Changes in phospholipids during the cell cycle of myxomycete Physarum polycephalum

FEBS Letters

Polteva, Nina A.¹  Rotaru, Victor K.¹  Evtodienko, Yuri V.¹  Makarov, Peter R.¹ 

[1] Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow region, 142292, Russian Federation

关键词: Cell cycle;    Phospholipid;    Physarum polycephalum;    PC;    phosphatidylcholine;    PE;    phosphatidylethanolamine;    PI;    phosphatidylinositol;    32Pi;    [32P]orthophosphoric acid;   

DOI  :  10.1016/0014-5793(94)00344-0

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

The rate of ³²P_i incorporation into the main membrane phospholipid fractions, i.e. phosphatidylcholine (PC), phosphatidylethanolamine (PE) and phosphatidylinositol (PI), as well as their contents in the cells during synchronous growth of the myxomycete, Physarum polycephalum, have been studied. It has been found that both the phospholipid levels and the rates of ³²P_i incorporation increase during the S phase till the early G₂ phase, remain nearly constant during the G₂ phase and fall to the initial level at the end of the G₂ phase and in mitosis. It has been revealed that the rate of ³²P_i incorporation into PC is very low compared to PE and PI, in spite of the fact that the PC level is the highest. The possible reasons of this phenomenon are discussed.

【 授权许可】

Unknown