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糖蛋白gp330重组兔单抗
包装与价格:
产品名称 LRP2 Recombinant Rabbit mAb 产品介绍
糖蛋白gp330重组兔单抗 商品属性
产品介绍 中文名称糖蛋白gp330重组兔单抗 别 名LRP2_HUMAN; Low-density lipoprotein receptor-related protein 2; LDL receptor related protein 2; DBS; GP330; LRP-2; Glycoprotein 330(gp330); Megalin; 抗体来源Rabbit 克隆类型Recombinant 克 隆 号9C14 交叉反应Human,Mouse,Rat 产品应用WB=1:500-2000,IHC-P=1:100-500,IHC-F=1:100-500,IF=1:100-500,ICC/IF=1:50-200 not yet tested in other applications. optimal dilutions/concentrations should be determined by the end user. 理论分子量519 kDa 检测分子量 细胞定位细胞膜 性 状Liquid 浓 度1mg/ml 免 疫 原Recombinant mouse LRP2 protein: 4551-4660/4660 亚 型IgG 纯化方法affinity purified by Protein A 缓 冲 液0.01M TBS (pH7.4) with 1% BSA, 0.02% Proclin300 and 50% Glycerol. 保存条件Shipped at 4℃. Store at -20℃ for one year. Avoid repeated freeze/thaw cycles. 注意事项This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications. PubMedPubMed 产品介绍The protein encoded by this gene, low density lipoprotein-related protein 2 (LRP2) or megalin, is a multi-ligand endocytic receptor that is expressed in many different tissues but primarily in absorptive epithilial tissues such as the kidney. This glycoprotein has a large amino-terminal extracellular domain, a single transmembrane domain, and a short carboxy-terminal cytoplasmic tail. The extracellular ligand-binding-domains bind diverse macromolecules including albumin, apolipoproteins B and E, and lipoprotein lipase. The LRP2 protein is critical for the reuptake of numerous ligands, including lipoproteins, sterols, vitamin-binding proteins, and hormones. This protein also has a role in cell-signaling; extracellular ligands include parathyroid horomones and the morphogen sonic hedgehog while cytosolic ligands include MAP kinase scaffold proteins and JNK interacting proteins. Recycling of this membrane receptor is regulated by phosphorylation of its cytoplasmic domain. Mutations in this gene cause Donnai-Barrow syndrome (DBS) and facio-oculoacoustico-renal syndrome (FOAR).[provided by RefSeq, Aug 2009]. 靶点与功能
gp330(LRP2/Megalin)是一种单次跨膜糖蛋白,分子量约519kDa,属于低密度脂蛋白受体(LDLR)超家族,核心功能包括: 内吞受体作用:在肾脏近曲小管上皮细胞中高表达,介导小分子蛋白(如转铁蛋白、维生素D结合蛋白)的重吸收; 信号转导调控:通过结合Wnt、BMP等配体,参与胚胎发育、神经突触形成及肿瘤侵袭; 疾病关联:基因突变可导致Donnai-Barrow综合征(眼-脑-肾发育异常),在糖尿病肾病、阿尔茨海默病中表达异常。 实验操作关键要点
WB检测(组织/细胞裂解液): 样本处理:使用含1mM PMSF和蛋白酶抑制剂的RIPA裂解液冰上裂解30分钟,12000g离心15分钟取上清; 电泳条件:6% SDS-PAGE凝胶(低浓度胶分离大分子量蛋白),恒压60V浓缩胶、80V分离胶,转膜选用0.45μm PVDF膜(300mA恒流3小时); 抗体孵育:一抗1:1000稀释(5% BSA+TBST),4℃孵育过夜,HRP二抗(山羊抗兔)1:5000室温孵育1小时,曝光时间90-120秒(因分子量较大需延长曝光)。 IHC-P肾脏组织染色: 抗原修复:采用EDTA缓冲液(pH9.0) 高压修复5分钟(针对福尔马林固定石蜡切片),增强膜蛋白信号; 阳性定位:近曲小管上皮细胞细胞膜呈棕黄色线性阳性,与近端小管标志物(如AQP1)共定位验证; 对照设置:必须包含LRP2敲除小鼠肾脏组织(阴性对照)和正常小鼠肾脏皮质区(阳性对照)。 IF共定位实验: 细胞处理:肾小管上皮细胞(如HK-2)爬片,4%多聚甲醛固定15分钟,0.2% Triton X-100透化10分钟; 荧光标记:与溶酶体标志物(如LAMP1)或配体(如 cubilin)共染,使用Alexa Fluor 594偶联二抗(1:1000),共聚焦显微镜下观察膜共定位信号。 公司正在出售的产品
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