Oregon Green 488,監(jiān)測酸性細胞器或通路中pH
Oregon Green 488(監(jiān)測酸性細胞器或通路中pH)是一種氟化熒光素染料。在水溶液中以互變異構(gòu)體的形式存在。Oregon Green 488在生理pH值下具有最小的pH依賴性,但由于其pKa=4.8較低。因此可以用作細胞內(nèi)pH值的指示劑。與熒光素相比,Oregon Green 488對光漂白的敏感性較低。Oregon Green 488已與抗體和蛋白質(zhì)以及DNA結(jié)合,用于標記和檢測。Oregon Green 488 偶聯(lián)物的標準物質(zhì)或中等酸性溶液(pKa 值 ~4.7)的 pH 值敏感探頭。Emission\Excitation: 514 nm\490 nm。
溶解度Solubility Chloroform: soluble;DMSO: soluble
性狀:A solid
儲藏條件 :-20℃低溫避光保存
圖譜:
案例:
Oregon Green 488 (OG) fluorescence lifetime (FLT), in solutions of different pH: (a) FLIM images, (b) histograms of the FLT values found in the pixels of the images, and (c) corresponding means and standard deviations. All images are in the same scale for fluorescence intensity (FI). For all FLIM images, the scale bar is as shown in the top-left image and measures at 100 μm.