纯度 | >85%SDS-PAGE. |
种属 | Human |
靶点 | CD209 |
Uniprot No | Q9NNX6 |
内毒素 | < 0.01EU/μg |
表达宿主 | E.coli |
表达区间 | 1-404aa |
氨基酸序列 | MSDSKEPRLQQLGLLEEEQLRGLGFRQTRGYKSLAGCLGHGPLVLQLLSF TLLAGLLVQVSKVPSSISQEQSRQDAIYQNLTQLKAAVGELSEKSKLQEI YQELTQLKAAVGELPEKSKLQEIYQELTRLKAAVGELPEKSKLQEIYQEL TWLKAAVGELPEKSKMQEIYQELTRLKAAVGELPEKSKQQEIYQELTRLK AAVGELPEKSKQQEIYQELTRLKAAVGELPEKSKQQEIYQELTQLKAAVE RLCHPCPWEWTFFQGNCYFMSNSQRNWHDSITACKEVGAQLVVIKSAEEQ NFLQLQSSRSNRFTWMGLSDLNQEGTWQWVDGSPLLPSFKQYWNRGEPNN VGEEDCAEFSGNGWNDDKCNLAKFWICKKSAASCSRDEEQFLSPAPATPN PPPA |
预测分子量 | 72 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CD209(DC-SIGN)重组蛋白的3篇参考文献及其摘要概括:
1. **文献名称**:*DC-SIGN; a related gene, DC-SIGNR; and CD23 form a cluster on 19p13*
**作者**:Soilleux EJ, et al.
**摘要**:该研究报道了DC-SIGN基因的克隆及重组蛋白表达,分析了其与HIV-1病毒gp120蛋白的结合特性,揭示了其在病原体识别中的潜在作用。
2. **文献名称**:*C-type lectin DC-SIGN modulates Toll-like receptor signaling via Raf-1 kinase-dependent acetylation of transcription factor NF-κB*
**作者**:Gringhuis SI, et al.
**摘要**:通过重组DC-SIGN蛋白实验,揭示了其通过调控Raf-1激酶和NF-κB乙酰化影响TLR信号通路,阐明了其在天然免疫中的调控机制。
3. **文献名称**:*Structural basis for selective recognition of oligosaccharides by DC-SIGN and DC-SIGNR*
**作者**:Feinberg H, et al.
**摘要**:利用重组DC-SIGN蛋白的晶体结构分析,揭示了其碳水化合物识别结构域(CRD)与病原体表面寡糖的特异性结合模式,为靶向药物设计提供依据。
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**备注**:以上文献可在PubMed或专业期刊数据库(如Science、Nature Immunology)中通过标题或作者检索原文。若需具体出版信息,可进一步补充年份与期刊名称。
CD209. also known as DC-SIGN (Dendritic Cell-Specific Intercellular adhesion molecule-3-Grabbing Non-integrin), is a C-type lectin receptor predominantly expressed on the surface of dendritic cells (DCs) and certain macrophage subsets. It plays a critical role in pathogen recognition, immune modulation, and cell-cell interactions by binding to high-mannose glycans on viral, bacterial, and fungal surfaces. CD209 facilitates antigen capture and presentation, linking innate and adaptive immunity. Its interaction with pathogens like HIV-1. Ebola virus, and Mycobacterium tuberculosis highlights its significance in infectious disease mechanisms.
Recombinant CD209 protein is engineered using expression systems (e.g., mammalian, insect, or bacterial cells) to produce soluble, functional forms of the extracellular domain. This involves cloning the gene encoding the carbohydrate-recognition domain (CRD) and other essential motifs, followed by purification via affinity chromatography (e.g., His-tag or Fc-fusion strategies). The recombinant protein retains ligand-binding capacity, enabling studies on pathogen-host interactions, immune signaling, and receptor-ligand specificity.
In research, recombinant CD209 serves as a tool to investigate viral entry pathways, immune evasion strategies, and DC-mediated immune responses. It is also used to screen inhibitors or antibodies targeting CD209-pathogen interactions for therapeutic development. Additionally, it aids in structural studies (e.g., X-ray crystallography) to map binding interfaces and design glycan-based vaccines. Its applications extend to autoimmune and cancer research, given CD209's role in modulating T-cell activation and tumor microenvironment interactions. Overall, recombinant CD209 is vital for dissecting immune regulation and advancing antiviral or immunotherapeutic strategies.
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