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    • 9. 发明授权
    • Stabilization of L-phenylalanine ammonia-lyase enzyme
    • L-苯丙氨酸氨裂解酶的稳定化
    • US4562151A
    • 1985-12-31
    • US529434
    • 1983-09-06
    • Ganesh M. Kishore
    • Ganesh M. Kishore
    • C12N9/88C12N9/96C12N11/10C12P13/22C12R1/645C12R1/91C12P13/00C12P13/06
    • C12N11/10C12N9/88C12N9/96C12P13/222
    • A process for the synthesis of L-phenylalanines and analogues thereof from trans-cinnamate, ring substituted trans-cinnamates or various acrylate derivatives and ammonia or an ammonia donor in the presence of L-phenylalanine ammonia-lyase enzyme and a desensitizing agent such as polyhydric alcohols and polyethylene glycol-(400) is disclosed. The process embraces the discovery that compounds such as polyhydric alcohols and polyethylene glycol-(400) desensitize the L-phenyalanine ammonia-lyase enzyme to substantially higher substrate concentrations than practiced heretofore. In addition, polyhydric alcohols and polyethylene glycol-(400) substantially enhance the instantaneous rate of reaction and inhibit inactivation of the L-phenylalanine ammonia lyase enzyme over longer reaction periods.
    • 在L-苯丙氨酸氨裂解酶和脱敏剂如多羟基化合物存在下,从反式肉桂酸酯,环取代的反式肉桂酸酯或各种丙烯酸酯衍生物和氨或氨供体合成L-苯丙氨酸及其类似物的方法 醇和聚乙二醇 - (400)。 该方法包括以下发现:诸如多元醇和聚乙二醇 - (400)的化合物使L-苯丙氨酸氨裂解酶脱敏至比迄今为止实质上更高的底物浓度。 此外,多元醇和聚乙二醇(400)在更长的反应时间内基本上增强了瞬时反应速率并抑制了L-苯丙氨酸氨裂解酶的失活。