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鬼筆環(huán)肽-PEG4-DBCO

鬼筆環(huán)肽-PEG4-DBCO
貨號(hào)：5303
規(guī)格：100 ug
價(jià)格：3732
品牌：AAT Bioquest

鬼筆環(huán)肽-PEG4-DBCO

貨號(hào)5303存儲(chǔ)條件在零下15度以下保存, 避免光照
規(guī)格100 ug價(jià)格3732
Ex (nm)
Em (nm)
分子量1366.55溶劑DMSO
產(chǎn)品詳細(xì)介紹



簡(jiǎn)要概述

產(chǎn)品基本信息

貨號(hào)：5303

產(chǎn)品名稱：鬼筆環(huán)肽-PEG4-DBCO

規(guī)格：100 ug

儲(chǔ)存條件：-15℃避光防潮

保質(zhì)期：24個(gè)月

 

產(chǎn)品物理化學(xué)光譜特性

分子量：1366.55

外觀：固體

溶劑：DMSO

 

產(chǎn)品介紹

鬼筆環(huán)肽-PEG4-DBCO是美國(guó)AAT Bioquest生產(chǎn)的鬼筆環(huán)肽綴合物，鬼筆環(huán)肽Phalloidin標(biāo)記探針會(huì)選擇性地結(jié)合F-肌動(dòng)蛋白。以納摩爾濃度使用，鬼筆環(huán)肽衍生物是方便的探針，用于標(biāo)記，鑒定和定量甲醛固定和透化組織切片中的F-肌動(dòng)蛋白，細(xì)胞培養(yǎng)物或無(wú)細(xì)胞實(shí)驗(yàn)。肌動(dòng)蛋白是一種球狀的，大約42kDa的蛋白質(zhì)，幾乎存在于所有真核細(xì)胞中。 它也是最高度保守的蛋白質(zhì)之一，與藻類和人類不同的物種相差不超過(guò)20％。 肌動(dòng)蛋白是細(xì)胞中兩種細(xì)絲的單體亞基：微絲，細(xì)胞骨架的三個(gè)主要組分之一，以及微絲，是肌細(xì)胞中收縮裝置的一部分。 因此，肌動(dòng)蛋白參與許多重要的細(xì)胞過(guò)程，包括肌肉收縮，細(xì)胞運(yùn)動(dòng)，細(xì)胞分裂和胞質(zhì)分裂，囊泡和細(xì)胞器運(yùn)動(dòng)，細(xì)胞信號(hào)傳導(dǎo)，以及細(xì)胞連接和細(xì)胞形狀的建立和維持。

鬼筆環(huán)肽比肌動(dòng)蛋白單體更緊密地結(jié)合肌動(dòng)蛋白絲，導(dǎo)致肌動(dòng)蛋白亞基從絲狀末端解離的速率常數(shù)降低，基本上通過(guò)防止絲解聚來(lái)穩(wěn)定肌動(dòng)蛋白絲。此外，發(fā)現(xiàn)鬼筆環(huán)肽抑制F-肌動(dòng)蛋白的ATP水解活性。鬼筆環(huán)肽在細(xì)胞中以不同濃度起作用不同。當(dāng)以低濃度引入細(xì)胞質(zhì)時(shí)，鬼筆環(huán)肽將較少聚合形式的細(xì)胞質(zhì)肌動(dòng)蛋白以及微絲蛋白聚集成聚集的肌動(dòng)蛋白聚合物的穩(wěn)定“島”，但它不會(huì)干擾應(yīng)力纖維，即厚的微絲束。鬼筆環(huán)肽的性質(zhì)是通過(guò)用熒光類似物標(biāo)記鬼筆環(huán)肽并用它們?nèi)旧?dòng)蛋白絲用于光學(xué)顯微鏡來(lái)研究F-肌動(dòng)蛋白在細(xì)胞中的分布的有用工具。鬼筆環(huán)肽的熒光衍生物已經(jīng)證明在定位活細(xì)胞或固定細(xì)胞中的肌動(dòng)蛋白絲以及在體外可視化單個(gè)肌動(dòng)蛋白絲方面非常有用。熒光鬼筆環(huán)肽衍生物已被用作高分辨率肌動(dòng)蛋白研究中的重要工具。 AAT Bioquest可以提供多色成像應(yīng)用的鬼筆環(huán)肽。

 

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