نتایج جستجو برای: guanidine

تعداد نتایج: 3719  

Journal: :Chemical physics letters 2009
Emily A Gibson Zhaochuan Shen Ralph Jimenez

We investigate the equilibrium unfolding of Zn-cytochrome c in guanidine hydrochloride by three-pulse photon echo peak shift (3PEPS) spectroscopy. Unexpectedly, the measurements reveal that inhomogeneous broadening of the sample at the midpoint of the denaturation is larger than that of either native or unfolded states. To interpret this finding, we present simulations of the peak shift for bot...

Journal: :Clinical pharmacology and therapeutics 1968
G Hitzenberger H Kampffmeyer J Conway

Supported in part by Grants SMOI FR-42-06, SMOI FR-42-07, and STI HE-SS26-0S from the National Institutes of Health. Received for publication May 1, 1967. Our experimental design has been divided into three parts: (1) an acute study involving the administration of single doses of the drugs to normal subjects, (2) a six-day study in normal subjects, and (3) a seven-day balance study in hypertens...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 1997
C Paolinelli M Barteri F Boffi F Forastieri M Congiu Gaudiano S Della Longa A C Castellano

We found, by circular dichroism and Raman spectroscopy measurements, that the secondary structure of the native ovalbumin and of its heat-stable form, called S-ovalbumin, is a probe of the structural differences between the two proteins. Small angle X-ray scattering and circular dichroism measurements performed on the two proteins under denaturing conditions, with different concentrations of gu...

Journal: :Biochemistry 2003
Vladislav V Verkhusha Irina M Kuznetsova Olesia V Stepanenko Andrey G Zaraisky Michail M Shavlovsky Konstantin K Turoverov Vladimir N Uversky

Comparative analysis of conformational stabilities was performed for two widely used genetic reporters, EGFP and DsRed, proteins exhibiting similar beta-can folds, but possessing different oligomeric organization and chromophore structures. Two factors affecting protein stability in vitro, such as elevated temperatures and a chaotropic agent guanidine hydrochloride, were studied. In vivo tolera...

Journal: :Chemical communications 2009
Thomas J Groshens Richard A Hollins

Guanidinium borohydride (GBH) was structurally characterized by single-crystal X-ray diffraction and found to release more than 10 wt% H(2) as a fairly pure stream during a self-sustaining thermal decomposition reaction both with and without additives that were identified to reduce the concentration of the main ammonia impurity and control the reaction sustainability.

2012
Charles O. Nwamba Ferdinand C. Chilaka

Inactivation of purified β-Galactosidase was done with GdnHCl in the absence and presence of varying [galactose] at 50°C and at pH 4.5. Lineweaver-Burk plots of initial velocity data, in the presence and absence of guanidine hydrochloride (GdnHCl) and galactose, were used to determine the relevant K(m) and V(max) values, with p-nitrophenyl β-D-galactopyranoside (pNPG) as substrate, S. Plots of ...

Journal: :Acta Biomedica Scientifica (East Siberian Biomedical Journal) 2020

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