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Second-derivative spectroscopy of proteins: Studies on tyrosyl residues

✍ Scribed by Ciro Balestrieri; Giovanni Colonna; Alfonso Giovane; Gaetano Irace; Luigi Servillo

Publisher
Elsevier Science
Year
1980
Tongue
English
Weight
449 KB
Volume
106
Category
Article
ISSN
0003-2697

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✦ Synopsis

Ionization of the phenolic group of N-acetyltyrosynamide has been studied using secondderivative spectroscopy. At pH 12.5 the second-derivative spectrum of the model compound revealed the presence of derivative bands in a spectral region (between 250 and 270 nm) where interference coming from other ultraviolet-absorbing chromophores is negligible. One of these peaks (260-nm peak) has been employed for the determination of tyrosyl groups in mixtures containing the aromatic amino acids.

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