Pierce™ Fab 微型制备试剂盒
Pierce™ Fab 微型制备试剂盒
Pierce™ Fab 微型制备试剂盒
Pierce™ Fab 微型制备试剂盒
Thermo Scientific™

Pierce™ Fab 微型制备试剂盒

使用固定化的木瓜蛋白酶消化人或小鼠 IgG 抗体,使用蛋白 A 琼脂糖纯化 Fab 片段。
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货号数量
4468510份抗体样品,每份含 25 至 250μg IgG
货号 44685
价格(CNY)
7,454.00
Each
数量:
10份抗体样品,每份含 25 至 250μg IgG
请求批量或定制报价
价格(CNY)
7,454.00
Each
Thermo Scientific™ Pierce Fab 制备试剂盒通过固定化的木瓜蛋白酶消化人或小鼠 IgG 抗体,制备单独的 Fab 和 Fc 片段,随后使用蛋白A琼脂糖纯化 Fab。

该试剂盒使用木瓜蛋白酶(非特异性的硫醇-肽链内切酶)从铰链区正上方酶促切割全 IgG,使每个抗体分子产生两个独立的 Fab 片段和一个 Fc 片段。由于木瓜蛋白酶提供为固定化的球珠状琼脂糖树脂形式,消化反应可以通过从 IgG 溶液中除去树脂而轻易地终止,获得无酶的消化产品。抗体消化反应在方便易用的一次性离心柱内进行,可有效地去除固定化的蛋白酶并最大限度地回收 IgG 片段。试剂盒中还包括蛋白 A 离心柱和缓冲液,能够有效纯化所得的片段。蛋白 A 结合 Fc 片段和未消化的 IgG 抗体,可从穿柱流分中回收纯化的 Fab 片段。Thermo Scientific Zeba™ 脱盐离心柱实现方便、快捷的 IgG 样品制备。

特点:

  • 无酶的酶切产品 – 固定化木瓜蛋白酶(微珠状琼脂糖树脂)可用于控制酶切反应,并完全去除蛋白酶中生成的抗体片段

  • 适用于人和其他物种的 IgG –该试剂盒程序针对人、小鼠和兔 IgG 进行了优化,但基于木瓜蛋白酶的酶切对于许多物种和 IgG 亚类(包括大鼠、山羊和猪)有效(注:对于小鼠 IgG1,为获得较佳结果,请使用产品编号 44980)

  • 高容量 – 该试剂盒可一次使用多达 4mg IgG 进行酶切和纯化。使用标准大小试剂盒可对 0.25 至 4mg IgG 进行片段化,微型试剂盒可对 25 至 250μg IgG 进行片段化

  • 提供即用型 Fab – 在中性 pH 值磷酸钠缓冲液中发生纯化 Fab 片段的酶切和最终回收,适用于储存或在典型应用中立即使用

  • 完整且易于使用 – 试剂盒包括制备和纯化抗体片段所需的所有试剂、离心柱和附件

包括:

琼脂糖树脂木瓜蛋白酶、半胱氨酸、消化缓冲液、蛋白 A 离心柱(带结合和洗脱缓冲液)、脱盐离心柱及配件

仅供科研使用。不可用于诊断程序。
规格
套装内容Pierce Fab 微量制备试剂盒
数量10份抗体样品,每份含 25 至 250μg IgG
产品线Pierce
Unit SizeEach
内容与储存
足够用于:10 份抗体样品,每份含 25 至 250 μg IgG
• Pierce 木瓜蛋白酶酶琼脂糖,0.5 mL
• 盐酸半胱氨酸,1 g
• Fab 酶切缓冲液,55 mL
• NAb 蛋白 A Plus 离心柱,0.2 mL,2 根柱
• PBS 包(每个可制备 500 mL),2 包
• IgG 洗脱缓冲液,50 mL
• Zeba 脱盐离心柱,7K MWCO,0.5 mL,10 根柱
• 离心柱,0.8 mL,10 根柱
• 微量离心管,2 mL,30 支管

储存在 4–8°C 下。

常见问题解答 (FAQ)

Can I reuse the immobilized digestion enzymes in the Thermo Scientific IgG Fragmentation kit?

No. For best results, use the immobilized enzyme once and discard after use.

Find additional tips, troubleshooting help, and resources within our Protein Assays and Analysis Support Center.

How long does IgG digestion take using the Thermo Scientific IgG Fragmentation kit?

The digestion time is a function of the IgG concentration and source. For rabbit, mouse and human IgG, optimized digestion times are given in the instructions for each kit. Digestion times listed in the product instructions result in 80-90% digestion, although efficiency varies depending on IgG preparation and source.

Find additional tips, troubleshooting help, and resources within our Protein Assays and Analysis Support Center.

In the Thermo Scientific IgG Fragmentation kit, when digesting an IgG that does not bind to Protein A, how do I purify the Fab and F(abÁ)2 fragments?

If the IgG is a species or subclass that does not bind to Protein A, researchers can immobilize an antibody specific for the desired fragment. For example, to purify digested rat IgG2a, use the Aminolink Plus Immobilization Kit (Cat. No. 44894) to immobilize goat anti-rat Fc antibody. Our Tech Tip #34 and other web resources list IgG binding properties of Protein A. (Because Protein G and Protein A/G bind Fab fragments, they are not effective for this application.)

Find additional tips, troubleshooting help, and resources within our Protein Assays and Analysis Support Center.

Can I purchase the immobilized enzymes (proteases) from the Thermo Scientific IgG Fragmentation kit separately?

Yes. The three immobilized enzymes are available in 5 mL package sizes as shown below:

• Immobilized Ficin, Cat. No. 44881
• Immobilized Papain, Cat. No. 20341
• Immobilized Pepsin, Cat. No. 20343

Find additional tips, troubleshooting help, and resources within our Protein Assays and Analysis Support Center.

How many Thermo Scientific IgG Fragmentation kits are available and which enzymes are included?

There are six Thermo Scientific IgG fragmentation kits:

• Fab Preparation Kit (Papain), Cat. No. 44985
• Fab Micro Preparation Kit (Papain), Cat. No. 44685
• F(abÁ)2 Preparation Kit (Pepsin), Cat. No. 44988
• F(abÁ)2 Micro Preparation Kit, (Pepsin), Cat. No. 44688
• Mouse IgG1 Fab and F(abÁ)2 Preparation Kit (Ficin), Cat. No. 44980
• Mouse IgG1 Fab and F(abÁ)2 Micro Preparation Kit (Ficin), Cat. No. 44680

Find additional tips, troubleshooting help, and resources within our Protein Assays and Analysis Support Center.