Properties of the manganese(II) binding site in ternary complexes of manganese.cntdot.ADP and manganese.cntdot.ATP with chloroplast coupling factor 1: magnetic field dependence of solvent proton and deuterium NMR relaxation rates

Biochemistry ◽  
1989 ◽  
Vol 28 (9) ◽  
pp. 3664-3669 ◽  
Author(s):  
Alice E. Haddy ◽  
Wayne D. Frasch ◽  
Robert R. Sharp
Keyword(s):  
Magnetic Field ◽  
Field Dependence ◽  
Magnetic Field Dependence ◽  
Nmr Relaxation ◽  
Coupling Factor ◽  
Ternary Complexes ◽  
Relaxation Rates ◽  
Chloroplast Coupling Factor ◽  
Chloroplast Coupling Factor 1 ◽  
Solvent Proton

Magnetic-field dependence of planar copper and oxygen spin-lattice relaxation rates in the superconducting state ofYBa2Cu3O7

1993 ◽  
Vol 47 (14) ◽  
pp. 9155-9157 ◽  
Author(s):  
J. A. Martindale ◽  
S. E. Barrett ◽  
K. E. O’Hara ◽  
C. P. Slichter ◽  
W. C. Lee ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Dependence ◽  
Superconducting State ◽  
Magnetic Field Dependence ◽  
Lattice Relaxation ◽  
Spin Lattice Relaxation ◽  
Relaxation Rates ◽  
Spin Lattice

Proton Spin-Relaxation Induced by Localized Spin-Dynamical Coupling in Proteins And in Other Imperfectly Packed Solids

2000 ◽  
Vol 651 ◽  
Author(s):  
J.-P. Korb ◽  
A. Van-Quynh ◽  
R. G. Bryant
Keyword(s):  
Magnetic Field ◽  
Field Dependence ◽  
Magnetic Field Dependence ◽  
Dipolar Coupling ◽  
Biological Tissues ◽  
Proton Spin ◽  
Spin Lattice Relaxation ◽  
Relaxation Rates ◽  
Polymer Backbone ◽  
The Magnetic Field

AbstractThe magnetic field dependence of 1H spin lattice relaxation rates in noncrystalline macromolecular solids including engineering polymers, proteins, and biological tissues is described by a power law, 1/T1 = Aω0-b, where ω0 is the Larmor frequency, A and b are constants. We show that the magnetic field dependence of the proton 1/T1 may be quantitatively related to structural fluctuations along the backbone that modulate proton-proton dipolar couplings. The parameters A and b are related to the dipolar coupling strength, the energy for the highest vibrational frequency in the polymer backbone, and the fractal dimensionality of the proton spatial distribution.

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