InVision™ His-Tag 胶内染色试剂盒
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Invitrogen™

InVision™ His-Tag 胶内染色试剂盒

The InVision His-tag In-gel Staining Kit includes InVision His-tag In-gel Stain as well as BenchMark His-tagged Protein Standard. InVision His-tag了解更多信息
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货号数量
LC60331 kit
货号 LC6033
价格(CNY)
11,362.00
Each
添加至购物车
数量:
1 kit
请求批量或定制报价
价格(CNY)
11,362.00
Each
添加至购物车
The InVision His-tag In-gel Staining Kit includes InVision His-tag In-gel Stain as well as BenchMark His-tagged Protein Standard. InVision His-tag In-gel Stain is a ready-to-use, fast, sensitive, and highly specific stain for visualizing His-tagged fusion protein bands directly in a polyacrylamide gel following electrophoresis.

Features:
• Stain proteins fused to an oligohistidine sequence
• Eliminate western blotting—detect His-tagged proteins directly in the gel
• Detect nanogram levels of protein bands with a UV transilluminator or imaging equipment with appropriate filters or lasers
• Visualize results in under three hours

Compare all His-tag stains ›

Fast and easy staining
The InVision His-tag In-gel Stain protocol is easy to perform and requires very little hands-on-time, allowing for rapid and scalable protein expression screening in a variety of gel types. Following electrophoresis, the gel is fixed, incubated in the stain, washed, and the specific His-tagged fusion protein detected by exposing the gel to UV or visible light. In under three hours, nanogram levels of His-tagged fusion protein can be detected. After documenting your InVision Stain signal, total protein staining can be performed.
仅供科研使用。不可用于诊断程序。
规格
检测定位凝胶内检测
检测方法荧光
产品线InVision
产品类型His 标签蛋白胶内染色试剂盒
数量1 kit
靶标分子蛋白质(His 标记)
标签或染料InVision His-Tag 染料
Unit SizeEach
内容与储存
InVision™ His 标签胶内染料以 1X 即用型染色试剂 (500 mL) 的形式提供。试剂盒中还包含 BenchMark™ His 标签蛋白标准品 (125 μL)。

常见问题解答 (FAQ)

我使用InVision His-Tag In-Gel Stain对His标签融合蛋白染色,并使用BenchMark His标签蛋白标准品作为阳性对照。结果看到BenchMark His标签蛋白标准品出现一些多余条带。问题出在哪里?

这可能是因为曝光过度——为检测低表达水平的目标蛋白而加长曝光时间,可能导致BenchMark His标签蛋白标准品中的微量污染物显色。可降低BenchMark His标签蛋白标准品的上样量,或者先以较短的曝光时间对标准品进行成像,然后以较长的曝光时间对低表达水平蛋白进行成像。

我在使用InVisionHis-Tag In-Gel Stain时,得到了较高的、不均匀的背景。你们有何建议?

以下是可能原因和解决方案:

•遗漏了洗涤步骤。应使用20 mM磷酸盐缓冲液洗涤凝胶2次。如果背景很高,应进行第3次水洗并洗涤10分钟。 •水质较差。应使用超纯水(电阻率大于18 megohm/cm)洗涤和制备磷酸盐缓冲液。
•蛋白质上样量过多。降低蛋白浓度或减少上样体积。
•成像平台不干净。每次进行凝胶成像前都应使用纸巾清洁成像系统,以最大程度的降低背景荧光。
•非特异性条带。强碱性蛋白和二价金属结合蛋白,如碳酸酐酶(30 kDa)、SlyD(21 kDa)和磷酸化酶 B(97 kDa),可与染色剂发生交叉反应,产生非特异性条带。

我在使用InVisionHis-Tag In-Gel Stain时,得到的染色效果很弱。你们有何建议?

以下是可能原因和解决方案:

•染色不充分。应使用适合所用凝胶类型的染色方案。使用BenchMark His标签蛋白质标准品作为阳性对照,对染色试剂和方案进行验证。避免过度洗涤凝胶。
•凝胶显色或成像不恰当。应使用带有照相机的紫外透照仪和具有正确滤镜的激光扫描仪(详情见使用手册)进行凝胶成像。不建议使用Polaroid照相机。应确保照相机光圈打开并有足够的光进入,并且照相机应连接到可调整对比度的成像软件上,从而获得最佳的图像。完成洗涤步骤后,应立即对凝胶成像。将凝胶保存在磷酸盐缓冲液中,会降低信号强度。
•蛋白上样量或表达水平较低。应使用总蛋白染色剂对凝胶进行染色,检测凝胶的总蛋白含量(见使用手册第13页)。至少上样1 pmole的His标签融合蛋白进行检测。应确保His标签是框内融合[读码框正确],并且蛋白表达正常。

InVision His-Tag In-Gel Stain能否用于E-PAGE凝胶染色?

由于E-PAGE凝胶比标准小型凝胶更厚,因此,使用InVision His-Tag In-Gel Stain染色会产生过强的背景。为获得更好的染色灵敏度,我们建议先将E-PAGE凝胶上的蛋白质转印到硝化纤维素膜上,然后根据使用手册第14页的说明使用InVision His-tag In-gel Stain对印迹膜进行染色。

经过InVision His-Tag In-Gel Stain染色的His标签融合蛋白,能否用于免疫印迹分析?

为了将经过InVision His-Tag In-Gel Stain染色的His标签融合蛋白用于免疫印迹分析,应该

•在His标签融合蛋白染色后,记录凝胶的永久性图像
•将凝胶置于1X SDS电泳缓冲液中平衡1小时。
•使用所选方法进行免疫印迹分析和免疫检测。

引用和文献 (3)

引用和文献
Abstract
Novel determinant of PKC-epsilon anchoring at cardiac Z-lines.
Authors:Robia SL, Kang M, Walker JW,
Journal:Am J Physiol Heart Circ Physiol
PubMed ID:15964917
'The Z-line represents a critical link between the transverse tubule network and cytoskeleton of cardiac cells with a role in anchoring structural proteins, ion channels, and signaling molecules. Protein kinase C-epsilon (PKC-epsilon) regulates cardiac excitability, cardioprotection, and growth, possibly as a consequence of translocation to the Z-line/T tubule region. To ... More
Dss1 interaction with Brh2 as a regulatory mechanism for recombinational repair.
Authors:Zhou Q, Kojic M, Cao Z, Lisby M, Mazloum NA, Holloman WK,
Journal:Mol Cell Biol
PubMed ID:17261595
Brh2, the BRCA2 ortholog in Ustilago maydis, enables recombinational repair of DNA by controlling Rad51 and is in turn regulated by Dss1. Interplay with Rad51 is conducted via the BRC element located in the N-terminal region of the protein and through an unrelated domain, CRE, at the C terminus. Mutation ... More
A conserved inverted repeat, the LipR box, mediates transcriptional activation of the Streptomyces exfoliatus lipase gene by LipR, a member of the STAND class of P-loop nucleoside triphosphatases.
Authors:Evangelista-Martínez Z, González-Cerón G, Servín-González L,
Journal:J Bacteriol
PubMed ID:17015647
Expression of the Streptomyces exfoliatus lipA gene, which encodes an extracellular lipase, depends on LipR, a transcriptional activator that belongs to the STAND class of P-loop nucleoside triphosphatases. LipR is closely related to activators present in some antibiotic biosynthesis clusters of actinomycetes, forming the LipR/TchG family of regulators. In this ... More