Mfg Part Number
Ab05119-1.1
Vector Labs Ab05119-1.1 Anti-Capsular polysaccharide [C2/655.7], Mouse IgG1, kappa (100 μg)
Quick Overview
The original antibody was generated by immunizing female BALB/c mice with a group C N. Meningitidis (strain C11) oligosaccharide coupled to tetanus toxoid (MCPS-TT).
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| Product Class: | Purified |
|---|---|
| Clone ID: | C2/655.7 |
| Synonyms: | Capsular PS; meningococcal polysaccharide group C; serogroup C sialic acid containing capsular polysaccharides |
| Amount: | 100 μg |
| Application Codes Clone: | ELISA; FELISA; WB |
| Shipping Temperature: | Wet Ice |
| Origin Pub PMID: | 15589322 |
| Buffer Composition: | PBS with 0.02% Proclin 300. |
| Original Format: | IgG1 |
| Storage Temperature: | Store at 4⁰C for up to 3 months. For longer storage, aliquot and store at -20⁰C. |
| Specificity Statement: | This antibody is specific for the α(2→9) sialic‑acid backbone of N. meningitidis's serogroup C capsular polysaccharide. Its acidic pI (5.6–6.7) and shorter IgG1 hinge suggest it approaches the α(2→9) sialic‑acid backbone in a more electrostatically guided, compact orientation than Ab05121 [2016.3], one of our other anti–N. meningitidis group C capsular PS products. Its unique CDR composition also creates a subtly different paratope shape, so although both recognize the same motif, they likely bind from different angles or contact footprints on the polysaccharide chain. Functionally, this antibody shows ~30‑fold higher 50% binding affinity to OAc⁻ and ~10‑fold higher to MCPS. |
| Application Notes: | The original antibody format (Mouse IgG1) was generated and evaluated. Its specificity was determined by FELISA. It exhibited a binding pattern of OAc⁻ >> MCPS, with 50% binding observed at approximately 0.003 µg/mL and 0.3 µg/mL, respectively, under the assay conditions. This indicates a strong preference for the de‑O‑acetylated serogroup C capsular polysaccharide. The original antibody's pI was measured to be in the range of 5.6–6.7 (García-Ojeda et al., 2000; PMID: 10603394). Surface plasmon resonance analysis confirmed its higher avidity and preference for the OAc⁻ surface, although kinetic studies revealed short dissociation half-lives for both OAc+ and OAc⁻ surfaces (García-Ojeda, 2004; PMID: 15155652). This antibody was successfully used in a WB to detect OAc⁻ (Mosley et al., 2009; DOI: 10.3109/10242420903388694). |
| Brand | Vector Labs |
|---|---|
| UNSPSC | 12161500 |