Mfg Part Number
Ab04107-1.1
Vector Labs Ab04107-1.1 Anti-IgG [RF61], Mouse IgG1, lambda (100 μg)
Quick Overview
The original antibody was produced by an Epstein Barr virus (EBV)-transformed B-cell line prepared from peripheral CD5+ blood lymphocytes of a Gm(a-), (x-), (b+), (g-), (f+) patient with classical rheumatoid arthritis (RA).
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| Product Class: | Purified |
|---|---|
| Clone ID: | RF61 |
| Synonyms: | IgG1; IgG2; IgG3; IgG4; Immunoglobulin G; Immunoglobulin gamma-1; Immunoglobulin G subclass 1; Immunoglobulin gamma-2; Immunoglobulin G subclass 2; Immunoglobulin gamma-3; Immunoglobulin G subclass 3; Immunoglobulin gamma-4; Immunoglobulin G subclass 4; 274.RA.F4; RF mAb 61; mAb 61 |
| Amount: | 100 μg |
| Application Codes Clone: | ELISA; HA |
| Shipping Temperature: | Wet Ice |
| Origin Pub PMID: | 17395205 |
| Buffer Composition: | PBS with 0.02% Proclin 300. |
| Original Format: | IgM |
| 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 IgM format, for improved compatibility with existing reagents, assays and techniques. |
| Specificity Statement: | This antibody is specific for the C-terminal (Cγ3) end of the Fc region of IgG1, -2, and -3, with ~10-fold lower affinity for IgG4. This antibody's binding to IgG Fc is non-inhibitable by S. aureus protein A (SpA), which binds IgG Fc at the Cγ2–Cγ3 interface; this antibody's epitope is almost as far as physically possible from the antigen-combining site of IgG and is also remote from the functional sites responsible for FcγR or C1q binding (in Cγ2) and from the N-linked carbohydrate, also in Cγ2. |
| Application Notes: | The binding activity of this antibody's original format (human IgM) to IgG Fc fragments was measured by ELISA, and a dissociation constant (Kd) of 6.0×10-7 M was calculated (Burastero et al., 1988; PMID: 3264319). This antibody exhibited strong reactivity with both monoclonal and polyclonal human anti-Rh IgG antibodies bearing the Gm(a) or Gm(g) specificity in hemagglutination assays (HAs), displaying a higher affinity for Gm(g). Additionally, it demonstrated efficient binding to heat-altered autologous Gm(a-), (g-) IgG and exhibited heteroclitic specificity at the clonal level in an autologous system (Williams Jr et al., 1992; PMID: 1380541). The binding of this antibody's original format to human IgG subclasses as measured by ELISA demonstrated that its binding specificity is IgG1~IgG2~IgG3>IgG4 (Duquerroy et al., 2007; PMID: 17395205). |
| Brand | Vector Labs |
|---|---|
| UNSPSC | 12161500 |