[Effect of lipids on CO recombination with ferrocytochrome P-450]

Using the flash photolysis technique the kinetics of recombination of carbon monoxide with ferrocytochrome P-450 LM-2 was investigated. Ferrocytochrome P-450 was incorporated into liposomes prepared from different lipids: from microsomal lipids, phosphatidylcholine from egg yolk, dipalmitoylphosphatidylcholine. It was found that the activity and structure of ferrocytochrome P-450 conformers is affected by the lipid microenvironment. The kinetics of the CO-binding is affected also by the nature of lipids.