Mfg Part Number
Ab01666-21.0
Vector Labs Ab01666-21.0 Anti-SARS-CoV S glycoprotein [4D4], Mouse IgM, kappa (50 μg)
Quick Overview
The original antibody was generated by immunizing a non human transgenic animal XENOMOUSE® IgG2k mice against S1 protein-Ig fragments (ectodomain) of the S Protein (Tor2).
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| Product Class: | Purified |
|---|---|
| Clone ID: | 4D4 |
| Synonyms: | Spike protein; S protein; SARS-CoV S protein; S glycoprotein; E2; Peplomer protein; Spike protein S1 |
| Amount: | 50 μg |
| Application Codes Clone: | NTRL; ELISA |
| Shipping Temperature: | Wet Ice |
| Buffer Composition: | PBS with 0.02% Proclin 300. |
| Original Format: | IgG2 |
| Storage Temperature: | Store at 4⁰C for up to 3 months. For longer storage, aliquot and store at -20⁰C. |
| Chimeric Use Statement: | This chimeric mouse antibody was made using the variable domain sequences of the original Human IgG2 format, for improved compatibility with existing reagents, assays and techniques. |
| Specificity Statement: | This antibody specifically binds the amino acids 318-510 in the S1 domain of the SARS-CoV Spike protein (Urbani strain). |
| Application Notes: | This antibody inhibits the association of SARS-CoV s protein to the angiotensin-converting enzyme 2 (ACE2) receptor by binding to specific amino acids on the S1 domain of the spike protein of the virus. The originally characterized antibody had a neutralizing titer 200TCID50 of 12.5 μg/ml (Coughlin et at.,2006). When incubated with S12–510- Fc recombinant protein it failed to block the interaction of this protein with the cellular receptor but inhibited a post-binding event and prevented viral entry. Combination of this antibody with another antibody 5D3, that binds to a different epitope resulted in increased inhibition of virus. The ability of mAb 4D4 to more efficiently inhibit viral entry when added post virus binding suggests that the S protein might undergo a conformational change following binding to ACE2 leading to unmasking of the epitope recognized by the 4D4 antibody. Simultaneously, 4D4 was also used in a standardentry inhibition assay as a positive control for determining the degree of inhibition of pseudotyped virus entry. (Coughlin et at.,2009). This antibody 4D4 showed about 50% binding to Sin845 S1 protein relative to their binding to Urbani S1 protein. GZ0402-S1 protein showed minimal of 57% binding to HmAbs 4D4 (Elshabrawy et al., 2012). Other applications include ELISA. |
| Brand | Vector Labs |
|---|---|
| UNSPSC | 12161500 |