Recombinant Human UbcH2/UBE2H 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.
E2-607
| Formulation | X mg/ml (X μM) in 50 mM HEPES pH 7.5, 200 mM NaCl,10% Glycerol (v/v), 1 mM TCEP. |
| Shipping | The product is shipped with dry ice or equivalent. 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: UbcH2/UBE2H
Ubiquitin-conjugating Enzyme H2 (UbcH2), also known as Ubiquitin-conjugating Enzyme E2H (UBE2H), is a member of the Ubiquitin-conjugating (E2) enzyme family (1). The human protein shares 100% amino acid sequence identity with the mouse and rat orthologs. Human UbcH2/UBE2H is highly expressed in skeletal and cardiac muscle, shows significant expression levels in kidney and placenta, and is expressed at low levels in liver, brain, lung, and spleen (2). TNF-alpha induces UbcH2/UBE2H expression via NF-kappa B, and SCL/Tal1 upregulates the expression of UbcH2/UBE2H during erythroid differentiation (2,3). Pathologically, a single nucleotide polymorphism within UbcH2/UBE2H is associated with autism (4). Furthermore, UbcH2/UBE2H has been reported as a putative oncogene for liver tumorigenesis (5).
- Kaiser, P. et al. (1994) J. Biol. Chem. 269:8797.
- Li, Y.P. et al. (2003) FASEB J. 17:1048.
- Lausen, J. et al. (2010) J. Biol. Chem. 285:5338.
- Vourc"h, P. et al. (2003) Psychiatr. Genet. 13:221.
- Keng, V.W. et al. (2009) Nat. Biotechnol. 27:264.
Citations for Recombinant Human UbcH2/UBE2H Protein, CF
R&D Systems personnel manually curate a database that contains references using R&D Systems products.The data collected includes not only links to publications in PubMed,but also provides information about sample types, species, and experimental conditions.
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- Tissue-specific Ubiquitination by IPA1 INTERACTING PROTEIN 1 Modulates IPA1 Protein Levels to Regulate Plant Architecture in RiceAuthors: J Wang, H Yu, G Xiong, Z Lu, Y Jiao, X Meng, G Liu, X Chen, Y Wang, J LiPlant Cell, 2017;0(0):.Applications: Bioassay
- TRIM16 acts as an E3 ubiquitin ligase and can heterodimerize with other TRIM family members.Authors: Bell JL, Malyukova A, Holien JKPLoS ONE, 2012;7(5):e37470.Species: HumanSample Types: Cell LysatesApplications: Bioassay
FAQs
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1) 物素N—羟基丁二酰亚胺酯(biotinyl-N-hydroxy-succinnimideBNHS)制备:
取物素1g混悬于12 mlN,N-二甲基甲酰胺(DMF)加0.6g N-羟基丁二酰亚胺(HOSU)0. 8 g二环基碳二亚胺(DCC)置于密闭容器内室温磁力搅拌作用夜滤滤液经旋转蒸干加10mL乙醚洗涤继加200 ml异丙醇使其重结晶获白色粉末状晶体
BNHS酯键-C=0基团与蛋白质赖氨酸氨基结合使物素标记蛋白含赖氨酸残基越或蛋白质等电点pI 6.0其标记效越BNHS适用于标记抗体及性偏碱性抗原
河南省郑州市所以食品添加剂有限公司 维生素H1价格 [未实名认证] 国产 1*20 435 元/kg
叶酸和生物素都属于B族维生素,
对维持机体的生理功能有重要作用。
现配现用
链接很容易,就用EDC或者CMC等碳二亚胺,是最容易在羧基和氨基之间催化形成酰胺键,反应条件就是0到4度,过夜,用磁力搅拌子温和搅拌,pH<7反应快,不过pH=7或稍微pH>7也关系不大。EDC或者CMC等碳二亚胺催化活性极高,而且一般的蛋白质的分子表面总有Lys,Arg,Asn,Gln,所以游离在分子表面的羧基和氨基总是不少的,参与反应的两种蛋白质用大致10:1的比例混合(哪种蛋白质便宜,哪种蛋白质的物质的量就大些,但是这不是全部原因),反应样品浓度就按照平时使用时的浓度或略微更低浓度(别用储存液的浓度)即可。很容易反应,而且EDC或者CMC等碳二亚胺是零臂连接试剂,用于空间位阻,形成多分子交联可能较小,即使形成了也很容易用分子筛层析按照分子量区分开。
参与反应的两种蛋白质用大致10:1的比例混合(哪种蛋白质便宜,哪种蛋白质的物质的量就大些,但是这不是全部原因),为了避免两种蛋白质之间发生交联成为串联,因为一种蛋白质形成串联的可能性低一些;即使要形成串联的蛋白质串珠,最好也不要是价格高的那种;另外,EDC或者CMC等碳二亚胺催化活性极高,室温下即会催化,所以要在0到4度,过夜,用磁力搅拌子温和搅拌,一方面避免碳二亚胺催化活性太高形成串联的蛋白质串珠,另一方面,保护蛋白质不变性;反应样品浓度就按照平时使用时的浓度或略微更低浓度(别用储存液的浓度)即可,为什么?因为浓度高了更易形成串联的蛋白质串珠结构,浓度低了,没有反应成功,通过分子筛层析还可以分离出来接着连接,如果形成了酰胺键再要专一性切开就没有那么容易了。

