Recombinant Human His6-Ubiquitin Mutant K29R Protein, CF Summary
Product Datasheets
Carrier Free
CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins.Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration.The carrier free version does not contain BSA.
In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard.In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.
UM-HK29R
| Formulation | Lyophilized from a solution in HEPES. |
| Shipping | The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. |
| Stability & Storage: | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
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Reconstitution Calculator
Background: Ubiquitin
Ubiquitin is a 76 amino acid (aa) protein that is ubiquitously expressed in all eukaryotic organisms. Ubiquitin is highly conserved with 96% aa sequence identity shared between human and yeast Ubiquitin, and 100% aa sequence identity shared between human and mouse Ubiquitin (1). In mammals, four Ubiquitin genes encode for two Ubiquitin-ribosomal fusion proteins and two poly-Ubiquitin proteins. Cleavage of the Ubiquitin precursors by deubiquitinating enzymes gives rise to identical Ubiquitin monomers each with a predicted molecular weight of 8.6 kDa. Conjugation of Ubiquitin to target proteins involves the formation of an isopeptide bond between the C-terminal glycine residue of Ubiquitin and a lysine residue in the target protein. This process of conjugation, referred to as ubiquitination or ubiquitylation, is a multi-step process that requires three enzymes: a Ubiquitin-activating (E1) enzyme, a Ubiquitin-conjugating (E2) enzyme, and a Ubiquitin ligase (E3). Ubiquitination is classically recognized as a mechanism to target proteins for degradation and as a result, Ubiquitin was originally named ATP-dependent Proteolysis Factor 1 (APF-1) (2,3). In addition to protein degradation, ubiquitination has been shown to mediate a variety of biological processes such as signal transduction, endocytosis, and post-endocytic sorting (4-7).
Mutation of lysine 29 to arginine renders Ubiquitin unable to form poly-Ubiquitin chains via lysine 29 linkages with other Ubiquitinmolecules. Ubiquitin K29R can form a Ubiquitin-activating (E1) enzyme-catalyzed active thioester at the C-terminus allowing the molecule to be transferred to the lysines of substrate proteins. Ideal for the reduction in poly-Ubiquitin chain length/conjugation rates and determining if poly-Ubiquitin chains are K29 linked.
FAQs
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TAKARA的RR047A逆转录试剂盒，做逆转录程序设置错误本来应该37℃15min85℃5s，变成37℃15s，85℃
5s，请问再重新设置程序可以吗，85℃酶会全部失活吗？
2.模板浓度测定：分光光度计或NanoDrop
3.逆转录：逆转录试剂盒（或者一步法试剂盒），这一步可以用普通PCR做，也可以用水域做。
4.荧光定量PCR试剂：通常有用SYBRGreenMix做的，但是这里建议你用EvaGreen做，灵敏度和平行性都要好于SYBRGreen，并且如果你那是ABI或者Stratagene的PCR如果用SYBRGreen还需要加一步Rox很麻烦。
5.其他：除了以上的那些还需要离心管、PCR管或板（Axygen反应比较好）、移液枪等，暂时就想到这么多。
miRcute miRNA荧光定量检测试剂盒（ SYBR Green）中包含miRNA荧光定量检测的所有试剂，包括2×miRcute miRNA premix和Reverse primer.2×miRcute miRNA premix是专门为miRNA检测而研发的新一代荧光定量检测试剂，该检测试剂采用premix预混系统，包含了优化配比的dNTP、增强 剂、稳定剂等，且其中的DNA polymerase采用的是新一代抗体修饰的热启动技术，保证高特异性和高灵敏度。同时，还加入了 ROX作为内参染料，以使实时荧光定量PCR结果准确可靠。
产品特点
■ 通量高：可用于从一个合成反应的cDNA中 检测多种miRNAs.
■ 特异性：性能优良的抗体热启动PCR聚合酶技术及其优化的反应体系避免了非特异性扩增。
■ 分辨率高：能分辨单碱基差异的miRNA.
■ 灵敏度高：可在低至pg级的总RNA中检测到特异表达的miRNA.
适用范围
■ 对miRNA反转录后的cDNA进行荧光定量 PCR检测
■ 适用于各种类型荧光定量PCR仪
保存条件：4℃避光保存，避免冻结。
转录的只是插入的片断，怎么会跟模板一样大呢，一般情况下应该比模板小多了。我都是跑电泳，严格来说应该跑变性的；嫌麻烦可以非变性，快速（防止RNA降解）十分钟即可；抛出来的带会有两条，上面大的是模板，下面一条比较亮的是RNA，那么你的转录就 成功了。
PCR第一个步骤如果没记错的话应该叫“变性”， PCR的话是不需要解旋酶的，直接利用DNA的高温变性特性，在高温下，使氢键断开，DNA双链恢复为单链。 （还有解旋酶好像是解除双螺旋的结构，是一种拓扑异构酶，对于氢键的打开没有贡献吧
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加尾法是采用加A酶先对mirna进行加尾，然后再用带oligodt的引物反转录，他的反转录引物是通用的，一次反转录可以获得所有miRNA的cdna，效率高。茎环法是采用特异性反转录引物序列+颈环结构作为反转录引物进行反转录的，一次反转录只能获得一种mirna的cdna，可能有几种一起反转录的，这个我不太清楚一起反转录的效果。然后茎环法的经典即ABI的探针法定量试剂盒。我用过茎环法反转录+染料法定量的，下游引物为通用引物，结果不太好，就现在用的这家的他采用的是双向引物都是特异性的，效果还可以。不知道我说的清楚不，希望能对你有帮助。
