Yavari, Issa and Roberts, John D. (1978) Differential Rates of Proton Exchange for the Guanidinium Nitrogens of L-Arginine Determined by Natural-Abundance Nitrogen-15 Nuclear Magnetic Resonance Spectroscopy. Biochemical and Biophysical Research Communications, 83 (2). pp. 635-640. ISSN 0006-291X. https://resolver.caltech.edu/CaltechAUTHORS:20151023-101624893
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Abstract
Differential rates of N-H proton-exchange reactions have been determined for the guanidinium nitrogens of l-arginine, 1̂, in the pH range of 0.5 to 11.5 by natural-abundance nitrogen-15 NMR spectroscopy. Base-catalyzed N-H proton exchange of the -NH- group is found to be two times faster than for the guanidino -NH_2 groups. The results can be rationalized by consideration of the contributions of various valence-bond structures to the resonance hybrid of 1.
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| Additional Information: | © 1978 Academic Press, Inc. Received May 26, 1978. Supported by the Public Health Service, Research Grant No. GM-11072 from the Division of General Medical Sciences, and by the National Science Foundation. | |||||||||
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| Issue or Number: | 2 | |||||||||
| Record Number: | CaltechAUTHORS:20151023-101624893 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20151023-101624893 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 61481 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Ruth Sustaita | |||||||||
| Deposited On: | 26 Oct 2015 21:32 | |||||||||
| Last Modified: | 03 Oct 2019 09:08 |
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