Resonance Raman spectroscopy of cytochrome bc1 complexes from Rhodospirillum rubrum: initial characterization and reductive titrations.
Resonance Raman spectra of bc1 complexes from Rhodospirillum rubrum have been obtained. Various resonance conditions and the stoichiometric redox titration of the complex were used to isolate and identify the contributions of the heme c1 and heme b active sites to the observed spectra. The complex was found to partially photoreduce when exposed to laser excitation.
Hobbs
D D
DD
Department of Chemistry, University of New Mexico, Albuquerque.
Kriauciunas
A
A
Güner
S
S
Knaff
D B
DB
Ondrias
M R
MR
D001205:Ascorbic Acid / Q000494:pharmacology; D004227:Dithionite / Q000494:pharmacology; D004563:Electrochemistry; D004579:Electron Transport; D014450:Electron Transport Complex III / Q000378:metabolism*; D005292:Ferricyanides / Q000494:pharmacology; D006418:Heme / Q000378:metabolism; D010084:Oxidation-Reduction; D010777:Photochemistry; D012247:Rhodospirillum rubrum / Q000032:analysis*; D013053:Spectrophotometry; D013059:Spectrum Analysis, Raman
D005292:Ferricyanides; C007931:hexacyanoferrate III; D004227:Dithionite; D006418:Heme; D014450:Electron Transport Complex III; D001205:Ascorbic Acid