Calmodulin-DependentProteinKinaseII (290-309) is a potent CaMK antagonist with an IC50 of 52 nM for inhibiting Ca2+ calmodulin-dependentproteinkinaseII.
K-252a is a staurosporine analog isolated from Nocardiopsis sp. soil fungi. K-252a inhibits proteinkinase (IC50: 470 nM, 140 nM, 270 nM, and 1.7 nM for PKC, PKA, Ca2+ calmodulin-dependentkinase type II, and phosphorylase kinase, respectively).
Two Rho-associated kinases (ROCK), ROCK-I and ROCK-II, act downstream of the G protein Rho to regulate cytoskeletal stability. The ROCKs play important roles in diverse cellular functions including cell adhesion and proliferation, smooth muscle contraction, and stem cell renewal. Glycyl-H-1152 is a selective and potent ROCK inhibitor (IC50 = 11.8 nM for ROCK-II). It is a glycylated isoquinoline compound derived from the therapeutically-important ROCK inhibitor HA-1077 (Fasudil) and exhibits better specificity. Thus, it poorly inhibits Ca2+/calmodulin-dependentkinase type II, proteinkinase (PK) G, and Aurora A (IC50 = 2.57, 2.35, and 3.26 μM, respectively) as well as PKA or PKC (IC50 ≥ 10 μM for each). The potency of Glycyl-H-1152 is superior to that of other ROCK inhibitors, including Y-27632 (Ki = 220 nM) and HA-1077 (IC50 = 158 nM).
12(S)-HpETE(12-羟基二十碳四烯酸)是花生四烯酸在12-脂氧合酶(12-LOX)作用下生成的过氧化代谢产物。能剂量依赖性地刺激细胞内Ca2+释放(效用低于12-HETE),还能通过其对内皮细胞的作用参与血管张力的调节,诱导血管平滑肌细胞c-Fos和c-Jun蛋白的表达,增加AP-1( activating protein 1)的活性。
Autocamtide-2 is a highly selective peptide substrate for calcium/calmodulin-dependentproteinkinaseII (CaMKII), which belongs to the CAMK Ser/Thr proteinkinase family.