Biosynthesis of
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‐4‐Chlorokynurenine, an Antidepressant Prodrug and a Non‐Proteinogenic Amino Acid Found in Lipopeptide Antibiotics
作者:Hanna Luhavaya、Renata Sigrist、Jonathan R. Chekan、Shaun M. K. McKinnie、Bradley S. Moore
DOI:10.1002/anie.201901571
日期:2019.6.17
techniques to establish l‐4‐Cl‐Kyn biosynthesis, which is initiated by the flavin‐dependent tryptophan chlorinase Tar14 and its flavin reductase partner Tar15. This work revealed the first tryptophan 2,3‐dioxygenase (Tar13) and kynurenine formamidase (Tar16) enzymes that are selective for chlorinated substrates. The substrate scope of Tar13, Tar14, and Tar16 was examined and revealed intriguing promiscuity
l -4-氯屈尿素(l -4-Cl-Kyn)是一种神经药物候选药物,目前正在开发中,用于治疗重度抑郁症。最近,在脂肽抗生素塔霉素中自然发现该氨基酸为残基。在本文中,我们报道了前所未有的转换升色氨酸到升-4-CL-的Kyn从海洋细菌糖单SP的taromycin生物合成途径催化由四种酶。CNQ-490。我们使用遗传,生化,结构和分析技术,建立升‐4‐Cl‐Kyn生物合成,由黄素依赖性色氨酸氯化酶Tar14及其黄素还原酶伴侣Tar15引发。这项工作揭示了第一种对氯化物底物具有选择性的色氨酸2,3-二加氧酶(Tar13)和犬尿氨酸甲酰胺酶(Tar16)酶。检查了Tar13,Tar14和Tar16的底物范围,并发现了令人感兴趣的混杂性,从而为这些酶作为有用的生物催化剂的目标工程打开了大门。