產(chǎn)品編號(hào) | C71019 |
英文名稱 | Phalloidin from Amanita phalloides |
中文名稱 | 鬼筆環(huán)肽 |
別 名 | EINECS 241-484-5; PHALLOIDIN; Phalloidine; 28-(2,3-dihydroxy-2-methylpropyl)-18-hydroxy-34-(1-hydroxyethyl)-23,31-dimethyl-12-thia-10,16,22,25,27,30,33,36-octaazapentacyclo[12.11.11.03,11; 毒傘素; 鬼筆鵝膏素; 鬼筆環(huán)肽 來源于鬼筆鵝膏; |
Specific References (1) | C71019 has been referenced in 1 publications.
[IF=8.025] Guangxu Li. et al. The proteins derived from platelet-rich plasma improve the endothelialization and vascularization of small diameter vascular grafts. INT J BIOL MACROMOL. 2022 Nov;:
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CAS | 17466-45-4 |
保存條件 | Store at -20 °C. |
注意事項(xiàng) | This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications. |
產(chǎn)品介紹 |
Phalloidin is a mushroom-derived toxin which can be used to label F-actin of the cytoskeleton with fluorochrome. Phalloidin belongs to a class of toxins called phallotoxins, which are found in the death cap mushroom (Amanita phalloides). It is a rigid bicyclic heptapeptide that is lethal after a few days when injected into the bloodstream. The major symptom of phalloidin poisoning is acute hunger due to the destruction of liver cells. 基本信息: CAS:17466-45-4 分子式:C35H48N8O11S 分子量:788.868 MDL:MFCD03427567 純度:≥90% 外觀/性狀:白色粉末 溶解性:溶于無水甲醇,DMSO或無水乙醇。 用途:鬼筆環(huán)肽是從毒蕈類鬼筆鵝膏(Amanita phalloides)中得到的有毒環(huán)狀七肽,它的作用與細(xì)胞松弛素B恰好相反,只與聚合的微絲結(jié)合,而不與肌動(dòng)蛋白單體分子結(jié)合。鬼筆環(huán)肽通過與聚合的微絲結(jié)合,抑制了微絲的解體,破壞了微絲的聚合和解聚的動(dòng)態(tài)平衡。用FITC和Rhodamin等熒光物質(zhì)標(biāo)記的鬼筆環(huán)肽可特異的與真核細(xì)胞的F-actin結(jié)合,從而顯示微絲骨架在細(xì)胞中的分布。 產(chǎn)品特點(diǎn): (1)親和力高:Kd= 20 nM; (2)特異性強(qiáng):選擇性結(jié)合于絲狀肌動(dòng)蛋白F-actin,而不會(huì)與單體肌動(dòng)蛋白G-actin結(jié)合; (2)優(yōu)于抗體染色:鬼筆環(huán)肽無物種限制,且?guī)缀醪淮嬖诜翘禺愋匀旧?,染色區(qū)和非染色區(qū)域?qū)Ρ刃詷O其明顯; (4)靈敏度高:納摩爾濃度(nM)染色即可滿足實(shí)驗(yàn)要求; (5)兼容性好,肌動(dòng)蛋白活力不受影響:鬼筆環(huán)肽衍生物很小,直徑約12-15?,分子量<2000 Da,標(biāo)記后的肌動(dòng)蛋白許多生理特性都得以維持; (6)適用范圍廣:無物種差異性;同樣適用于甲醛固定和打孔處理后的組織樣本。 配制方法: 0.1mg鬼筆環(huán)肽溶于1ml無水甲醇(也可用DMSO或無水乙醇溶解)配成貯存液,可在-20度避光的條件下長(zhǎng)期保存,工作液的濃度為5ug/ml,由貯存液加PBS稀釋20倍即可。 染色程序: PBS清洗細(xì)胞2次,每次10分鐘;3.7%-4%的甲醛或多聚甲醛固定20分鐘,PBS清洗細(xì)胞2次;加入5ug/ml的FITC-鬼筆環(huán)肽室溫染色30-60分鐘,夏季時(shí)間可以短一些,PBS清洗細(xì)胞2次;DAPI或hoechst33258染細(xì)胞核10分鐘,PBS清洗細(xì)胞2次;吸去多余水分,加熒光封片液(中性或偏堿性緩沖液加等量甘油),蓋上蓋玻片,熒光或共聚焦顯微鏡下觀察。 |