膜杰作
Star Staining
分子别名（Synonym）
gH&gL&gO
表达区间及表达系统（Source）
HHV-5 (strain AD169) gH&gL&gO, Twin-Strep Tag&Tag Free&His Tag (GLO-H5283) is expressed from human 293 cells (HEK293). It contains AA Arg 24 - Leu 720 & Val 31 - Arg 278 & Lys 31 - Gln 466 (Accession # P12824 & P16832 & P16750).
Predicted N-terminus: Arg 24 & Val 31 & Lys 31
Request for sequence
蛋白结构（Molecular Characterization）
This protein carries a twin strep tag at the C-terminus. The protein has a calculated MW of 82.6 kDa | 27.6 kDa | 52.6 kDa. The protein migrates as 33 kDa,120-160 kDa and >180 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.
内毒素（Endotoxin）
Less than 1.0 EU per μg by the LAL method.
纯度（Purity）
>90% 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.
电泳（SDS-PAGE）
HHV-5 (strain AD169) gH&gL&gO, Twin-Strep Tag&Tag Free&His Tag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 90% (With Star Ribbon Pre-stained Protein Marker).
活性（Bioactivity）-ELISA
Immobilized Human PDGF R alpha, His Tag (Cat. No. PDA-H52H7) at 5 μg/mL (100 μL/well) can bind HHV-5 (strain AD169) gH&gL&gO, Twin-Strep Tag&Tag Free&His Tag (Cat. No. GLO-H5283) with a linear range of 5-39 ng/mL (QC tested).
Protocol
活性（Bioactivity）-SPR
Human PDGF R alpha, His Tag (Cat. No. PDA-H52H7) immobilized on CM5 Chip can bind HHV-5 (strain AD169) gH&gL&gO, Twin-Strep Tag&Tag Free&His Tag (Cat. No. GLO-H5283) with an affinity constant of 0.155 nM as determined in a SPR assay (Biacore 8K) (Routinely tested).
Protocol
背景（Background）
Human cytomegalovirus (HCMV), a prototypical beta-herpes virus, is a major cause of morbidity and mortality in immunocompromised transplant recipients and congenitally infected fetuses.Different HCMV glycoprotein complexes are capable of meditating entry through interaction with cell-specific receptors on a panel of host cells. The pentamer (gH/gL/UL128/UL130/UL131A) mediates HCMV entry into epithelial, endothelial, and myeloid cells by its binding to neuropilin 2 (Nrp2). The trimer (gH/gL/gO) can mediate infection of all cell types by binding to platelet-derived growth factor-alpha (PDGFRα). Both pentamer and trimer need to interact with the glycoprotein B (gB), the fusogenic protein, to trigger the virus and host cell membrane fusion.
