日韩亚洲情Av无码,日韩亚洲AV无码精品影院,日韩人妻系列无码专区久久,亚洲无码日韩高清中文字幕

霍亂毒素B亞基抗體（cat#703）

Anti-Cholera Toxin B Subunit (Goat)

產品組成：
用100ul水重懸后，為含100ul抗霍亂毒素B亞基的山羊抗血清，加入了0.1%的NaN3用作抗體保護劑。
實驗：
用該產品（依據批次而定）針對0.5mg/ml的霍亂毒素B亞基形成免疫沉淀條帶的最大稀釋度為：1:4。
產品保存：
無菌凍干粉，重懸前2-8℃保存。
防護：
操作時，請穿上實驗服，帶上手套和防護眼鏡。此產品僅供科研應用，不可用于診斷試劑。

Cholera toxin is protein complex secreted by the bacterium Vibrio cholerae. CTX is responsible for the massive, watery diarrhea characteristic of cholera infection. The cholera toxin is an oligomeric complex made up of six protein subunits: a single copy of the A subunit (part A, enzymatic), and five copies of the B subunit (part B, receptor binding), denoted as AB5. Subunit B binds while subunit A activates the G protein which activates adenylate cyclase. The five B subunits - each weighing 11 kDa, form a five-membered ring. The A subunit which is 28 kDa, has two important segments. The A1 portion of the chain (CTA1) is a globular enzyme payload that ADP-ribosylates G proteins, while the A2 chain (CTA2) forms an extended alpha helix which sits snugly in the central pore of the B subunit ring. This structure is similar in shape, mechanism, and sequence to the heat-labile enterotoxin secreted by some strains of the Escherichia coli bacterium.