Comprehensive Natural Products Chemistry 
Subtitle: Amino-acids, Peptides, Porphyrins and Alkaloids
Contributors: Derek H. R. Barton (Editor); Koji Nakanishi (Editor); Otto Meth-Cohn (Editor); J. W. Kelly (Editor)
Publisher: Pergamon Pr
Published: February 1, 1999
Language: eng
Number of pages: 459
ISBN-13: 9780080431567
First sentence: The biosynthesis of the aromatic amino acids tryptophan (Trp), tyrosine (Tyr), and phenylalanine (Phe) is almost twice as costly in terms of ATP than the synthesis of the remaining -amino acids, requiring 78, 62, and 65 mol of ATP, respectively, to synthesize 1 mol of these residues.