The mutual interference between the second-derivative bands of tyrosine and tryptophan in proteins has been evaluated in terms of the ratio r between two peak-to-peak distances. The r values have been found to be well related, although not linearly, to the tyrosine/ tryptophan ratio in both model co
Rapid simultaneous determination of tryptophan and tyrosine in synthetic peptides by derivative spectroscopy
β Scribed by Jacopo Bertini; Carlo Mannucci; Roberto Noferini; Andrea Perico; Paolo Rovero
- Publisher
- John Wiley and Sons
- Year
- 1993
- Tongue
- English
- Weight
- 411 KB
- Volume
- 82
- Category
- Article
- ISSN
- 0022-3549
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## Abstract __Background__: To explore the clinical significance of serum tyrosine (Tyr) and tryptophan (Trp) in patients with lung cancer, we used a simple and efficient method of highβperformance liquid chromatography with fluorescence detection (HPLCβFD) that simultaneously measured serum Trp an