[Mechanisms of the structural changes in erythrocyte membranes under the action of a shift in pH].
The effect of pH shifts (5--10) on erythrocyte "ghosts" has been studied using the IR spectroscopy. The process of regulation has been shown to take place within pH 7.15--8 range involving both protein (transition testified by absorption band changes 1520, 1540, 1635, 1645, 1585, 1696, 3305 CM-1) and lipid membrane components testified by absorption band splits 1745, 1470, 1380, 720 AND 1242 cm-1. The transition from a lesser to a higher regulating state of membrane structure happens unevenly, since the above changes take place within the narrow pH 7.15--8 interval, near the homeostase limit, being never observed at pH 5--7.15 or 8--10. It is supposed that the increase in regulation of both protein, phospholipid and lipid membrane fields is of phasic nature which presumably constitutes the basis for pH action mechanism as a regulation factor.
D000818:Animals; D004910:Erythrocyte Membrane / Q000648:ultrastructure*; D004912:Erythrocytes / Q000648:ultrastructure*; D006863:Hydrogen-Ion Concentration; D008563:Membrane Lipids / Q000032:analysis; D008565:Membrane Proteins / Q000032:analysis; D010743:Phospholipids / Q000032:analysis; D011817:Rabbits; D013055:Spectrophotometry, Infrared
D008563:Membrane Lipids; D008565:Membrane Proteins; D010743:Phospholipids
Nekotorye mekhanizmy strukturnykh izmeneniĭ éritrotsitarnykh membran pri deĭstvii sdviga pH.