Photoreduction behavior of cytochrome c by zinc porphyrin in lipid media.

Abstract

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.

• Authors: Rika Hitotsumatsu, Yutaka Amao
• Journal: Journal of photochemistry and photobiology. B, Biology (J Photochem Photobiol B) Vol. 79 Issue 2 Pg. 89-92 (May 13 2005) ISSN: 1011-1344 [Print] Switzerland
• PMID: 15878113 (Publication Type: Journal Article)

Chemical References

• Cardiolipins
• Lipids
• Metalloporphyrins
• Photosensitizing Agents
• zinc tetraphenylporphyrin
• Cytochromes c

Topics

• Cardiolipins (chemistry)
• Cytochromes c (chemistry)
• Electrons
• Lipids (chemistry)
• Metalloporphyrins (chemistry)
• Oxidation-Reduction
• Photochemistry
• Photosensitizing Agents (chemistry)