| Literature DB >> 623862 |
B D Sykes, W E Hull, G H Snyder.
Abstract
Proton nuclear magnetic resonance (NMR) spin lattice relaxation time (T1) and spin-spin relaxation time (T2) measurements are presented for a number of proteins with molecular weights spanning the range of 6,500-150,000 daltons. These measurements provide experimental evidence for the role of cross-relaxation in 1H NMR T1 measurements in proteins. The relationship between these measurements and the theory recently presented by Kalk and Berendsen is discussed. The results indicate that cross-relaxation dominates the T1 measurements for the larger proteins, even at relatively low resonance frequencies such as 100 MHz.Entities:
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Year: 1978 PMID: 623862 PMCID: PMC1473348 DOI: 10.1016/S0006-3495(78)85514-3
Source DB: PubMed Journal: Biophys J ISSN: 0006-3495 Impact factor: 4.033