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该筛选库共包含约9200种具有潜在半胱氨酸蛋白酶抑制活性的类药物筛选化合物(图1-2)。
- Human rhinovirus A protease
- Cruzipain
- Cathepsin B
- Cathepsin K
- Cathepsin L
- Papain
- Cathepsin S
- Ubiquitin carboxyl-terminal hydrolase isozyme L1
- Caspase-3
- Calpain 1
- Caspase-6
- Ubiquitin carboxyl-terminal hydrolase 1
- Ubiquitin carboxyl-terminal hydrolase 2
- Sentrin-specific protease 7
- Caspase-8
- Caspase-7
- Sentrin-specific protease 8
- Sentrin-specific protease 1
- Sentrin-specific protease 6
- Cysteine protease ATG4B
- Genome polyprotein
- Calpain 2
- Caspase-1
- Ubiquitin carboxyl-terminal hydrolase 14
- Protease
- Dipeptidyl peptidase I
- Caspase-10
- Cathepsin L2
- Peptidase 1
- Hepatitis C virus polyprotein
- Calpain small subunit 1
- Probable ubiquitin carboxyl-terminal hydrolase FAF-X
- Sortase A
- Cathepsin F
- Rhodesain
- Falcipain 2
- Cathepsin H
- Cysteine protease falcipain-3
- Caspase-9
- Legumain
- Ubiquitin carboxyl-terminal hydrolase 7
- Caspase-2
- Cysteine protease falcipain-2
- Ubiquitin carboxyl-terminal hydrolase 28
- Caspase-14
- Caspase-5
- Poliovirus type 1 polyprotein
- Trophozoite cysteine proteinase
- Cathepsin B-like cysteine protease
- Cysteine proteinase B
- Gamma-glutamyl hydrolase
- Caspase-4
- Ubiquitin carboxyl-terminal hydrolase 1/WD repeat-containing protein 48
- Ubiquitin carboxyl-terminal hydrolase 47
- Calpain 1/2
- Ubiquitin carboxyl-terminal hydrolase isozyme L3
- Falcipain 2B
- Ubiquitin carboxyl-terminal hydrolase 5
- Caspase
- Ubiquitin carboxyl-terminal hydrolase 13
- Ubiquitin carboxyl-terminal hydrolase 4
- Caspase-3/Caspase-7
- Ubiquitin carboxyl-terminal hydrolase 8
- Cysteine proteinase falcipain-1
- Probable cathepsin C
- Sentrin-specific protease 2
- Cysteine proteinase 1
- Ubl carboxyl-terminal hydrolase 18
本化合物库的设计采用二维指纹相似性搜索方法。我们基于专利和文献数据,构建了包含15,000多个半胱氨酸蛋白酶相关生物活性化合物的参考数据库。通过MDL公开密钥和塔尼莫托相似度大于85%的标准,从内部数据库中筛选出具有实验验证活性的小分子类似物。需要说明的是,由于以半胱氨酸蛋白酶为靶点的药物特性,若应用PAINS过滤器会同时剔除大量参考分子和类似筛选化合物,因此本库构建未采用该过滤方案。活性化合物的剔除则通过内部MedChem过滤器实现。





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