作者:W. Augustyniak、R. Ka?ski、M. Ka?ska
DOI:10.1002/jlcr.483
日期:2001.7
Two labeled isotopomers of L-tyrosine, L-Tyr, have been synthesized using specific properties of the enzymes phenylanine ammonia lyase, PAL, and L-phenylalanine hydroxylase. In an intermediate step [1-14C]-, and [2-14C]-L-phenylalanine, L-Phe, have been obtained from [1-14C]-, and [2-14C]cinnamic acid, prepared from potassium [14C]cyanate or [2-14C]malonic acid, and by addition of ammonia in the presence of enzyme PAL. The labeled isotopomers of L-Phe have been converted into [1-14C]-, and [2-14C]-L-Tyr using the enzyme L-phenylalanine hydroxylase. Copyright © 2001 John Wiley & Sons, Ltd.
利用苯丙氨酸氨裂解酶(PAL)和 L-苯丙氨酸羟化酶的特殊性质,合成了两种标记的 L-酪氨酸(L-Tyr)同位素。在中间步骤中,[1-14C]-和[2-14C]-L-苯丙氨酸(L-Phe)是从[1-14C]-和[2-14C]肉桂酸中获得的,[1-14C]肉桂酸是从[14C]氰酸钾或[2-14C]丙二酸中制备的,并在酶 PAL 的存在下通过添加氨获得。用 L-苯丙氨酸羟化酶将标记的 L-Phe同位素转化为 [1-14C]- 和 [2-14C]-L-Tyr 。Copyright © 2001 John Wiley & Sons, Ltd. All Rights Reserved.