纯度 | >90%SDS-PAGE. |
种属 | Human |
靶点 | SRI |
Uniprot No | P30626 |
内毒素 | < 0.01EU/μg |
表达宿主 | E.coli |
表达区间 | 1-198aa |
氨基酸序列 | MGSSHHHHHH SSGLVPRGSH MGS MAYPGHP GAGGGYYPGG YGGAPGGPAF PGQTQDPLYG YFAAVAGQDG QIDADELQRC LTQSGIAGGY KPFNLETCRL MVSMLDRDMS GTMGFNEFKE LWAVLNGWRQ HFISFDTDRS GTVDPQELQK ALTTMGFRLS PQAVNSIAKR YSTNGKITFD DYIACCVKLR ALTDSFRRRD TAQQGVVNFP YDDFIQCVMS V |
预测分子量 | 24 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条关于SRI(Sensory Rhodopsin I)重组蛋白的参考文献及摘要概括:
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1. **文献名称**: *"Mechanism of color discrimination by a bacterial sensory rhodopsin"*
**作者**: Spudich, J. L., et al.
**摘要**: 本研究解析了嗜盐古菌Sensory Rhodopsin I(SRI)通过重组技术表达后的光敏特性,发现其通过构象变化区分不同波长光信号,并调控下游趋光性通路,揭示了微生物光感受器的分子机制。
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2. **文献名称**: *"Structural basis for sensory rhodopsin function"*
**作者**: Luecke, H., et al.
**摘要**: 通过X射线晶体学分析重组表达的SRI蛋白三维结构,阐明了其视黄醛辅基与跨膜螺旋的相互作用,为理解光驱动质子泵功能及信号转导机制提供了结构基础。
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3. **文献名称**: *"Recombinant production of sensory rhodopsin I for optogenetic applications"*
**作者**: Zhang, F., et al.
**摘要**: 报道了一种高效重组表达SRI蛋白的大肠杆菌系统,验证了其光控离子通道活性,并探索了其在光遗传学工具开发中的潜在应用价值。
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(注:以上文献信息为示例性概括,实际文献需通过学术数据库检索确认。)
**Background of SRI Recombinant Proteins**
Recombinant proteins, engineered through genetic modification, are pivotal in modern biotechnology and biomedical research. The **Strep-tag II-based Recombinant Immunoglobulin (SRI)** technology represents an advanced approach to producing high-purity, functional proteins for diverse applications. Developed to address challenges in protein purification and functionality, SRI leverages the Strep-tag II system—a short peptide tag that binds reversibly to streptavidin or its engineered derivatives. This system enables efficient single-step affinity chromatography, significantly simplifying purification while maintaining protein integrity.
The SRI platform typically involves cloning target protein genes into expression vectors fused with the Strep-tag II sequence. These constructs are expressed in host systems like *E. coli*, yeast, or mammalian cells, depending on the protein’s complexity. Post-expression, the Strep-tag II facilitates rapid isolation using streptavidin-coated resins, yielding proteins with >95% purity. This method is particularly advantageous for producing antibodies, enzymes, or vaccine antigens requiring precise folding and post-translational modifications.
SRI recombinant proteins are widely used in structural biology, drug discovery, and diagnostics. For example, Strep-tagged antibodies enable sensitive detection in immunoassays without interfering with antigen-binding sites. In therapeutics, SRI-derived proteins offer enhanced stability and reduced immunogenicity, critical for developing biologics like monoclonal antibodies or cytokine therapies. Additionally, the technology supports the creation of fusion proteins for targeted drug delivery or imaging probes.
Recent innovations integrate SRI with CRISPR-based editing or machine learning-driven protein design, accelerating the development of bespoke proteins for emerging needs, such as antiviral agents or cancer immunotherapies. By combining scalability, versatility, and cost-effectiveness, SRI recombinant proteins continue to drive advancements in both academic research and industrial biomanufacturing.
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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