Identification of neutral and anionic 8α-substituted flavin semiquinones in flavoproteins by electron spin resonance spectroscopy

Electron paramagnetic resonance spectral studies of protein-bound 8α-substituted FMN neutral semiquinones (in a complex with Azotobacter apoflavodoxin) show peak-to-peak linewidths (~ 20–23 G) similar to those of normal flavoenzymes which form neutral semiquinones. The anionic form of the 8α-substit...

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Veröffentlicht in:	Archives of biochemistry and biophysics 1981-04, Vol.208 (1), p.69-74
Hauptverfasser:	Edmondson, Dale E., Ackrell, Brian A.C., Kearney, Edna B.
Format:	Artikel
Sprache:	eng
Schlagworte:	Anions Azotobacter - analysis Bacterial Proteins - analysis Benzoquinones Electron Spin Resonance Spectroscopy Flavins - analysis Flavoproteins - analysis Free Radicals - analysis Hydrogen-Ion Concentration Quinones - analysis
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