膜杰作
Star Staining
抗体来源（Source）
Anti-SARS-CoV-2 Spike NTD Antibody, Chimeric mAb, Human IgG1 (AM121) (SPD-M121) is a chimeric monoclonal antibody combining the constant domains of the human IgG1 molecule with mouse variable regions.
亚型（Isotype）
Human IgG1/kappa
特异性（Specificity）
The cross-reactivity with other coronaviruses has not been tested yet.
纯度（Purity）
>95% as determined by SDS-PAGE.
内毒素（Endotoxin）
Less than 1.0 EU per μg by the LAL method.
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 to -70°C for 12 months in lyophilized state from date of receipt;
- -70°C for 3 months under sterile conditions after reconstitution.
电泳（SDS-PAGE）
Anti-SARS-CoV-2 Spike NTD Antibody, Chimeric mAb, Human IgG1 (AM121) on SDS-PAGE under reducing (R) and non-reducing (NR) conditions. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95%.
活性（Bioactivity）-ELISA
Immobilized SARS-CoV-2 S1 protein NTD, His Tag (Cat. No. S1D-C52H6) at 1 μg/mL (100 μL/well) can bind Anti-SARS-CoV-2 Spike NTD Antibody, Chimeric mAb, Human IgG1 (AM121) (Cat. No. SPD-M121) with a linear range of 0.2-2 ng/mL (QC tested).
Protocol
活性（Bioactivity）-SPR
Anti-SARS-CoV-2 Spike NTD Antibody, Chimeric mAb, Human IgG1 (AM121) (Cat. No. SPD-M121) captured on CM5 chip via Anti-human IgG Fc antibodies surface can bind SARS-CoV-2 S1 protein NTD, His Tag (Cat. No. S1D-C52H6) with an affinity constant of 74.6 nM as determined in a SPR assay (Biacore T200) (Routinely tested).
Protocol
活性（Bioactivity）-BLI
Loaded Anti-SARS-CoV-2 Spike NTD Antibody, Chimeric mAb, Human IgG1 (AM121) (Cat. No. SPD-M121) on AHC Biosensor, can bind SARS-CoV-2 S1 protein NTD, His Tag (Cat. No. S1D-C52H6) with an affinity constant of 39.8 nM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).
Protocol
背景（Background）
It's been reported that Coronavirus can infect the human respiratory epithelial cells through interaction with the human ACE2 receptor. The spike protein is a large type I transmembrane protein containing two subunits, S1 and S2. S1 mainly contains a receptor binding domain (RBD), which is responsible for recognizing the cell surface receptor. S2 contains basic elements needed for the membrane fusion.The S protein plays key parts in the induction of neutralizing-antibody and T-cell responses, as well as protective immunity.
