Water proton spin saturation affects measured protein backboneN spin relaxation rates
Water proton spin saturation affects measured protein backboneN spin relaxation rates
Publication year: 2011
Source: Journal of Magnetic Resonance, Available online 1 October 2011</br>
Kang*Chen, Nico*Tjandra</br>
Protein backboneN NMR spin relaxation rates are useful in characterizing the protein dynamics and structures. To observe the protein nuclear-spin resonances a pulse sequence has to include a water suppression scheme. There are two commonly employed methods, saturating or dephasing the water spins with pulse field gradients and keeping them unperturbed with flip-back pulses....
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10-02-2011 08:25 AM
[Question from NMRWiki Q&A forum] Impact of deuteration on relaxation rates PROTEIN NMR
Impact of deuteration on relaxation rates PROTEIN NMR
DEAR NMR WIKIERS
IS THEIR ANY NMR EXPERMENT TO KNOW THE IMPACT OF DEUTERATION ON RELAXATION REATES OF C13,N15,H ALFA , H BETA OF DEURATED PROTEIN (RANDOMLY DEUTERTED) Regards
SRI
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06-21-2011 03:40 PM
Elucidating slow binding kinetics of a protein without observable bound resonances by longitudinal relaxation NMR spectroscopy
Elucidating slow binding kinetics of a protein without observable bound resonances by longitudinal relaxation NMR spectroscopy
Abstract We developed a new method to elucidate the binding kinetics kon and koff, and the dissociation constant KD (=koff/kon), of protein-protein interactions without observable bound resonances of the protein of interest due to high molecular weight in a complex with a large target protein. In our method, kon and koff rates are calculated from the analysis of longitudinal relaxation rates of free resonances measured for multiple samples containing different...
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06-06-2011 12:53 AM
Elucidating slow binding kinetics of a protein without observable bound resonances by longitudinal relaxation NMR spectroscopy.
Elucidating slow binding kinetics of a protein without observable bound resonances by longitudinal relaxation NMR spectroscopy.
Elucidating slow binding kinetics of a protein without observable bound resonances by longitudinal relaxation NMR spectroscopy.
J Biomol NMR. 2011 May 28;
Authors: Sugase K
We developed a new method to elucidate the binding kinetics k(on) and k(off), and the dissociation constant K(D) (=k(off)/k(on)), of protein-protein interactions without observable bound resonances of the protein of interest due to high molecular...
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06-01-2011 02:30 PM
Optimum levels of exchangeable protons in perdeuterated proteins for proton detection in MAS solid-state NMR spectroscopy
Optimum levels of exchangeable protons in perdeuterated proteins for proton detection in MAS solid-state NMR spectroscopy
Abstract We present a systematic study of the effect of the level of exchangeable protons on the observed amide proton linewidth obtained in perdeuterated proteins. Decreasing the amount of D2O employed in the crystallization buffer from 90 to 0%, we observe a fourfold increase in linewidth for both 1H and 15N resonances. At the same time, we find a gradual increase in the signal-to-noise ratio (SNR) for 1Hâ??15N correlations in dipolar coupling based experiments for...
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01-09-2011 12:46 PM
[NMR paper] NMR spectroscopic characterization of millisecond protein folding by transverse relaxation dispersion measurements.
NMR spectroscopic characterization of millisecond protein folding by transverse relaxation dispersion measurements.
Related Articles NMR spectroscopic characterization of millisecond protein folding by transverse relaxation dispersion measurements.
J Am Chem Soc. 2005 Sep 28;127(38):13207-12
Authors: Zeeb M, Balbach J
The cold shock protein CspB adopts its native and functional tertiary structure on the millisecond time scale. We employed transverse relaxation NMR methods, which allow a quantitative measurement of the cooperativity of this...
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12-01-2010 06:56 PM
[NMR paper] Longitudinal (1)H relaxation optimization in TROSY NMR spectroscopy.
Longitudinal (1)H relaxation optimization in TROSY NMR spectroscopy.
Related Articles Longitudinal (1)H relaxation optimization in TROSY NMR spectroscopy.
J Am Chem Soc. 2002 Oct 30;124(43):12898-902
Authors: Pervushin K, Vögeli B, Eletsky A
A general method to enhance the sensitivity of the multidimensional NMR experiments performed at high-polarizing magnetic field via the significant reduction of the longitudinal proton relaxation times is described. The method is based on the use of two vast pools of "thermal bath" 1H spins residing on...
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11-24-2010 08:58 PM
[NMR paper] Relaxation of water protons in highly concentrated aqueous protein systems studied by
Relaxation of water protons in highly concentrated aqueous protein systems studied by 1H NMR spectroscopy.
Related Articles Relaxation of water protons in highly concentrated aqueous protein systems studied by 1H NMR spectroscopy.
Z Naturforsch C. 2001 Nov-Dec;56(11-12):1075-81
Authors: Szuminska K, Gutsze A, Kowalczyk A
Concentrated Aqueous Protein Systems, Proton Relaxation Times, Slow Chemical Exchange In this paper we present proton spin-lattice (T1) and spin-spin (T2) relaxation times measured vs. concentration, temperature, pulse...