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一般描述
泛素是一种高度保守的球蛋白，表面有赖氨酸。C末端包含Leu-Arg-Gly-Gly结构基序。
应用
N端FLAG标签泛素可取代泛素，用于形成多聚泛素-蛋白结合物。FLAG标签可用于在抗-FLAG亲和柱上分离和富集蛋白结合物，以及在蛋白免疫印迹法中通过抗-FLAG抗体检测结合物。
人泛素可用作质谱的标准品。
人类泛素已用于酵母增殖细胞核抗原(PCNA)的单泛素化 和有丝分裂阻滞1（Dma1）缺陷的体外泛素化测定
生化/生理作用
泛素是存在于真核细胞组织中的小调节蛋白。外源性泛素可刺激许多细胞系中的细胞凋亡。 人乳头瘤病毒-16的E7蛋白可通过泛素-蛋白酶体途径刺激视网膜母细胞瘤蛋白的降解。
泛素通过其C末端甘氨酸残基的ε-氨基与蛋白质的赖氨酸残基相互作用。与泛素相互作用的蛋白质通过一个三步过程进行单泛素化（mono-ubiquitination）或多单泛素化（multi-mono-ubiquitination）。泛素化调节细胞内运输和蛋白质降解，并且该途径的失衡与疾病有关。
包装
包装尺寸基于蛋白质含量
制备说明
人泛素可以以10.00-11.00mg/ml的浓度溶解在0.05M Tris-HCl中，得到澄清至轻微浑浊的无色溶液。
法律信息
FLAG is a registered trademark of Merck KGaA, Darmstadt, Germany
WGK
WGK 3
闪点(°F)
Not applicable
闪点(°C)
Not applicable
个人防护装备
Eyeshields, Gloves, type N95 (US)
法规信息
常规特殊物品
Boris Macek et al.
Molecular & cellular proteomics : MCP, 5(5), 949-958 (2006-02-16)
Top-down proteomics, the analysis of intact proteins (instead of first digesting them to peptides), has the potential to become a powerful tool for mass spectrometric protein characterization. Requirements for extremely high mass resolution, accuracy, and ability to efficiently fragment large
Ana Camara-Artigas et al.
Acta crystallographica. Section F, Structural biology communications, 72(Pt 1), 29-35 (2016-01-12)
Ubiquitin is a small globular protein that has a considerable number of lysine residues on its surface. This results in a high surface entropy that precludes the formation of crystal-packing interactions. To date, only a few structures of the native
David Komander
Biochemical Society transactions, 37(Pt 5), 937-953 (2009-09-17)
Protein ubiquitination and protein phosphorylation are two fundamental regulatory post-translational modifications controlling intracellular signalling events. However, the ubiquitin system is vastly more complex compared with phosphorylation. This is due to the ability of ubiquitin to form polymers, i.e. ubiquitin chains
Sara Hernández-Ortega et al.
The Journal of biological chemistry, 288(7), 4704-4714 (2012-12-25)
Progression through the G(1) phase of the cell cycle is controlled by diverse cyclin-dependent kinases (CDKs) that might be associated to numerous cyclin isoforms. Given such complexity, regulation of cyclin degradation should be crucial for coordinating progression through the cell
H Daino et al.
Blood, 95(8), 2577-2585 (2001-02-07)
The ubiquitin-proteasome pathway is responsible for selective degradation of short-lived cellular proteins and is critical for the regulation of many cellular processes. We previously showed that ubiquitin (Ub) secreted from hairy cell leukemia cells had inhibitory effects on clonogenic growth
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