[Effect of phosphatidylglycerol on the incorporation process of cytochrome P-450 in liposomes from dimyristoylphosphatidylcholine].
Using the electron paramagnetic resonance (EPR) method with spin-labeled fatty acids and gel-penetrating chromatography, the effect of phosphatidylglycerol on cytochrome P-450 incorporation into liposomes from dimyristoylphosphatidylcholine was investigated. An addition of phosphatidylglycerol caused an increase in the protein content of the proteoliposomes as well as their accelerated formation at temperatures below and above the liposome phase transition temperature (Ts). The dependence of the proteoliposome formation rate on the phosphatidylglycerol content in the liposome mixture is described by complex kinetics with a maximum in the presence of 10 mol.% of the negatively charged phospholipid. The mechanism of proteoliposome formation is discussed in terms of asymmetric distribution and phase state of the phospholipids in the original vesicles.
Akhrem
A A
AA
Gurinovich
N A
NA
Kisel'
M A
MA
Kiselev
P A
PA
D000818:Animals; D003577:Cytochrome P-450 Enzyme System / Q000378:metabolism*; D004134:Dimyristoylphosphatidylcholine / Q000378:metabolism*; D004578:Electron Spin Resonance Spectroscopy; D007700:Kinetics; D008081:Liposomes / Q000378:metabolism*; D008862:Microsomes, Liver / Q000201:enzymology*; D010715:Phosphatidylglycerols / Q000494:pharmacology*; D011817:Rabbits; D013113:Spin Labels; D013696:Temperature
D008081:Liposomes; D010715:Phosphatidylglycerols; D013113:Spin Labels; D003577:Cytochrome P-450 Enzyme System; D004134:Dimyristoylphosphatidylcholine
Vliianie fosfatidilglitserina na protsess vstraivaniia tsitokhroma p-450 v liposomy iz dimiristoilfosfatidilkholina.