Results 261 to 270 of about 30,422 (298)
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Spin-label studies of tropomyosin
Biochemistry, 1975Studies are reported on nitroxide spin-labeled tropomyosin. The labels attach to sulfhydryl groups and to amino groups. The amino spins are highly mobile, the sulfhydryl much less so. Spin count studies show an average of approximately 0.5 labeled sulfhydryl/tropomyosin molecule and only approximately 0.15 labeled amino group/molecule.
Y Y, Chao, A, Holtzer
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Physics and chemistry of spin labels
Quarterly Reviews of Biophysics, 1970Biological systems provide the physical chemist with an abundance of interesting, challenging and significant problems. One example is the problem of the molecular basis of co-operative or allosteric interactions between distant ligand or substrate binding sites in hemoglobin and in enzymes.
H M, McConnell, B G, McFarland
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Biochemical and Biophysical Research Communications, 1972
Summary The facultative yeast cells have been spin-labeled biosynthetically with the 12-nitroxide stearic acid label under aerobic as well as anaerobic conditions. ESR spectra of the aerobic cells were different from those of the anaerobic cells. The signal intensity of the aerobic cells decreased upon removal of oxygen from the culture.
M, Nakamura, S I, Onishi
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Summary The facultative yeast cells have been spin-labeled biosynthetically with the 12-nitroxide stearic acid label under aerobic as well as anaerobic conditions. ESR spectra of the aerobic cells were different from those of the anaerobic cells. The signal intensity of the aerobic cells decreased upon removal of oxygen from the culture.
M, Nakamura, S I, Onishi
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Recent developments in spin labelling
Physics in Medicine and Biology, 1998Enhancements in spin-lattice relaxation rates of spin-labelled systems are considered both in terms of recent advances in nonlinear EPR methodology and in terms of the structural and dynamic biophysical information that can be obtained from such measurements at the molecular level.
Marsh, D., Livshits, V.
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Spin-labeling of immunoglobulin carbohydrates
Immunochemistry, 1978Abstract The oligosaccharide units of different immunoglobulins were spin-labeled after periodate oxidation. Electron spin resonance spectra of the spin-labeled immunoglobulins point out on the marked freedom of rotation of bound spin-label. Addition of antigen to the spin-labeled anti-human IgG antibodies does not result in any change of spectra.
R S, Nezlin +3 more
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[18] Spin labeling in enzymology: Spin-labeled enzymes and proteins
1978Publisher Summary This chapter introduces nitroxide spin labels, basic magnetic resonance theory, and the instrumental aspects of electron spin resonance (ESR) spectroscopy that one encounters in most spin-labeling applications. The chapter also describes the methods of gaining structure-conformation information about a protein, the types of ...
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