Aluminum and boron nuclear quadrupole resonance with a direct current superconducting quantum interference device

1990 ◽  
Vol 93 (11) ◽  
pp. 7639-7646 ◽  
Author(s):  
C. Connor ◽  
J. Chang ◽  
A. Pines
Keyword(s):  
Nuclear Quadrupole Resonance ◽  
Direct Current ◽  
Quantum Interference ◽  
Superconducting Quantum Interference Device ◽  
Superconducting Quantum Interference ◽  
Quadrupole Resonance ◽  
Nuclear Quadrupole

Nitrogen-14 SQUID NQR of L-Ala-L-His and of Serine

1994 ◽  
Vol 49 (12) ◽  
pp. 1188-1192 ◽  
Author(s):  
Ulrike Werner-Zwanziger ◽  
Marcia Ziegeweid ◽  
Bruce Black ◽  
Alexander Pines
Keyword(s):  
Amino Acids ◽  
Nuclear Quadrupole Resonance ◽  
Intermolecular Interactions ◽  
Quantum Interference ◽  
Amino Nitrogen ◽  
Resonance Spectroscopy ◽  
Superconducting Quantum Interference Device ◽  
Small Peptides ◽  
Quadrupole Resonance ◽  
Nuclear Quadrupole

Abstract14N nuclear quadrupole resonance spectroscopy, detected with a Superconducting Quantum Interference Device, makes possible the study of nitrogen environments in amino acids and small peptides. The present experiments characterize: 1) the effects of intermolecular interactions upon the amino nitrogen of serine upon cocrystallization of the stereoisomers in a range of concentrations; 2) the changes of the amino and imidazole nitrogen environments brought about by combining L-Alanine and L-Histidine into the dipeptide L-Ala-L-His.

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