Active Complement Component 8b (C8b)
Complement component 8 subunit beta
- UOM
- FOB US$ 280.00 US$ 700.00 US$ 1,400.00 US$ 4,200.00 US$ 10,500.00
- Quantity
Overview
Properties
- Product No.APB306Hu01
- Organism SpeciesHomo sapiens (Human) Same name, Different species.
- ApplicationsCell culture; Activity Assays.
Research use only - DownloadInstruction Manual
- CategorySignal transductionImmune moleculeRheumatology
- Buffer FormulationPBS, pH7.4, containing 0.01% SKL, 5% Trehalose.
- Traits Freeze-dried powder, Purity > 90%
- Isoelectric Point7.3
Sign into your account
Share a new citation as an author
Upload your experimental result
Review

Contact us
Please fill in the blank.
Activity test

Complement Component 8b (C8b), one of the three subunits of the complement component 8 (C8) protein, has only been identified in vertebrates. C8 is one of the five components (C5b, C6, C7, C8 and C9) that interact to form the MAC that plays a key role in the innate and adaptive immune response by forming pores in the plasma membrane of target cells. Besides, C9 can interact with C8b, thus a functional binding ELISA assay was conducted to detect the interaction of recombinant human C8b and recombinant human C9. Briefly, C8b was diluted serially in PBS with 0.01% BSA (pH 7.4). Duplicate samples of 100 μl were then transferred to C9-coated microtiter wells and incubated for 1h at 37℃. Wells were washed with PBST and incubated for 1h with anti-C8b pAb, then aspirated and washed 3 times. After incubation with HRP labelled secondary antibody for 1h at 37℃, wells were aspirated and washed 5 times. With the addition of substrate solution, wells were incubated 15-25 minutes at 37℃. Finally, add 50 µL stop solution to the wells and read at 450/630 nm immediately. The binding activity of recombinant human C8b and recombinant human C9 was shown in Figure 1, the EC50 for this effect is 0.59 ug/mL.
Usage
Reconstitute in 10mM PBS (pH7.4) to a concentration of 0.1-1.0 mg/mL. Do not vortex.
Storage
Avoid repeated freeze/thaw cycles. Store at 2-8°C for one month. Aliquot and store at -80°C for 12 months.
Stability
The thermal stability is described by the loss rate. The loss rate was determined by accelerated thermal degradation test, that is, incubate the protein at 37°C for 48h, and no obvious degradation and precipitation were observed. The loss rate is less than 5% within the expiration date under appropriate storage condition.
Increment services
-
BCA Protein Quantification Kit
-
Molecular Mass Marker for Protein
-
Monoclonal Antibody Customized Service
-
Polyclonal Antibody Customized Service
-
Protein Activity Test Experiment Service
-
Electrophoretic Mobility Shift Assay (EMSA) Experiment Service
-
Buffer
-
Lentivirus Packaging Experiment Service
-
Adenovirus Packaging Experiment Service
-
Real Time PCR Experimental Service
-
Spike RBD Protein (S-RBD)
-
Protein G
-
Protein A
Citations
- Quantitative proteomics reveal three potential biomarkers for risk assessment of acute myocardial infarctionPubmed:35156527