活性重组蛋白 Recombinant Mouse E-Selectin/CD62ECD62E/SELE Protein
活性重组蛋白 Recombinant Mouse E-Selectin/CD62ECD62E/SELE Protein
种 属:Mouse
商品编号:GX00370
商品库存:100支 浏览:1574 次
会员价格:¥980.00元
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研究方向    

    1. 分子特征与功能机制

    • 结构与表达
      • 基因定位:1q24.2(SELE基因),编码107 kDa的跨膜糖蛋白(UniProt ID: P16581),含:
        ✓ 凝集素结构域(介导白细胞结合)
        ✓ EGF样结构域(调控构象变化)
        ✓ 补体结合区(增强黏附稳定性)
      • 表达调控:TNF-α/IL-1β激活内皮细胞后4-6小时内表达达峰,半衰期约8小时。
    • 功能机制
      配体 结合细胞 生物学效应
      PSGL-1 中性粒细胞 介导滚动黏附
      ESL-1 髓系细胞 促进跨内皮迁移
      CD44 肿瘤细胞 助力血行转移

    2. 疾病关联与临床价值

    • 炎症性疾病
      • 动脉粥样硬化:斑块内皮E-Selectin高表达,促进单核细胞浸润。
      • 类风湿关节炎:滑膜血管E-Selectin水平与疾病活动度正相关(r=0.72)。
    • 肿瘤转移
      • 循环肿瘤细胞(CTC)捕获:通过E-Selectin涂层微流控芯片,CTC检出率提升40%。
    • 生物标志物
      • 可溶性E-Selectin(sCD62E):
        ✓ 糖尿病血管病变患者血清水平>50 ng/mL(正常<35 ng/mL)。


生物活性

Measured by the ability of the immobilized protein to support the adhesion of U937 human histiocytic lymphoma cells. When 5 x 10^4 cells/well are added to mouse E-Selectin/Fc Chimera coated plates (2 µg/mL with 100 µL/well), approximately 85-100% will adhere for 1 hourincubation atroom temperature.


Swiss Prot:
Q00690


种属:
Mouse


表达宿主:
293F


表达区间:
Trp22-Pro557


实际分子量:
110-
130 kDa


标签:
C-hFc&His tag


纯度:
>95% by SDS-PAGE.


内毒素:
<0.1EU/ug of the protein by LAL method.


制剂:
Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.4.Contact us for customized product form or formulation.


描述:
Recombinant Mouse Mouse E-Selectin/CD62E Protein is produced by 293F expression system. The target protein is expressed with sequence (Trp22-Pro557) of Mouse Mouse E-Selectin/CD62E (Accession Q00690) fused with a C-hFc&His tag.


储存:
Store at -20℃.Store the lyophilized protein at -20℃ to -80 ℃ up to 1 year from the date of receipt.
After reconstitution, the protein solution is stable at -20℃ for 3 months, at 2-8℃ for up to 1 week.
未开盖的干粉蛋白在 -20°C至-80°C可保存12个月;
复溶之后,蛋白溶液在-20°C及以下可保存3个月,在2-8℃可保存1周。


复溶:
Centrifuge the vial before opening. Reconstitute to a concentration of 0.1-0.5 mg/mL in sterile distilled water. Avoid vortex or vigorously pipetting the protein. For long term storage, it is recommended to add a carrier protein or stablizer (e.g. 0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose), and aliquot the reconstituted protein solution to minimize free-thaw cycles.
收到重组蛋白产品之后请检查蛋白冻干粉末是否贴于瓶底,如果粉末浮起,开盖之前请先低温离心。将蛋白用说明书中指定的缓冲液复溶至0.1-0.5 mg/mL(请注意蛋白复溶浓度不能低于0.1 mg/mL),室温平衡5-10 min保证充分溶解,复溶过程中请不要剧烈涡旋及吹打蛋白溶液。如需长期储存,建议复溶时添加载体蛋白或者稳定剂(如0.1% BSA, 5% HSA, 10% FBS 或者 5% 海藻糖),同时将复溶后的蛋白溶液按照需求进行分装,储存于-20°C至-80°C,随取随用,避免反复冻融。