Synthesis and structure–activity relationships of o-sulfonamido-arylhydrazides as inhibitors of ll-diaminopimelate aminotransferase (ll-DAP-AT)
作者:Chenguang Fan、John C. Vederas
DOI:10.1039/c2ob00040g
日期:——
Recently, LL-diaminopimelate aminotransferase (LL-DAP-AT), a pyridoxal-5â²-phosphate (PLP)-dependent enzyme, was reported to catalyze a key step in the biosynthesis of L-lysine in plants and Chlamydia. Previous screening of a 29â201-compound library against LL-DAP-AT identified an o-sulfonamidoarylhydrazide as a reversible inhibitor with IC50 â¼ 5 μM. Structureâactivity relationship (SAR) studies based on this lead compound identified key structural features essential for enzyme inhibition and led to slightly improved inhibitors. Preliminary studies on the mode of inhibition of LL-DAP-AT by this class of compounds are also reported.
最近,LL-二氨基庚酸氨基转移酶(LL-DAP-AT)作为一种依赖于吡哆醛-5'-磷酸(PLP)的酶,被报道催化植物和查拉猫衣原体中L-赖氨酸生物合成的关键步骤。之前对一个包含29,201个化合物的库进行筛选,以寻找LL-DAP-AT的抑制剂,发现了一种o-磺胺酰苯肼作为可逆抑制剂,其IC50约为5μM。基于该先导化合物的结构活性关系(SAR)研究确定了对酶抑制至关重要的关键结构特征,并导致了稍微改进的抑制剂。此外,还报告了对该类化合物抑制LL-DAP-AT的初步研究。