纯度 | >90%SDS-PAGE. |
种属 | Human |
靶点 | RNASEK |
Uniprot No | Q6P5S7 |
内毒素 | < 0.01EU/μg |
表达宿主 | E.coli |
表达区间 | 1-137aa |
氨基酸序列 | MGWLRPGPRPLCPPARASWAFSHRFPSPLAPRRSPTPFFMASLLCCGPKLAACGIVLSAWGVIMLIMLGIFFNVHSAVLIEDVPFTEKDFENGPQNIYNLYEQVSYNCFIAAGLYLLLGGFSFCQVRLNKRKEYMVR |
预测分子量 | 15,4 kDa |
蛋白标签 | His tag N-Terminus |
缓冲液 | PBS, pH7.4, containing 0.01% SKL, 1mM DTT, 5% Trehalose and Proclin300. |
稳定性 & 储存条件 | Lyophilized protein should be stored at ≤ -20°C, stable for one year after receipt. Reconstituted protein solution can be stored at 2-8°C for 2-7 days. Aliquots of reconstituted samples are stable at ≤ -20°C for 3 months. |
复溶 | Always centrifuge tubes before opening.Do not mix by vortex or pipetting. It is not recommended to reconstitute to a concentration less than 100μg/ml. Dissolve the lyophilized protein in distilled water. Please aliquot the reconstituted solution to minimize freeze-thaw cycles. |
以下是关于RNASEK重组蛋白的文献示例(注:因实际文献检索结果可能有限,以下为模拟内容,供参考):
1. **文献名称**: "Characterization of Recombinant RNASEK as a Lysosomal Endonuclease"
**作者**: Smith A, et al.
**摘要**: 该研究成功在大肠杆菌中表达并纯化了重组RNASEK蛋白,证实其具有RNA水解酶活性,定位在溶酶体中,可能在RNA降解和细胞稳态调控中发挥作用。
2. **文献名称**: "Structural Insights into RNASEK's Role in Viral RNA Sensing"
**作者**: Lee J, Kim T.
**摘要**: 通过X射线晶体学解析了重组RNASEK的三维结构,发现其具有独特的核酸结合域,可能参与宿主抗病毒免疫反应中的RNA识别与切割。
3. **文献名称**: "Functional Analysis of RNASEK in Lipid Metabolism"
**作者**: Chen L, et al.
**摘要**: 利用重组RNASEK蛋白进行体外实验,发现其与脂质代谢相关基因的mRNA存在相互作用,提示RNASEK可能在代谢疾病中具有潜在调控功能。
4. **文献名称**: "Optimization of RNASEK Expression in Mammalian Cells for Therapeutic Applications"
**作者**: Wang Y, et al.
**摘要**: 开发了一种哺乳动物细胞表达系统,高效生产具有生物活性的重组RNASEK蛋白,并验证其在基因治疗中作为RNA编辑工具的可行性。
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**注意**:以上内容为模拟示例,实际文献需通过PubMed、Google Scholar等平台检索关键词(如“RNASEK recombinant protein”或“RNASEK function”)获取。若需具体文献,请提供更详细的研究背景或作者信息。
RNASEK (Ribonuclease K) is a conserved endoribonuclease belonging to the RNase A superfamily, initially identified for its role in RNA metabolism and degradation. It is ubiquitously expressed in eukaryotic cells, particularly localized to endosomal and lysosomal compartments, where it contributes to RNA processing and turnover. Structurally, RNASEK contains a conserved catalytic triad (His-Lys-His) critical for its enzymatic activity, enabling cleavage of single-stranded RNA substrates.
Recent studies have linked RNASEK to innate immunity and viral defense mechanisms. It interacts with pattern recognition receptors (e.g., RIG-I-like receptors) to modulate antiviral signaling pathways, suggesting a dual role in RNA degradation and immune regulation. Additionally, RNASEK has been implicated in endocytic trafficking, where it associates with the V-ATPase complex to regulate endosomal acidification—a process essential for ligand-receptor dissociation and lysosomal function. Dysregulation of RNASEK is associated with impaired viral clearance, neurodegenerative disorders, and lysosomal storage diseases.
Recombinant RNASEK protein, typically produced in *E. coli* or mammalian expression systems, retains enzymatic activity and structural integrity for functional studies. Its applications span *in vitro* assays to dissect RNA degradation mechanisms, drug screening for antiviral therapies, and structural biology (e.g., crystallography) to elucidate substrate-binding motifs. Furthermore, recombinant RNASEK serves as a tool to investigate endosomal-lysosomal dysfunction in disease models. Despite its emerging significance, the full scope of RNASEK's biological roles and therapeutic potential remains under exploration, highlighting the need for further research into its molecular interactions and pathophysiological relevance.
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