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分子别名（Synonym）
LGR4, GPR48, G-protein coupled receptor 48, Leucine-rich repeat-containing G-protein coupled receptor 4
表达区间及表达系统（Source）
Human LGR4, His Tag (LG4-H52H3) is expressed from human 293 cells (HEK293). It contains AA Ala 25 -Thr 544 (Accession # Q9BXB1-1).
Request for sequence蛋白结构（Molecular Characterization）
This protein carries a polyhistidine tag at the C-terminus.
The protein has a calculated MW of 58.8 kDa. The protein migrates as 70-100 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
内毒素（Endotoxin）
Less than 1.0 EU per μg by the LAL method / rFC method.
纯度（Purity）
>85% as determined by SDS-PAGE.
制剂（Formulation）
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.
Contact us for customized product form or formulation.
重构方法（Reconstitution）
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
存储（Storage）
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
- -20°C to -70°C for 12 months in lyophilized state;
- -70°C for 3 months under sterile conditions after reconstitution.
质量管理控制体系（QMS）
数据展示
电泳（SDS-PAGE）
Human LGR4, His Tag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 85%.
活性（Bioactivity）-ELISA
Immobilized Human R‑Spondin 3 at 2 μg/mL (100 μL/well) can bind Human LGR4, His Tag (Cat. No. LG4-H52H3) with a linear range of 10-78 ng/mL (QC tested).
Protocol
活性（Bioactivity）-SPR
Human R-Spondin 3 immobilized on CM5 Chip can bind Human LGR4, His Tag (Cat. No. LG4-H52H3) with an affinity constant of 0.394 μM as determined in a SPR assay (Biacore T200) (Routinely tested).
Protocol
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