纯度 | > 90 % SDS-PAGE. |
种属 | Human |
靶点 | B2M |
Uniprot No | P61769 |
内毒素 | < 0.01EU/μg |
表达宿主 | E.coli |
表达区间 | 1-119aa |
氨基酸序列 | MSRSVALAVLALLSLSGLEAIQRTPKIQVYSRHPAENGKSNFLNCYVSGFHPSDIEVDLLKNGERIEKVEHSDLSFSKDWSFYLLYYTEFTPTEKDEYACRVNHVTLSQPKIVKWDRDM |
预测分子量 | 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B2M(β2-微球蛋白)重组蛋白的3篇代表性文献及其摘要概括:
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1. **文献名称**:*Production of recombinant human beta-2-microglobulin in Escherichia coli and its structural characterization*
**作者**:Smith A, et al.
**摘要**:本研究报道了通过大肠杆菌表达系统高效生产重组人B2M的方法,并利用核磁共振(NMR)分析了其三维结构,证实重组蛋白与天然B2M具有相同的构象和稳定性。
2. **文献名称**:*Role of beta-2-microglobulin in amyloid fibril formation: Insights from recombinant protein studies*
**作者**:Lee JH, et al.
**摘要**:通过体外实验验证重组B2M在透析相关淀粉样变性中的作用,发现特定理化条件(如酸性pH)下,重组B2M可自发形成淀粉样纤维,为疾病机制研究提供模型。
3. **文献名称**:*Enhancing MHC class I antigen presentation using engineered beta-2-microglobulin*
**作者**:Zhang Y, et al.
**摘要**:通过基因工程改造重组B2M,提高其与MHC I类分子的结合效率,从而增强肿瘤细胞表面抗原呈递,为癌症免疫治疗策略的开发提供了新思路。
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**备注**:以上文献为示例性质,实际文献需通过学术数据库(如PubMed、Web of Science)检索。若需具体文章,建议以关键词“recombinant beta-2-microglobulin”结合研究领域(如“amyloidosis”“MHC-I”“expression”)进一步筛选。
Beta-2-microglobulin (B2M), a 12-kDa protein encoded by the *B2M* gene, is a critical component of the major histocompatibility complex (MHC) class I molecules. These molecules are expressed on nearly all nucleated cells and play a central role in antigen presentation to immune cells, particularly cytotoxic T lymphocytes. Structurally, B2M non-covalently associates with the heavy chain of MHC class I, stabilizing its conformation and enabling peptide loading for immune surveillance. Beyond its immunological role, B2M is implicated in various pathological conditions. Elevated serum levels of B2M are observed in inflammatory diseases, autoimmune disorders, and certain cancers, making it a potential biomarker for disease progression or therapeutic response.
Recombinant B2M protein, produced via genetic engineering in systems like *E. coli* or mammalian cell cultures, retains the native protein's functional properties while enabling standardized production for research and clinical applications. Its recombinant form is widely used in structural studies to investigate MHC class I assembly mechanisms, in immunological assays to study T cell activation, and in cancer research to explore immune evasion strategies. Notably, B2M deficiency has been linked to impaired antigen presentation in tumors, a finding that has spurred interest in B2M-targeted therapies to enhance cancer immunotherapies.
In neurodegenerative contexts, B2M aggregation contributes to dialysis-related amyloidosis, driving research into recombinant B2M as a model for studying protein misfolding. Recent advances in protein engineering have also enabled the development of modified B2M variants for targeted drug delivery or as fusion partners in biotherapeutics. Despite its small size, B2M’s multifaceted roles in health and disease continue to make recombinant B2M a valuable tool for 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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