Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, 240 Longwood Avenue, Boston, MA 02115, USA.
Chembiochem. 2012 May 7;13(7):972-6. doi: 10.1002/cbic.201200054. Epub 2012 Apr 20.
Which came first? We have investigated the biosynthesis of the piperazic acid (Piz) building blocks in the kutzneride family of metabolites. The flavin-dependent oxygenase KtzI was shown to convert ornithine to N(5)-OH-Orn. LC-MS/MS showed (13)C(5)-labeled versions of these two amino acids to be direct precursors of piperazic acid in vivo.
我们研究了库茨纳德里德代谢物家族中哌嗪酸(Piz)结构单元的生物合成途径。黄素依赖型加氧酶 KtzI 被证明能够将鸟氨酸转化为 N(5)-OH-Orn。LC-MS/MS 显示这两种氨基酸的 (13)C(5)-标记版本是体内哌嗪酸的直接前体。