Pierce™ DSP,No-Weigh™ 规格
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Invitrogen17万+抗体限时买二赠一,靶点广,灵活用!
Pierce™ DSP,No-Weigh™ 规格
Thermo Scientific™

Pierce™ DSP,No-Weigh™ 规格

Thermo Scientific Pierce DSP(Lomant 试剂)是水不溶性、同型双功能 N-羟基琥珀酰亚胺酯(NHS了解更多信息
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货号数量
225851 g
A3539310 x 1 mg
2258650 mg
货号 22585
价格(CNY)
4,600.00
Each
添加至购物车
数量:
1 g
请求批量或定制报价
价格(CNY)
4,600.00
Each
添加至购物车
Thermo Scientific Pierce DSP(Lomant 试剂)是水不溶性、同型双功能 N-羟基琥珀酰亚胺酯(NHS 酯)交联剂,具有硫醇可切割性、伯胺反应性,适用于多种应用。DSP 在8个碳原子间隔臂的每端有一个胺反应性 NHS 酯。NHS 酯在 pH 值 7–9 的条件下与伯胺反应可形成稳定的酰胺键,并释放 N-羟基琥珀酰亚胺。蛋白(包括抗体)通常在赖氨酸 (K) 残基的侧链和每个多肽的 N 端有若干伯胺,这些伯胺可用作 NHS 酯交联试剂的靶标。DSP 是非磺化的且不溶解在水中,因此必须首先溶解在有机溶剂中,然后再添加到水反应混合物中。由于 DSP 不具有带电的基团,它具有亲脂性和膜可穿透性,因此可用于细胞内和膜内偶联。DSP (DTTSP) 的磺化类似物具有水溶性。如果相关的应用需要一个在还原剂条件下不能裂解的稳定间隔臂,也可使用 DSP 交联剂的不可切割类似物 DSS。

Thermo Scientific No-Weigh 产品是以预分装规格提供的专业试剂。预称重的包装可消除重复开瓶和关盖,从而防止随时间推移试剂反应性的降低和污染。对于这种规格,可每次使用一瓶新鲜试剂,消除了对少量试剂进行称重的麻烦,并减少了对试剂稳定性的担忧。

DSP 在8个碳原子间隔臂的每端有一个胺反应性 N-羟基琥珀酰亚胺 (NHS) 酯。NHS 酯在 pH 值 7-9 的条件下与伯胺反应可形成稳定的酰胺键,同时释放 N-羟基琥珀酰亚胺离去基团。蛋白(包括抗体)通常在赖氨酸 (K) 残基的侧链和每个多肽的 N 端有若干伯胺,这些伯胺可用作 NHS 酯交联试剂的靶标。如果相关的应用需要一个在还原剂条件下不能裂解的稳定间隔臂,也可使用 DSP 交联剂的不可切割类似物 DSS。

Lomant 试剂的特点:

反应性基团:NHS 酯(两端)
可与以下基团发生反应:氨基基团(伯胺)
• 胺反应性 NHS 酯与任何含伯胺分子迅速反应
• pH 值为8.5时,间隔臂中的二硫键易被 10-50 mM DTT 或 TCEP 切割
• 间隔臂也可被还原 SDS-PAGE 上样缓冲液切割
• 可切割交联剂能够分离交联产物
• 不溶于水(首先溶于 DMF 或 DMSO);与 DTSSP (Sulfo-DSP) 具有可比性
• 可穿透膜,可用于细胞内交联

应用:
• 细胞裂解和免疫沉淀前细胞内蛋白的化学交联
• “固定”蛋白相互作用,以便识别较弱或瞬时蛋白相互作用
• 固定组织进行免疫染色而不损坏 RNA
• 进行蛋白交联,以通过单步反应产生生物偶联物
• 将蛋白固定到胺包被的表面上

DSP 的属性
• 其他名称:Lomant 试剂,DTSP
• 分子式:C14H16N2O8S2
• 分子量:404.42
•间隔臂长度:12.0Å(8个原子)
•货号:57757-57-0
• 反应基团:NHS 酯,在 pH 值 7.0–9.0 时与伯胺反应

DSP 规格:
我们按照较高规格生产 DSP,以生产高特异性生物偶联物,确保您数据的完整性,并为您提供较高程度的一致性。每批 DSP 都经过检测,符合以下最低规格。
鉴别:IR 扫描仅显示具有 DSP 的结构和官能团特征的峰
纯度:> 95%(定量 NMR 法)(交联剂纯度的较高标准)

产品参考文献
交联剂应用指南—检索本产品的近期参考文献

仅供科研使用。不可用于诊断程序。
规格
细胞渗透性
描述DSP
形式粉末
标记方法化学标记
分子量404.42
聚乙二醇化
产品线Pierce™
数量1 g
反应一部分NHS 酯
运输条件环境
溶解度DMF、DMSO
间隔臂长12.0 Å
水溶性
化学反应性胺-胺
可裂解用硫醇
交联剂类型同型双功能团试剂
产品规格标准品,一次性使用,优级
产品类型交联剂
间隔子中等(10 至 30 Å)
Unit SizeEach
内容与储存
接收后,请在 4°C 下干燥储存。

常见问题解答 (FAQ)

Can you provide the shelf-life for DSP (dithiobis(succinimidyl propionate)), Lomant's Reagent?

DSP (dithiobis(succinimidyl propionate)), Lomant's Reagent is covered under our general 1-year warranty and is guaranteed to be fully functional for 12 months from the date of shipment, if stored as recommended. Please see section 8.1 of our Terms & Conditions of Sale (https://www.thermofisher.com/content/dam/LifeTech/Documents/PDFs/Terms-and-Conditions-of-Sale.pdf) for more details.

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

Is DSP soluble in acetonitrile?

DSP has been estimated to be soluble in acetonitrile up to a concentration around 25 mg/mL.

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

Is a hazy solution common after the addition of the stock DSP solution to an aqueous buffer system?

Yes, frequently the resultant reaction mixture will become hazy after the addition of the stock solution.

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

What are some common uses for the DSP cross-linker?

DSP has been used for, but is not limited to, the following applications: examining spatial relationships of capsid polypeptides, studying renal Na+ and K+ ATPase, nearest neighbor relationships of bovine mitochondrial H+ATPase, chemical cross-linking of a-CPI, identifying cross-linked cytochrome P-450 in rat liver microsomes, studying the influence of metal ions on prothrombin self-association, studying the glycoprotein topology on intact human red blood cells, and determining membrane antigens by covalent cross-linking to monoclonal antibodies.

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

What is the difference between a homo- and a hetero- bifunctional cross-linker?

A homobifunctional cross-linker has the same reactive group on both ends, for example two amine-reactive groups. It is used in a one-step conjugation where the two molecules are mixed prior to the addition of the cross-linker. This leads to less efficient cross-linking because polymers can easily be created. A heterobifunctional cross-linker has two different reactive groups, for example an amine-reactive group on one end and a sulhydryl reactive group on the other. These can be used in two-step conjugations by reacting the fIrst end with the molecule containing its reactive group, and then adding the molecule that is reactive towards the other end. This leads to much more efficient cross-linking because polymerization does not occur.

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