SOLVENT AND TEMPERATURE-DEPENDENCE OF THE HYPERFINE COUPLING-CONSTANTS IN CTPO

被引:15
作者
BALES, BL
BLUM, RA
MARENO, D
PERIC, M
HALPERN, HJ
机构
[1] CALIF STATE UNIV NORTHRIDGE,CTR CANC & DEV BIOL,NORTHRIDGE,CA 91330
[2] UNIV CHICAGO,DEPT RADIAT & CELLULAR ONCOL,CHICAGO,IL 60637
来源
JOURNAL OF MAGNETIC RESONANCE | 1992年 / 98卷 / 02期
基金
美国国家卫生研究院;
关键词
D O I
10.1016/0022-2364(92)90134-S
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
The hyperfine coupling constant to the proton in the 4 position of the nitroxide spin label 4-protio-3-carbamoyl-2,2,5,5-tetraperdeuteromethyl-3-pyrrohne-1-yloxy (mHCTPO) has been measured in seven solvents of varying polarities at 259 and 323 K. All of the proton hyperfine coupling constants in 3-carbamoyl-2,2,5,5,-tetramethyl-3-pyrroline-1-yloxyl (CTPO) have been measured by NMR at 500 MHz in CD3OD at 307 and 323 K. These results together with corrected results in the literature have been fitted to an empirical equation which yields accurate values of the hyperfine coupling constants from measured values of the nitrogen hyperfine coupling constant and the temperature. Gaussian linewidths, necessary to correct for inhomogeneous broadening in unresolved spin-label spectra, may be calculated from an empirical equation involving the nitrogen hyperfine coupling constant and the temperature. © 1992.
引用
收藏
页码:299 / 307
页数:9
相关论文
共 15 条
[1]   TRANSMEMBRANE PROTEIN-STRUCTURE - SPIN LABELING OF BACTERIORHODOPSIN MUTANTS [J].
ALTENBACH, C ;
MARTI, T ;
KHORANA, HG ;
HUBBELL, WL .
SCIENCE, 1990, 248 (4959) :1088-1092
[2]  
BALES BL, 1984, J CHEM PHYS, V80, P2997, DOI 10.1063/1.447134
[3]  
BALES BL, 1989, BIOL MAGN RESON, P77
[4]  
BRIERE R, 1967, B SOC CHIM FR, P4479
[5]   TEMPERATURE-DEPENDENT HYPERFINE COUPLING-CONSTANTS IN ELECTRON-SPIN RESONANCE .6. PLANAR AND NON-PLANAR NITROXIDE RADICALS [J].
BULLOCK, AT ;
HOWARD, CB .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1980, 76 :1296-1300
[6]   SELECTIVE ISOTOPIC LABELING OF A NITROXIDE SPIN LABEL TO ENHANCE SENSITIVITY FOR T2 OXYMETRY [J].
HALPERN, HJ ;
PERIC, M ;
NGUYEN, TD ;
SPENCER, DP ;
TEICHER, BA ;
LIN, YJ ;
BOWMAN, MK .
JOURNAL OF MAGNETIC RESONANCE, 1990, 90 (01) :40-51
[7]   SIMULATION OF ELECTRON-SPIN-RESONANCE SPECTRA OF THE OXYGEN-SENSITIVE SPIN-LABEL PROBE CTPO [J].
HYDE, JS ;
SUBCZYNSKI, WK .
JOURNAL OF MAGNETIC RESONANCE, 1984, 56 (01) :125-130
[8]   NITROGEN HYPERFINE SPLITTING CONSTANT OF NITROXIDE FUNCTIONAL-GROUP AS A SOLVENT POLARITY PARAMETER - RELATIVE IMPORTANCE FOR A SOLVENT POLARITY PARAMETER OF ITS BEING A CYBOTACTIC PROBE VS ITS BEING A MODEL PROCESS [J].
KNAUER, BR ;
NAPIER, JJ .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1976, 98 (15) :4395-4400
[9]   NMR SPECTRA OF SOME NITROXIDE RADICALS [J].
KREILICK, RW .
JOURNAL OF CHEMICAL PHYSICS, 1966, 45 (06) :1922-&
[10]   NMR STUDIES OF A SERIES OF ALIPHATIC NITROXIDE RADICALS [J].
KREILICK, RW .
JOURNAL OF CHEMICAL PHYSICS, 1967, 46 (11) :4260-&