane lipids. When part of the membrane lipids is in the liq...

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Published inBiochimica et biophysica acta Vol. 394; no. 3; pp. 463 - 469
Main Authors van Zoelen, E J, van der Neut-Kok, E C, de Gier, J, van Deenen, L L
Format Journal Article
LanguageEnglish
Published Netherlands 03.07.1975
Subjects
Acholeplasma laidlawii
Cell Membrane Permeability
Chemical Phenomena
Chemistry, Physical
Dose-Response Relationship, Drug
Glucosephosphate Dehydrogenase - analysis
Lipids - physiology
Spectrophotometry
Sucrose - pharmacology
Temperature
Water-Electrolyte Balance
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Summary:The osmotic behaviour of Acholeplasma laidlawii B cells was investigated with combined spectrophotometric and enzymatic measurements. The conclusion could be drawn that this osmotic behaviour depends largely on the physical state of the membrane lipids. When part of the membrane lipids is in the liquid-crystalline phase the cell is able to swell and behaves as a good osmometer. However, when the membrane lipid is in the gel phase, the cell is unable to swell and the change in absorbance of the cell suspension is then completely due to lysis.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:0006-3002
DOI:10.1016/0005-2736(75)90297-7