Zobrazeno 1 - 10
of 93
pro vyhledávání: '"Bogdan E. Chapman"'
Publikováno v:
Journal of Magnetic Resonance. 250:29-36
The 1H NMR signal of the methyl group of sodium acetate is shown to be a triplet in the anisotropic environment of stretched gelatin gel. The multiplet structure of the signal is due to the intra-methyl residual dipolar couplings. The relaxation prop
Publikováno v:
Protoplasma. 252:1181-1185
The morphology and diffusional water permeability (P d) of red blood cells (RBCs) from green sea turtle (GST) (Chelonia mydas) are presented for the first time. The RBCs had an ellipsoidal shape with full-axis lengths (diameters): D = 14.4 μm; d = 1
Autor:
George B. Bacskay, Philip W. Kuchel, Christoph Naumann, Noel S. Hush, Dmitry Shishmarev, Pär Håkansson, Bogdan E. Chapman
Publikováno v:
Journal of Magnetic Resonance. 247:72-80
Urea at ∼12 M in concentrated gelatin gel, that was stretched, gave 1 H and 2 H NMR spectral splitting patterns that varied in a predictable way with changes in the relative proportions of 1 H 2 O and 2 H 2 O in the medium. This required considerat
Autor:
Alexander James, Hongjun Shi, Stuart M. Grieve, Bogdan E. Chapman, Victoria C. O׳Reilly, Richard P. Harvey, Gavin Chapman, Randall S. Johnson, Kylie Lopes Floro, Jost I. Preis, Sally L. Dunwoodie, Duncan B. Sparrow
Publikováno v:
Developmental Biology. 391(1):99-110
Mammalian embryos develop in a low oxygen environment. The transcription factor hypoxia inducible factor 1a (HIF1α) is a key element in the cellular response to hypoxia. Complete deletion of Hif1α from the mouse conceptus causes extensive placental
Autor:
Philip W. Kuchel, Gemma A. Figtree, Bogdan E. Chapman, Max Puckeridge, Stuart M. Grieve, Arthur D. Conigrave
Publikováno v:
Biophysical Journal. 104(8):1676-1684
We examined the response of Na(+),K(+)-ATPase (NKA) to monensin, a Na(+) ionophore, with and without ouabain, an NKA inhibitor, in suspensions of human erythrocytes (red blood cells). A combination of (13)C and (23)Na NMR methods allowed the recordin
Autor:
Sally L. Dunwoodie, Stuart M. Grieve, Gavin Chapman, Roland Stocker, Robert M. Graham, Victoria C. O'Reilly, Duncan B. Sparrow, Michelle Yam, Hongjun Shi, Bogdan E. Chapman, Julie L. M. Moreau, Therese R. Bewes
Publikováno v:
Development. 143(14)
Congenital heart disease (CHD) is an enigma. It is the most common human birth defect and yet, even with the application of modern genetic and genomic technologies, only a minority of cases can be explained genetically. This is because environmental
Publikováno v:
Journal of Inorganic Biochemistry. 115:211-219
The change in the NMR chemical shift of (23)Na(+) induced by the shift reagent TmDOTP was examined under various experimental conditions typical of cells, including changed Na(+), K(+), PO(4)(3-), and Ca(2+) concentrations, pH and temperature. A math
Publikováno v:
Magnetic Resonance in Chemistry. 50:S17-S21
(7)Li NMR z-spectra were recorded from the cation constituted in gelatin gels that were held stretched. The system has been studied previously, but we revisited the disparity that was noted between estimates of some of the relaxation times of spin-st
Publikováno v:
Journal of Magnetic Resonance. 212:40-46
The NMR z -spectra of 7 Li + and 23 Na + in stretched hydrogels contain five minima, or critical values, with a sharp “dagger” on the central dip. The mathematical representation of such z -spectra from spin-3/2 nuclei contains nine distinct (the
Publikováno v:
FEBS Journal. 278:3152-3163
Glutathione (GSH) is an intracellular antioxidant synthesized from glutamate, cysteine and glycine. The human erythrocyte (red blood cell, RBC) requires a continuous supply of glutamate to prevent the limitation of GSH synthesis in the presence of su