By Donald P. Hollis (auth.), Lawrence J. Berliner, Jacques Reuben (eds.)
We are happy to provide this moment quantity of a sequence that has already got a lot curiosity. the appliance of magnetic resonance how to the research of tangible organic structures as contrasted to cell-free samples, even supposing no longer completely novel, as proven via Civan and Shporer in quantity I, has taken on new dimensions with using phosphorus-31 and carbon-13 NMR in learning cells, tissues, and organelles. The purposes of 31 P NMR to such platforms is reviewed during this quantity, whereas carbon-13 should be lined in a later one. using nitroxide spin labels has grown to the purpose the place it now can be thought of a standard organic strategy. The synthesis and functions of a brand new classification of nitroxides is defined during this quantity. ESR spectroscopy of paramagnetic ions is a strong method of learning molecular and structural information, because the bankruptcy by way of Boas, Pilbrow, and Smith at the ESR of copper in quantity 1 has proven. during this quantity the ESR of molybdenum and iron is handled in a similar model. within the first quantity a few points of one H NMR spectroscopy of definite sessions of during this quantity the high-resolu organic macromolecules have been discussed.· tion multinuclear NMR spectra of peptides, together with the physiologically major peptide hormones, are reviewed.
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Additional resources for Biological Magnetic Resonance: Volume 2
Gadian, D. , Hoult, D. , Radda, G. , Seeley, P. , 1976, Proc. Nat!. Acad. USA 73 :4446. Garlick, P. , Radda, G. , Seeley, P. , 1977, Biochem. Biophys. Res. Commun. 74: 1256. 44 Donald P. Hollis Henderson, T. , Costello, A. J. , 1974, Proc. Natl. A cad. Sci. USA 71: 2487. Hillis, L. , 1977a, N. Engl. J. Med. 296 :1034. Hillis, L. , 1977b, N. Engl. J. Med. 296:1093. Hollis, D. , Nunnally, R. , Jacobus, W. , and Taylor, G. , 1977, Biochem. Biophys. Res. 75:1086. Hollis, D. , Nunnally, R. , Taylor, G.
1976) used 31p NMR as a new approach to obtain information concerning the compartmentation of Pi in muscle tissue and variations in phosphate metabolism between different muscle types, namely, red and white muscle. The line width of the Pi resonance is always observed to be larger than that of phosphocreatine. Since the maximum contribution of magnetic field inhomogeneity is determined by the phosphocreatine line width, this observation suggests that either the Pi is present in different environments of differing pH or that a powerful relaxation mechanism contributes to the Pi transverse relaxation time, T2, while not affecting the T2 of phosphocreatine.
0 Figure 12. The top spectrum was measured on a suspension of ascites cells under the same conditions as the middle spectrum of Figure 6. The addition of deoxyglucose results in the disappearance of ATP and the appearance of AMP (peak W) and of peak Z, which is attributed to deoxyglucose-6-phosphate. Both spectra consisted of 4000 accumulations. From Navon et al. (1977a). amounts of these two ATP species were dependent upon the DPG concentration reflecting the competition for hemoglobin between DPG and ATP.
Biological Magnetic Resonance: Volume 2 by Donald P. Hollis (auth.), Lawrence J. Berliner, Jacques Reuben (eds.)