Solid-State23Na Nuclear Magnetic Resonance of Sodium Complexes with Crown Ethers, Cryptands, and Naturally Occurring Antibiotic Ionophores:  A Direct Probe to the Sodium-Binding Sites

2000 ◽  
Vol 104 (51) ◽  
pp. 11844-11852 ◽  
Author(s):  
Alan Wong ◽  
Gang Wu
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Crown Ethers ◽  
Binding Sites ◽  
Naturally Occurring ◽  
Sodium Complexes ◽  
Sodium Binding ◽  
Nuclear Magnetic

Carbon-13 nuclear magnetic resonance spectroscopy of naturally occurring substances. Prostaglandins

1973 ◽  
Vol 14 (7) ◽  
pp. 515-518 ◽  
Author(s):  
Gabor Lukacs ◽  
François Piriou ◽  
Stephan D. Gero ◽  
David A. Van Dorp ◽  
Edward W. Hagaman ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Magnetic Resonance Spectroscopy ◽  
Nuclear Magnetic Resonance Spectroscopy ◽  
Resonance Spectroscopy ◽  
Naturally Occurring ◽  
Nuclear Magnetic

A Nuclear Magnetic Resonance Study of the Metal Binding Sites in Bacitracin

1975 ◽  
Vol 53 (12) ◽  
pp. 1250-1254 ◽  
Author(s):  
Roderick E. Wasylishen ◽  
Moira R. Graham
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Metal Binding ◽  
Binding Sites ◽  
Imidazole Ring ◽  
Nuclear Magnetic Resonance Study ◽  
Resonance Spectroscopy ◽  
Metal Binding Sites ◽  
Ph Values ◽  
Nuclear Magnetic

Carbon-13 nuclear magnetic resonance spectroscopy has been used to identify sites in bacitracin which bind Cu2+ and Mn2+. Results are presented which implicate the free carboxyl groups of the aspartic and glutamic acid residues and the imidazole ring of the histidine residue as metal complexation sites between pH 6 and 8. Evidence is presented which also indicates that the thiazoline ring of bacitracin binds Mn2+. Bacitracin does not bind Cu2+ or Mn2+ at pH values of 2.5 or less.

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