5'-substituted adenosynes, preparation thereof and use as inhibitors of s-adenosylmethionine decarboxylase.
申请人:Southern Research Institute
公开号:EP2574616A2
公开(公告)日:2013-04-03
The crystal structure of the complex of S-adenosylmethionine methyl ester with hAdoMetDC F223A, a mutant where the stacking of the aromatic rings of F7, adenine and F223 would be eliminated. The structure of this mutant with the ester shows that the ligand still maintains a syn conformation aided by pi-pi interactions to F7, hydrogen bonds to the backbone of Glu67, and electrostatic interactions. Several series of AdoMet substrate analogues with a variety of substituents at the 8 position of adenine were synthesized and analyzed for their ability to inhibit hAdoMetDC. To understand these results, virtual modeling of the enzyme inhibitor complexes and the crystal structures of human AdoMetDC with 5'-deoxy-5'-[N-methyl-N-[2-(aminooxy)ethyl]ainino-8-methyl]adenosine (MAOEMA) and 5'-deoxy-5'-[N-methyl-N-[4-(aminooxy)butyl]amino-8-ethyl]adenosine (MAOBEA) at the active site have been determined experimentally.
S- 腺苷蛋氨酸甲酯与 hAdoMetDC F223A 复合物的晶体结构,F223A 是一种突变体,在这种突变体中,F7、腺嘌呤和 F223 的芳香环堆积将被消除。这种带有酯的突变体的结构显示,配体仍然通过与 F7 的 pi-pi 相互作用、与 Glu67 骨架的氢键以及静电作用保持合成构象。我们合成了几个系列的 AdoMet 底物类似物,它们在腺嘌呤的 8 位上有多种取代基,并分析了它们抑制 hAdoMetDC 的能力。为了理解这些结果,实验测定了酶抑制剂复合物的虚拟模型以及人 AdoMetDC 与 5'-脱氧-5'-[N-甲基-N-[2-(氨基氧)乙基]氨基-8-甲基]腺苷(MAOEMA)和 5'-脱氧-5'-[N-甲基-N-[4-(氨基氧)丁基]氨基-8-乙基]腺苷(MAOBEA)在活性位点的晶体结构。