CarboxyLink™ 偶联树脂
CarboxyLink™ 偶联树脂
Thermo Scientific™

CarboxyLink™ 偶联树脂

Thermo Scientific CarboxyLink 偶联树脂用于共价固定肽或其他含羧基 (—COOH) 分子至多孔微珠状树脂,用于亲和纯化程序。CarboxyLink 树脂是交联微珠状琼脂糖,该琼脂糖已经使用二氨基二丙基胺 (DADPA) 活化,以包含长间隔臂,每种间隔臂末端均具有一个伯胺了解更多信息
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货号数量
2026625 mL
货号 20266
价格(CNY)
3,286.00
Each
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数量:
25 mL
请求批量或定制报价
价格(CNY)
3,286.00
Each
添加至购物车
Thermo Scientific CarboxyLink 偶联树脂用于共价固定肽或其他含羧基 (—COOH) 分子至多孔微珠状树脂,用于亲和纯化程序。

CarboxyLink 树脂是交联微珠状琼脂糖,该琼脂糖已经使用二氨基二丙基胺 (DADPA) 活化,以包含长间隔臂,每种间隔臂末端均具有一个伯胺。与树脂和碳二亚胺交联剂 EDC(CarboxyLink 固定试剂盒中包含)的共同孵育时,含羧基的分子通过稳定酰胺键永久连接至支持物。偶联一个分子后,可在典型的蛋白亲和纯化程序中多次使用制备好的亲和柱。CarboxyLink 偶联树脂还可用于利用替代胺反应性交联化学品固定其他种类的分子。

CarboxyLink 偶联树脂的特点:

CarboxyLink 偶联树脂— DADPA 活化交联 4% 微珠状琼脂糖
有效固定—偶联 1 至 2 mg 肽/毫升树脂(使用大于 16 μMol 胺毫升树脂活化的 CarboxyLink 琼脂糖树脂;使用大于 40 μMol 胺毫升树脂活化的 UltraLink 支持物)
稳定键—固定可通过酰胺键进行羧基的共价结合,因此可使用单批制备的树脂进行多轮亲和纯化
灵活而温和的偶联条件—固定反应可在简单的 MES 或其他非胺基和非羧基、含或不含有机溶剂的近中性缓冲液中完成。
适用于未修饰多肽—以高容量和无空间位阻的多种位向固定多肽,可高效应用于特异性抗体的亲和纯化

由于 EDC 将羧酸盐交联至伯胺、肽和其他含这两种官能团的分子,所以将被不同聚合并固定至 CarboxyLink 树脂。对于末端只有羧基和氨基的肽,与 CarboxyLink 试剂盒的偶联将产生通过 C 端连接至支持物的肽的端端链。通常,该结构可提供高容量和低空间位阻,用于亲和纯化。然而,如果是在序列中间含有多种伯胺(赖氨酸)或羧酸盐(谷氨酸和天冬氨酸)的肽,CarboxyLink 偶联方法可能会导致封闭关键结合位点,进而产生高偶联容量,但亲和纯化的结合能力较差。固定替代方法包括 AminoLink Plus 偶联树脂UltraLink BiosupportSulfoLink 偶联树脂

相关产品
CarboxyLink™ 固定试剂盒,2 mL
CarboxyLink™ 固定试剂盒(含 UltraLink™支持物),2 mL
仅供科研使用。不可用于诊断程序。
规格
色谱柱类型亲和,琼脂糖树脂
描述CarboxyLink偶联树脂
产品规格瓶装
数量25 mL
固定相
靶标伯胺
容量(公制)25 mL
形式液体
产品线CarboxyLink™
类型树脂
Unit SizeEach
内容与储存
储存于 4°C。

常见问题解答 (FAQ)

What is the difference between the Thermo Scientific CarboLink (now Glycolink) and CarboxyLink Resins?

The CarboxyLink Resin is for immobilizing carboxyl-containing biomolecules after EDC activation. CarboLink Resin is hydrazide-activated and immobilizes glycoproteins. Carbolink has been replaced with glycolink immobilization kits and resins. Glycolink can also be used to immobilize steroids or other molecules containing ketones. Both resins are capable of coupling ligands via carboxylic acids using EDC (Cat. No. 22980). Both immobilization chemistries are available on UltraLink Resin as UltraLink Hydrazide (glycoproteins) and UltraLink DADPA (carboxyl) Resins.

Find additional tips, troubleshooting help, and resources within our Protein Purification and Isolation Support Center.

How many purifications can be performed using the same affinity column with CarboxylLink or DADPA UltraLink resin?

The stability of the immobilized protein and the type of elution buffer used determines how many times a column can be reused. Typically, the columns can be reused at least 10 times without significant loss in purification efficiency.

Find additional tips, troubleshooting help, and resources within our Protein Purification and Isolation Support Center.

My peptide is not water-soluble; can I use other solvents for conjugation when using the CarboxylLink or DADPA UltraLink resin?

Yes. When coupling water-insoluble peptides or other molecules, use water-miscible solvents such as ethanol, methanol, DMSO or DMF. Dissolve the peptide in 100% of the water-miscible solvent first and then add this solution to the Conjugation Buffer. Organic solvent concentrations up to 50% in the coupling reaction are compatible. When using high concentrations of organic solvent (> 25%), gradually equilibrate the resin into the organic solvent. For example, wash the resin with 2-3 column volumes of each of the following solutions before adding the sample in 50% organic solvent:

- 95% aqueous, 5% organic solvent
- 85% aqueous, 15% organic solvent
- 75% aqueous,25% organic solvent
- 60% aqueous, 40% organic solvent
- 50% aqueous, 50% organic solvent
Reverse the percent organic solvent and re-equilibrate the resin in 100% aqueous if purifying a sample in aqueous buffer.

Find additional tips, troubleshooting help, and resources within our Protein Purification and Isolation Support Center.

How do I determine the degree of antibody coupling to the CarboxylLink or DADPA UltraLink resin?

Protein samples can be quantified using Thermo Scientific BCA Protein Assay (Cat. No. 23225) or Coomassie Plus (Bradford) Protein Assay (Cat. No. 23236). Alternatively, coupling can be estimated by measuring the protein concentration in solution before and after coupling. The difference in the two measurements is the amount coupled to the resin. Make sure to factor in any change in sample volume.

Find additional tips, troubleshooting help, and resources within our Protein Purification and Isolation Support Center.

Are the CarboxylLink and DADPA UltraLink Resins available as kits?

CarboxyLink Coupling Resin is available as a kit (Cat. No. 44899), which contains sufficient components to prepare five reusable affinity columns. The resin is also available separately (Cat. No. 20266, 25 mL). DADPA UltraLink is available only as a kit (Cat. No. 53154). The kits do not contain buffers for affinity purification.

Find additional tips, troubleshooting help, and resources within our Protein Purification and Isolation Support Center.