S,S-Boc-Val-Pro-ValP(OPh)2] and greater than 100 – fold increase in cellular anti-chlamydial activity compared to JO146-D1 which possesses the unnatural valine at P1. JO146 and the individual diastereomers had excellent selectivity for the serine protease HNE over the potential off-target serine proteases trypsin and chymotrypsin. Docking studies supported the biological data with a geometrically unfavoured
JO146是衣原体HtrA(CtHtrA)的肽
膦酸酯
抑制剂的两种非对映异构体的混合物,据报道对人和考拉均具有抗衣原体物种的活性。在这项研究中,我们分离了单独的非对映异构体JO146-D1和JO146-D2(纯度≥90%),并评估了它们对
丝氨酸蛋白酶人类嗜中性
弹性蛋白酶(HNE)的抑制活性,该酶在结构和功能上与CtHtrA以及在沙眼衣原体
细胞培养中。JO146-D2 [ S,S,R -Boc-Val-Pro-Val P(OPh)2 ]是在P1处具有生理相关缬
氨酸的异构体,在体外具有约2.5倍的增加HNE抑制效力超过JO146-D1 [ S,S,S -Boc-Val-Pro-Val P(OPh)2 ],与具有非天然缬
氨酸的JO146-D1相比,细胞抗衣原体活性提高了100倍以上在P1。JO146和单个非对映异构体对
丝氨酸蛋白酶HNE的选择性优于潜在的脱靶
丝氨酸蛋白酶胰
蛋白酶和胰凝乳
蛋白酶。对接