Long-distance spin-spin interactions with iron-sulphur clusters as observed by e.p.r. spectroscopy.
نویسندگان
چکیده
Long-distance spin-spin interactions with iron-sulphur clusters as observed by e.p.r. spectroscopy Richard Cammack*$, Ruth Williams*, Bruno Guigliarellit, Claude Moret and Patrick Bertrandt *Centre for the Study of Metals in Biology and Medicine, King’s College, London W8 7AH, U.K. and tLaboratoire d’Electronique des Milieux Condenses, Universite de Provence, Centre de SaintJerhme, Marseille, Cedex 13, France
منابع مشابه
Electron-spin-resonance/electron-paramagnetic-resonance spectroscopy of iron-sulphur enzymes.
The conjugated iron-sulphur proteins are enzymes that contain iron-sulphur clusters, which are paramagnetic in certain oxidation states. Numerous enzymes of this type have been isolated (Palmer, 1975; Cammack, 1979; Yoch & Carithers, 1979), and whole books have been devoted to them (Lovenberg, 1977; Spiro, 1982). Most of them (aconitase being an exception) are oxidoreductases. By using e.p.r. (...
متن کاملIntramitochondrial positions of ubiquinone and iron-sulphur centres determined by dipolar interactions with paramagnetic ions.
E.p.r. (electron-paramagnetic-resonance) spectra of ubisemiquinone (QH) organic radicals and all of the known iron-sulphur centres were studied in normal and 'nickle-plated' pigeon heart mitochondria, submitochondrial particles and submitochondrial particles from which succinate dehydrogenase had been removed. Incubation of pigeon heart mitochondria, submitochondrial particles or succinate dehy...
متن کاملElectron-paramagnetic-resonance spectroscopy studies of iron-sulphur centres of submitochondrial particles from iron- and sulphur-deficient. Candida utilis.
1. Measurements were made at 12 degrees K of the electron-paramagnetic-resonance (e.p.r.) spectra of submitochondrial particles from Candida utilis cells grown under conditions that alter the amount of the mitochondrial NADH dehydrogenase (EC 1.6.99.3). 2. Iron-limited growth decreases the extent of iron-sulphur e.p.r. signals to undetectable values that are less than 1 percent of those normall...
متن کاملStructural information from orientationally selective DEER spectroscopy.
Double electron-electron resonance (DEER) spectroscopy can determine, from measurement of the dipolar interaction, the distance and orientation between two paramagnetic centres in systems lacking long-range order such as powders or frozen solution samples. In spin systems with considerable anisotropy, the microwave pulses excite only a fraction of the electron paramagnetic resonance (EPR) spect...
متن کاملPhotoelectron Spectroscopy and Density Functional Theory Studies of Iron Sulfur (FeS)m- (m = 2-8) Cluster Anions: Coexisting Multiple Spin States.
Iron sulfur cluster anions (FeS)m- (m = 2-8) are studied by photoelectron spectroscopy (PES) at 3.492 eV (355 nm) and 4.661 eV (266 nm) photon energies, and by density functional theory (DFT) calculations. The most probable structures and ground state spin multiplicities for (FeS)m- (m = 2-8) clusters are tentatively assigned through a comparison of their theoretical and experiment first vertic...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Biochemical Society transactions
دوره 22 3 شماره
صفحات -
تاریخ انتشار 1994