Mouse 20S Proteasome Protein, CF Summary
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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.
E-355
| Formulation | X mg/ml (X μM) in 50 mM HEPES pH 7.6, 150 mM NaCl, 1 mM DTT. |
| 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: 20S Proteasome
The 20S Proteasome is the catalytic core component of the multi-complex 26S Proteasome that selectively degrades intracellular proteins. It is commonly associated with regulatory complexes, which include the 19S Proteasome, the PA28 alpha/beta complex, or the PA28 gamma complex (1). The 20S Proteasome is composed of 28 subunits arranged into four stacked rings (2,3). The outer rings, containing seven subunits each, are composed of closely-related but non-identical alpha subunits. The amino-terminal tails of the alpha subunits form a gate that restricts substrate entry into the catalytic core. The inner rings, also containing seven subunits each, are composed of closely-related but non-identical beta subunits. The amino-terminal tails of six of the beta subunits, three per ring, have proteolytic activity. Inhibition of 20S Proteasome proteolytic core activity using small molecule inhibitors is a valuable tool for the functional study of a variety of proteins and for therapeutic intervention (4). The 20S Proteasome can be activated chemically by the addition of detergent or by the proteinaceous activator PA28 Activator alpha (5).
- Stadtmueller, B.M. & C.P. Hill (2011) Mol. Cell 41:8.
- Kim, H.M. et al. (2011) Biochim. Biophys. Acta 1809:67.
- Xie, Y. (2010) J. Mol. Cell Biol. 2:308.
- Kisselev, A.F. et al. (2012) Chem. Biol. 19:99.
- Ma, C.P. et al. (1992) J. Biol. Chem. 267:10515.
Citations for Mouse 20S Proteasome 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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- Effect of Fish Oil vs. Resolvin D1, E1, Methyl Esters of Resolvins D1 or D2 on Diabetic Peripheral NeuropathyAuthors: A Obrosov, LJ Coppey, H Shevalye, MA YorekJ Neurol Neurophysiol, 2017;8(6):.Species: MouseSample Types: Tissue HomogenatesApplications: Bioassay
- Denervation-Induced Activation of the Standard Proteasome and ImmunoproteasomePLoS ONE, 2016;11(11):e0166831.Species: MouseSample Types: Whole TissueApplications: Bioassay
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1、纳豆激酶是在纳豆发酵过程中由纳豆枯草杆菌(Bacillus subtilisl natto)产生的一种丝氨酸蛋白酶（单链多肽酶），分子量为27728道尔顿。
2、纳豆激酶在温度超过80℃时迅速变性失活，但反复冻融对其影响不大。
3、纳豆激酶在PH值从7升至12时，10min内稳定；PH值低于5时，迅速变性失活。胃酸环境中的PH值只有1.2到2之间，纳豆激酶根本无法通过。
4、纳豆激酶与粘性物质混合后，在PH值2-3的酸性环境中，还能保持不超过7.5%的活性。
5、纳豆激酶是大分子的单链多肽酶，可被肠道消化液（糜蛋白酶、胰蛋白酶、小肠液等）分解成氨基酸片段或分子量更小的肽链。
纳豆一词源于日本，是日本发酵食品，源自中国的咸豆豉，但并非中国豆豉，而是由黄豆通过纳豆菌（枯草杆菌）发酵制成豆制品，具有黏性，气味较臭，味道较甜，不仅保有黄豆的营养价值、富含维生素K2、提高蛋白质的消化吸收率，更重要的是发酵过程产生了多种生理活性物质，具有溶解体内纤维蛋白及其他调节生理机能的保健作用。
磷酸肌酸激酶（CPK），主要存在于骨骼肌和心肌，在脑组织中也存在，是参与体内的能量代谢的一种酶。在临床上主要用于诊断心肌梗塞。心肌梗塞患者发病后2－4小时，血液中此酶活动即开始升高。比血清中谷草转酸酶和乳酸脱氢酶的活力变化都出现得早。
临床意义：
（1）心肌梗塞后，CPK较谷草转氨酶和乳酸脱氢酶特异性高，但持续时间短，2－4天恢复正常。
（2）病毒性心肌炎，CPK也可升高，对诊断及预后有参考价值。
（3）进行性肌营养不良、多发性肌炎以及肌肉损伤时CPK也可升高。
（4）严重的心绞痛、心包炎、房颤、脑血管意外、脑膜炎以及心脏手术等，CPK可见升高。
根据PTK是否存在于细胞膜受体可将其分成受体型和非受体型。向左转|向右转
