纯度 | >90%SDS-PAGE. |
种属 | Human |
靶点 | Plaa |
Uniprot No | P27612 |
内毒素 | < 0.01EU/μg |
表达宿主 | E.coli |
表达区间 | 495-584aa |
氨基酸序列 | TGAGRYMPGSAGMDTTMTGVDPFTGNSAYRSAASKTVNIYFPKKEALTFDQANPTQILGKLKELNGTAPEEKKLTEDDLVLLEKILSLIC |
预测分子量 | 13.6 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. |
以下为虚构的示例参考文献,供参考学习(实际文献请通过学术数据库检索):
1. **标题**: "Recombinant PLAA Protein Enhances Phospholipase A2 Activity in Inflammatory Response"
**作者**: Smith J, et al.
**摘要**: 本研究在大肠杆菌系统中成功表达并纯化了重组PLAA蛋白,验证了其通过激活磷脂酶A2(PLA2)促进花生四烯酸释放的功能,揭示了PLAA在炎症信号通路中的关键作用。
2. **标题**: "Structural Characterization of PLAA and Its Role in Protein Aggregation Diseases"
**作者**: Chen L, et al.
**摘要**: 通过X射线晶体学解析了重组PLAA蛋白的三维结构,发现其与泛素结合域的相互作用,为研究PLAA在神经退行性疾病(如亨廷顿病)中调控蛋白聚集的机制提供了结构基础。
3. **标题**: "Development of a Mammalian Cell Expression System for High-Yield PLAA Production"
**作者**: García R, et al.
**摘要**: 开发了一种基于HEK293细胞的重组PLAA蛋白高效表达系统,优化后的工艺使蛋白产量提升5倍,并证实其生物活性适用于药物筛选及功能研究。
4. **标题**: "PLAA Knockdown and Recombinant Rescue in Zebrafish Inflammation Models"
**作者**: Tanaka K, et al.
**摘要**: 利用斑马鱼模型证明,重组PLAA蛋白可逆转PLAA基因敲低导致的炎症反应缺陷,为靶向PLAA的免疫调节疗法提供了体内实验依据。
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**提示**:如需真实文献,建议使用以下关键词在PubMed或Web of Science检索:
`"PLAA protein recombinant"`、`"Phospholipase A2 activating protein expression"`、`"PLAA inflammation"`。注意区分基因名PLAA(Proline-rich coiled-coil 2A, 曾用名)与其他缩写。
Plaa (Phospholipase A2-activating protein) is a multifunctional protein implicated in various cellular processes, including inflammation, proteostasis, and neurodegeneration. It was initially identified as a regulator of group IV cytosolic phospholipase A2 (cPLA2), enhancing the production of arachidonic acid and pro-inflammatory lipid mediators. Structurally, Plaa contains an N-terminal ubiquitin-associated (UBA) domain and a C-terminal ubiquitin-like (UBL) domain, which facilitate interactions with ubiquitinated proteins and proteasomal components. This architecture positions Plaa as a potential mediator of protein quality control, linking ubiquitination pathways to proteasomal degradation.
Recent studies highlight Plaa's role in neurodegenerative diseases, particularly in protein aggregation disorders. It interacts with misfolded proteins, such as mutant huntingtin in Huntington’s disease, and modulates their clearance via the ubiquitin-proteasome system (UPS) or autophagy. Plaa’s UBL domain is critical for recruiting proteasomal machinery, while its UBA domain may recognize polyubiquitinated substrates, suggesting a chaperone-like function in triaging damaged proteins. Dysregulation of Plaa has been associated with disrupted proteostasis, contributing to the accumulation of toxic aggregates observed in Alzheimer’s and Parkinson’s diseases.
Recombinant Plaa protein, produced through heterologous expression systems like *E. coli* or mammalian cells, is widely used to study these mechanisms *in vitro* and *in vivo*. Its purified form enables biochemical assays to map interaction networks, screen for modulators of proteostasis, or explore therapeutic strategies for neurodegenerative conditions. For instance, recombinant Plaa has been tested in cellular models to enhance clearance of pathogenic protein aggregates, demonstrating its potential as a research tool or therapeutic candidate. Ongoing research aims to unravel its dual roles in inflammation and neurodegeneration, offering insights into disease pathogenesis and targeted interventions.
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艾普蒂生物自主研发并建立综合性重组蛋白生产和抗体开发技术平台,包括: 哺乳动物细胞表达平台:利用哺乳动物细胞精准修饰蛋白,产出与天然蛋白相似的重组蛋白,用于药物研发、细胞治疗等。 杂交瘤开发平台:通过细胞融合筛选出稳定分泌单克隆抗体的杂交瘤细胞株,优化后的技术让抗体亲和力与特异性更高,应用于疾病诊断、免疫治疗等领域。 单 B 细胞筛选平台:FACS 用荧光标记和流式细胞仪快速分选特定 B 细胞;Beacon® 基于微流控技术,单细胞水平捕获、分析 B 细胞,挖掘抗体多样性,缩短开发周期。 凭借这些平台,艾普蒂生物为客户提供优质试剂和专业 CRO 技术服务,推动生物科技发展。
艾普蒂生物在重组蛋白和天然蛋白开发领域经验十分丰富,拥有超过 2 万种重组蛋白的开发案例。在四大重组蛋白表达平台的运用上,艾普蒂生物不仅经验老到,还积累了详实的成功案例。针对客户的工业化生产需求,我们能够定制并优化实验方案。通过小试探索、工艺放大以及条件优化等环节,对重组蛋白基因序列进行优化,全面探索多种条件,精准找出最契合客户需求的生产方法。 此外,公司还配备了自有下游验证平台,可对重组蛋白展开系统的质量检测与性能测试,涵盖蛋白互作检测、活性验证、内毒素验证等,全方位保障产品质量。 卡梅德生物同样重视蛋白工艺开发,确保生产出的蛋白质具备所需的纯度、稳定性与生物活性,这对于保障药物的安全性和有效性起着关键作用 ,与艾普蒂生物共同推动着行业的发展。
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