Photoreduction behavior of cytochrome c by zinc porphyrin in lipid media.
To elucidate the role of cardiolipin (CL) on redox behavior of cytochrome c (cyt c (III)), the photoreduction of cyt c using the photosensitization of zinc tetraphenylporphyrin in presence of triethanolamine (TEOA) as a sacrificial electron-donating reagent in various lipid media were studied. The initial rate of cyt c (III) photoreduction in various lipid, CL, l-alpha-phosphatidic acid (PA), dimethyldipalmitoylammonium bromide (DMPA) and Triton X-100 media were 1.0, 0.73, 0.80 and 0.67 micromol dm-3 min-1, respectively. The cyt c (III) photoreduction rate slightly increased by the addition of CL.
Hitotsumatsu
Rika
R
Department of Applied Chemistry, Oita University, Dannoharu 700, Oita 870-1192, Japan.
Amao
Yutaka
Y
D002308:Cardiolipins / Q000737:chemistry; D045304:Cytochromes c / Q000737:chemistry*; D004583:Electrons; D008055:Lipids / Q000737:chemistry*; D008665:Metalloporphyrins / Q000737:chemistry*; D010084:Oxidation-Reduction; D010777:Photochemistry; D017319:Photosensitizing Agents / Q000737:chemistry*
D002308:Cardiolipins; D008055:Lipids; D008665:Metalloporphyrins; D017319:Photosensitizing Agents; C048955:zinc tetraphenylporphyrin; D045304:Cytochromes c