在96孔板中30°C下進(jìn)行實(shí)驗(yàn)20分鐘,孔中為0.1 mL實(shí)驗(yàn)緩沖液,包含50 mM TRIS pH 7.5, 0.4 M NaCl, 4 mM PEP, 0.15 mM NADH, 28 單位乳酸脫氫酶/mL, 16 單位丙酮酸激酶/mL, 3 mM DTT, 0.125 mM Syntide-2, 0.15 mM ATP和25 mM MgCl2。加入1 nM CHK1激酶域開始實(shí)驗(yàn)。PF 477736存在時(shí),通過測量初始速率,而測定對CHK1的抑制活性。通過酶動(dòng)力學(xué)和Excel軟件分析數(shù)據(jù),擬合競爭性抑制的動(dòng)力學(xué)模型,獲得Ki值。測評PF 477736的激酶選擇性。
問題 1:
Can you advise the vehicle suggested for S2904: 2% DMSO/40% PEG 300 at 5mg/ml, is it a suspension or clear solution? I wanted to know how to dissolve this compound for an i.p. injection in mice
回答:
S2904 can dissolve in 2% DMSO/40% PEG 300 at 5mg/ml as a clear solution. If you are going to use this kind of vehicle, please dissolve the compound in DMSO clearly first, then add PEG300, then water.