| Applications: |
ELISA |
| Reactivity: |
Human |
| Note: |
FOR SCIENTIFIC EDUCATIONAL RESEARCH USE ONLY (RUO). MUST NOT BE USED IN DIAGNOSTIC OR OTHER MEDICAL APPLICATIONS. |
| Sensitivity: |
0.94ng/mL |
| Detection Limit: |
1.56~100ng/mL |
| Short Description: |
This C4A Sandwich ELISA is an in-vitro enzyme-linked immunosorbent assay for the measurement of samples in human cell culture supernatant, serum and plasma (EDTA, citrate, heparin). |
| Storage Instruction: |
If unopened the kit may be stored at 2-8°C for up to 1 month. If the kit will not be used within 1 month, store the components separately, according to the component table in the manual. |
| Assay Time: |
3.5h |
| Detection: |
Colormetric |
| Gene Symbol: |
C4A |
| Gene ID: |
720/721 |
| Uniprot ID: |
CO4A_HUMAN |
| Specificity: |
This kit recognizes Human C4a in samples. No significant cross-reactivity or interference between Human C4a and analogues was observed. |
| Sample Type: |
Serum, plasma and other biological fluids |
| Post Translational Modifications | Prior to secretion, the single-chain precursor is enzymatically cleaved to yield non-identical chains alpha, beta and gamma. During activation, the alpha chain is cleaved by C1 into C4a and C4b, and C4b stays linked to the beta and gamma chains. Further degradation of C4b by C1 into the inactive fragments C4c and C4d blocks the generation of C3 convertase. The proteolytic cleavages often are incomplete so that many structural forms can be found in plasma. N- and O-glycosylated. O-glycosylated with a core 1 or possibly core 8 glycan. |
| Function | Non-enzymatic component of C3 and C5 convertases and thus essential for the propagation of the classical complement pathway. Covalently binds to immunoglobulins and immune complexes and enhances the solubilization of immune aggregates and the clearance of IC through CR1 on erythrocytes. C4A isotype is responsible for effective binding to form amide bonds with immune aggregates or protein antigens, while C4B isotype catalyzes the transacylation of the thioester carbonyl group to form ester bonds with carbohydrate antigens. Derived from proteolytic degradation of complement C4, C4a anaphylatoxin is a mediator of local inflammatory process. It induces the contraction of smooth muscle, increases vascular permeability and causes histamine release from mast cells and basophilic leukocytes. |
| Protein Name | Complement C4-AAcidic Complement C4C3 And Pzp-Like Alpha-2-Macroglobulin Domain-Containing Protein 2 Cleaved Into - Complement C4 Beta Chain - Complement C4-A Alpha Chain - C4a Anaphylatoxin - C4b-A - C4d-A - Complement C4 Gamma Chain |
| Database Links | Reactome: R-HSA-166663Reactome: R-HSA-174577Reactome: R-HSA-381426Reactome: R-HSA-8957275Reactome: R-HSA-977606 |
| Cellular Localisation | SecretedSynapseCell ProjectionAxonDendrite |
| Alternative ELISA Names | Complement C4-A ELISA kitAcidic Complement C4 ELISA kitC3 And Pzp-Like Alpha-2-Macroglobulin Domain-Containing Protein 2 Cleaved Into - Complement C4 Beta Chain - Complement C4-A Alpha Chain - C4a Anaphylatoxin - C4b-A - C4d-A - Complement C4 Gamma Chain ELISA kitC4A ELISA kitCO4 ELISA kitCPAMD2 ELISA kit |
| Specificity | This kit recognizes Human C4a in samples. No significant cross-reactivity or interference between Human C4a and analogues was observed. |
| Reproducibility | Both intra-CV and inter-CV are |
Information sourced from Uniprot.org
| Item | Specifications | Storage |
| Micro ELISA Plate (Dismountable) | 96T: 8 wells ×12 strips strips | -20℃, 6 months |
| Reference Standard | 96T: 2 vials 48T: 1 vial | -20℃, 6 months |
| Concentrated Biotinylated Detection Ab (100×) | 96T: 1 vial, 120 μL 60 μL | -20℃, 6 months |
| Concentrated HRP Conjugate (100×) | 96T: 1 vial, 120 μL 60 μL | -20℃ (Protect from light), 6 months |
| Reference Standard & Sample Diluent | 1 vial, 20 mL | 2-8°C, 6 months |
| Biotinylated Detection Ab Diluent | 1 vial, 14 mL | 2-8°C, 6 months |
| HRP Conjugate Diluent | 1 vial, 14 mL | 2-8°C, 6 months |
| Concentrated Wash Buffer (25×) | 1 vial, 30 mL | 2-8°C, 6 months |
| Substrate Reagent | 1 vial, 10 mL | 2-8℃ (Protect from light) |
| Stop Solution | 1 vial, 10 mL | 2-8°C |
| Plate Sealer | 5 pieces | |
| Manual | 1 copy | |
| Certificate of Analysis | 1 copy | |
| Sample Type | Range (%) | Average Recovery (%) |
| Serum(n=8) | 88-100 | 95 |
| EDTA plasma (n=8) | 86-101 | 92 |
| Cell culture media (n=8) | 91-106 | 97 |
| | Intra-assay Precision | Intra-assay Precision | Intra-assay Precision | Inter-assay Precision | Inter-assay Precision | Inter-assay Precision |
| Sample | 1.00 | 2.00 | 3.00 | 1.00 | 2.00 | 3.00 |
| n | 20.00 | 20.00 | 20.00 | 20.00 | 20.00 | 20.00 |
| Mean (ng/mL) | 4.84 | 13.18 | 42.91 | 4.58 | 13.63 | 39.00 |
| Standard deviation | 0.27 | 0.70 | 1.77 | 0.23 | 0.75 | 1.56 |
| CV (%) | 5.58 | 5.31 | 4.12 | 5.02 | 5.50 | 4.00 |
12 months for antibodies. 6 months for ELISA Kits. Please see website T&Cs for further guidance
![Mouse C4b (Complement C4-B [Cleaved into: Complement C4 beta chain; Complement C4 alpha chain; C4a anaphylatoxin; Complement C4 gamma chain]) Sandwich ELISA (STJE0005336)](https://cdn11.bigcommerce.com/s-zso2xnchw9/images/stencil/300x300/products/141127/308645/STJE0005336_1__67197.1648490980.png?c=1 "Mouse C4b (Complement C4-B [Cleaved into: Complement C4 beta chain; Complement C4 alpha chain; C4a anaphylatoxin; Complement C4 gamma chain]) Sandwich ELISA (STJE0005336)")
