Quantitative Bestimmung von Nitroarginin in synthetischen Polypeptiden

✍ Scribed by J. R. Gamper

• Book ID: 102249288
• Publisher: John Wiley and Sons
• Year: 1962
• Tongue: German
• Weight: 476 KB
• Volume: 45
• Category: Article
• ISSN: 0018-019X
• DOI: 10.1002/hlca.19620450507

✦ Synopsis

Abstract

A spectrochemical method for the assay of ω‐nitroarginine in synthetic peptides is described. It is based on the strong difference in absorption of the nitroarginyl residue in the two solvents dimethylformamide (DMF)/0,2N HCl (1:1; v/v) and anhydrous trifluoroacetic acid (TFA). The difference is greatest for nitroarginine and smallest for tryptophan and tyrosine, and most easily measured between the points 271.6 mμ (DMF/0,2N HCl) and 267.6 mμ (TFA).