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Nicotinamide (NAM), an amide form of niacin (vitamin B3), is a water-soluble and noncompetitive inhibitor of the deacetylation reaction catalyzed by Sirtuins and it acts as constituent of the enzyme cofactors NAD and NADP. Nicotinamide (Vitamin B3) 是一种水溶性维生素，是NAD 和 NADP的活性成分，也是一种sirtuins抑制剂。
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PF-562271, which is a potent ATP-competitive Pyk2/FAK dual inhibitor, has completed phase I clinical trial and is considered to be a promising drug for patients with solid tumors. PF-562271是一种有效的，ATP竞争性的，可逆的FAK抑制剂，IC50为1.5 nM，作用于Pyk2比作用于FAK选择性低10倍左右，比作用于其他蛋白激酶（除了一些CDKs）选择性高100倍以上。
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Honokiol, a low molecular weight natural product isolated from the bark of magnolia officinalis, possesses potent anticancer activities which is chiefly via the inhibition of AKT and mitogen-activated protein kinase (MAPK) phosphorylation. Honokiol是木兰的有效成分，抑制Akt磷酸化，且促进ERK1/2磷酸化。
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MG-101是一种有效的半胱氨酸蛋白酶抑制剂, 作用于钙蛋白酶I, 钙蛋白酶II, 组织蛋白酶B, 和组织蛋白酶L, Ki值分别为190 nM , 220 nM, 150 nM, 500 pM.
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Flavopiridol与ATP竞争抑制CDK1，CDK2，CDK4和CDK6，IC50为40 nM。Flavopiridol还具有EGFR和PKA抑制性。
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