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| Document Type: | Article |
|---|---|
| All Authors / Contributors: | JT Henderson; RA Nieman; AL Bieber |
| ISSN: | 0006-3002 |
| OCLC Number: | 114978972 |
| Language Note: | English |
| Awards: |
Abstract:
The 400 MHz 1H-NMR spectrum of myotoxin a from the venom of Crotalus viridis viridis is described. The identification of spin systems in the aromatic region corresponding to the six aromatic residues of myotoxin a was completed using both one- and two-dimensional NMR spectroscopy and the pH dependence of chemical shifts. Assignments of these spin systems to specific residues was possible for the singly occurring amino acids Tyr-1 and Phe-12. Resonances from Tyr-1, His-5 and His-10 were shifted significantly from their random coil values in a pH-dependent manner. These shift perturbations were deemed evidence of a helical arrangement of the amino terminal region which placed these residues in close proximity to each other.
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