New Active HIV-1 Protease Inhibitors Derived from 3-Hexanol: Conformation Study of the Free Inhibitors in Crystalline State and in Complex with the Enzyme
作者:Natasza E. Ziółkowska、Anna Bujacz、Ramnarayan S. Randad、John W. Erickson、Tereza Skálová、Jindřich Hašek、Grzegorz Bujacz
DOI:10.1111/j.1747-0285.2012.01328.x
日期:2012.5
cases, the conformations found in the crystalline state differ significantly from the conformations obtained by computational docking of the inhibitor in the binding cleft of native HIV‐1 protease. Owing to the prevalence of hydrophobic substituents in all these inhibitors, the conformational mobility in water solution is restricted to their compact forms. The spectrum of low‐energy conformations in solution
合成并表征了衍生自2,5-二氨基-1,6-二苯基-3-己醇的四种新型线性非肽类HIV-1蛋白酶抑制剂。它们都与HIV-1蛋白酶紧密结合,抑制常数K i在20 p m –5 n m范围内。。所研究的抑制剂结晶,并通过X射线衍射确定其晶体结构。在所有情况下,在结晶状态下发现的构象都与通过抑制剂对接在天然HIV-1蛋白酶结合裂隙中而获得的构象显着不同。由于所有这些抑制剂中都普遍存在疏水性取代基,因此水溶液中的构象迁移仅限于其紧凑形式。溶液中低能构象的光谱在形成抑制剂晶体(以苯环堆积为主导基序)或与HIV-1蛋白酶形成复合物(适合于酶口袋的延长构象)形成过程中发生了巨大变化。负责紧密绑定)。