纯度 | >90%SDS-PAGE. |
种属 | Human |
靶点 | OVA |
Uniprot No | O00421 |
内毒素 | < 0.01EU/μg |
表达宿主 | E.coli |
表达区间 | 1-344aa |
氨基酸序列 | MANYTLAPEDEYDVLIEGELESDEAEQCDKYDAQALSAQLVPSLCSAVFVIGVLDNLLVVLILVKYKGLKRVENIYLLNLAVSNLCFLLTLPFWAHAGGDPMCKILIGLYFVGLYSETFFNCLLTVQRYLVFLHKGNFFSARRRVPCGIITSVLAWVTAILATLPEFVVYKPQMEDQKYKCAFSRTPFLPADETFWKHFLTLKMNISVLVLPLFIFTFLYVQMRKTLRFREQRYSLFKLVFAIMVVFLLMWAPYNIAFFLSTFKEHFSLSDCKSSYNLDKSVHITKLIATTHCCINPLLYAFLDGTFSKYLCRCFHLRSNTPLQPRGQSAQGTSREEPDHSTEV |
预测分子量 | 39,5 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3条与重组OVA蛋白相关的参考文献示例(注:以下内容为假设性示例,实际文献需通过学术数据库查询验证):
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1. **文献名称**: *"High-level expression and purification of recombinant chicken ovalbumin in Escherichia coli for immunological studies"*
**作者**: Smith J, et al.
**摘要**: 本研究报道了利用大肠杆菌表达系统高效表达重组鸡卵白蛋白(OVA),并通过亲和层析纯化获得高纯度蛋白。实验证明该重组OVA能够在小鼠模型中诱导特异性抗体反应,适用于疫苗研发及免疫应答机制研究。
2. **文献名称**: *"Yeast-derived recombinant ovalbumin as a tool for studying antigen presentation in dendritic cells"*
**作者**: Lee H, et al.
**摘要**: 通过毕赤酵母系统表达重组OVA蛋白,并验证其与哺乳动物来源OVA的结构和功能相似性。研究表明,酵母表达的OVA可有效被树突状细胞摄取并提呈,为感染或肿瘤免疫研究提供了标准化抗原工具。
3. **文献名称**: *"Comparative analysis of recombinant ovalbumin produced in different expression systems for allergy research"*
**作者**: Zhang Y, et al.
**摘要**: 对比昆虫细胞、哺乳动物细胞及原核系统表达的重组OVA的翻译后修饰差异,发现糖基化模式显著影响OVA的过敏原性。结果为食物过敏模型中抗原选择提供了关键依据。
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如需实际文献,建议在PubMed或Web of Science中检索关键词:**"recombinant ovalbumin" + "expression" / "immune response" / "allergy"**。
Ovalbumin (OVA), a glycoprotein comprising approximately 385 amino acids, is the predominant protein in egg white, accounting for 54–60% of its total protein content. As a member of the serpin (serine protease inhibitor) superfamily, OVA exhibits structural homology with protease inhibitors, though its primary biological role in eggs is nutrient storage for embryonic development. Its molecular weight is approximately 45 kDa, with a characteristic phosphorylated site and a single N-linked glycosylation site, contributing to its stability and solubility.
Recombinant OVA is produced using heterologous expression systems such as *E. coli*, yeast, insect, or mammalian cells. These systems enable scalable, animal-free production while retaining key immunological and biochemical properties of native OVA. Genetic engineering allows modifications, including epitope tagging, mutagenesis, or fusion with other proteins, to tailor OVA for specific research or therapeutic applications. For instance, recombinant OVA is widely utilized as a model antigen in immunology to study T-cell responses, vaccine efficacy, and immune tolerance due to its well-defined immunodominant epitopes (e.g., OVA257–264 for MHC-I presentation).
In biomedical research, recombinant OVA serves as a tool for drug delivery studies, allergenicity testing, and molecular chaperone investigations. Its low toxicity and high biocompatibility make it suitable for nanoparticle conjugation or as a carrier protein. Additionally, OVA-derived peptides are critical in cancer immunotherapy research, particularly in dendritic cell-based vaccines.
The shift to recombinant production addresses ethical and batch variability concerns associated with egg-derived OVA, ensuring reproducibility in experimental and clinical settings. Advances in expression systems continue to enhance yield and post-translational modification fidelity, solidifying recombinant OVA’s role as a versatile reagent in both basic science and translational applications.
在生物科技领域,蛋白研发与生产是前沿探索的关键支撑。艾普蒂作为行业内的创新者,凭借自身卓越的研发实力,每年能成功研发 1000 多种全新蛋白,在重组蛋白领域不断突破。 在重组蛋白生产过程中,艾普蒂积累了丰富且成熟的经验。从结构复杂的跨膜蛋白,到具有特定催化功能的酶、参与信号传导的激酶,再到用于免疫研究的病毒抗原,艾普蒂都能实现高效且稳定的生产。 这一成就离不开艾普蒂强大的技术平台。我们构建了多元化的重组蛋白表达系统,昆虫细胞、哺乳动物细胞以及原核蛋白表达系统协同运作。不同的表达系统各有优势,能够满足不同客户对重组蛋白的活性、产量、成本等多样化的需求,从而提供高品质、低成本的活性重组蛋白。 艾普蒂提供的不只是产品,更是从源头到终端的一站式解决方案。从最初的基因合成,精准地构建出符合要求的基因序列,到载体构建,为蛋白表达创造适宜的环境,再到蛋白质表达和纯化,每一个环节都严格把控。我们充分尊重客户的个性化需求,在表达 / 纯化标签的选择、表达宿主的确定等方面,为客户量身定制专属方案。 同时,艾普蒂还配备了多种纯化体系,能够应对不同特性蛋白的纯化需求。这种灵活性和专业性,极大地提高了蛋白表达和纯化的成功率,让客户的研究项目得以顺利推进,在生物科技的探索道路上助力每一位科研工作者迈向成功。
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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