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31P nuclear magnetic resonance spectroscopy of the phosphorylated tetrapeptide GlyGlyAspAla

✍ Scribed by Heinz Schlemmer; Gerhard M. Sontheimer; Hans Robert Kalbitzer

Publisher: John Wiley and Sons
Year: 1988
Tongue: English
Weight: 300 KB
Volume: 26
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1260260315

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✦ Synopsis

The model peptide glycylglycylaspartylalanine was phosphorylated in the NMR sample tube and characterized by 31P NMR spectroscopy. The pK,, value of the acyl phosphate group in glycylglycyl(/l-aspartyl phosphate)alanine was determined to be 4.6 and the chemical shift was -6.45 ppm at low pH (1.5) and -1.27 ppm at high pH (8.0).

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