作者:Si-Hong Wang、Shou-Feng Wang、Wei Xuan、Zong-Hao Zeng、Jing-Yi Jin、Jie Ma、Guan Rong Tian
DOI:10.1016/j.bmc.2008.02.010
日期:2008.4
2-Substituted 3-nitropropanoic acids were designed and synthesized as inhibitors against carboxypeptidase A (CPA). (R)-2-Benzyl- 3-nitropropanoic acid showed a potent inhibition against CPA (K(i)=0.15 microM). X-ray crystallography discloses that the nitro group well mimics the transition state occurred in the hydrolysis catalyzed by CPA, that is, an O,O'-bidentate coordination to the zinc ion and
设计并合成了2-取代的3-硝基丙酸作为羧肽酶A(CPA)的抑制剂。(R)-2-苄基-3-硝基丙酸显示出对CPA的有效抑制作用(K(i)=0.15μM)。X射线晶体学表明,硝基很好地模拟了CPA催化的水解过程中发生的过渡态,即与锌离子形成O,O'对称的配位,以及两个分别与Glu-270和Arg-形成氢键的配位基。 127。因为硝基是平面物质,所以我们提出了(R)-2-苄基-3-硝基丙酸作为CPA的伪过渡态类似物抑制剂。