[Formation of hemichrome during reaction of hemoglobin with polar phosphatidylcholine derivatives].
Polar phosphatidylcholine derivatives [1-acyl-2-lyso-sn-glycero-3-phosphocholine, 1-alkyl-2-acetyl-sn-glycero-3-phosphocholine (platelet-activating factor), 1-acyl-2-glutaryl-sn-glycero-3-phosphocholine, and 1-acyl-2-azelaoyl-sn-glycero-3-phosphocholine], which are formed in biological structures by enzymatic and free-radical reactions, were studied as effectors of the conversion of methemoglobin and oxyhemoglobin into an oxidized low-spin form referred to as hemichrome. It is shown that all these phosphatidylcholine derivatives act as effectors in the course of the transition of met- and oxyhemoglobin to hemichrome. Among the compounds studied, phosphatidylcholine derivatives containing glutaric and azelaic acids residues have the greatest effect on the rate of hemichrome formation.
Andreiuk
G M
GM
Kisel'
M A
MA
D006420:Hemeproteins / Q000138:chemical synthesis*; D006454:Hemoglobins / Q000737:chemistry*; D007700:Kinetics; D010713:Phosphatidylcholines / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet
D006420:Hemeproteins; D006454:Hemoglobins; D010713:Phosphatidylcholines; C001332:hemichrome