Membrane cofactor protein (CD46)

Links to databases

Acts as a cofactor for complement factor I, a serine protease which protects autologous cells against complement-mediated injury by cleaving C3b and C4b deposited on host tissue. May be involved in the fusion of the spermatozoa with the oocyte during fertilization. Also acts as a costimulatory factor for T-cells which induces the differentiation of CD4+ into T-regulatory 1 cells. T-regulatory 1 cells suppress immune responses by secreting interleukin-10, and therefore are thought to prevent autoimmunity. (Microbial infection) A number of viral and bacterial pathogens seem to bind MCP in order to exploit its immune regulation property and directly induce an immunosuppressive phenotype in T-cells. Acts as a receptor for adenovirus subgroup B2 and Ad3, cultured measles virus and herpesvirus 6 (PubMed:10972291, PubMed:12663806, PubMed:12724329, PubMed:12915534, PubMed:14566335, PubMed:15047806, PubMed:15078926, PubMed:15919905, PubMed:16254377). May act as a receptor for pathogenic bacteria Neisseria and Streptococcus pyogenes (PubMed:7708671, PubMed:9379894, PubMed:11260136, PubMed:11971006).

Sample type

Recommended sample types are human EDTA plasma and serum. A range of additional sample types are compatible with the technology (PEA), including citrate plasma, heparin plasma, cerebrospinal fluid, (CSF), tissue and cell lysates, fine needle biopsis, microdialysis fluid, cell culture media, dried blood spots, synovial fluid, saliva, plaque extract and microvesicles. Please note that protein expression levels are expected to vary in different sample types. Certain assays are differentially affected by interfering substances such as hemolysate. Download any of our Data Validation documents or contact support@olink.com for more information.

NOTE: The calibrator curve below shows the performance of the assay with the estimated sensitivity and dynamic range parameters indicated. These curves are generated during the assay validation process using recombinant antigens. Please note that when analyzing biological samples the data generated will be given in the form of relative quantification (NPX values) and cannot be converted to absolute protein concentrations. For more info about NPX measurements, please visit our FAQ page.

Analytical Measuring Range

Please note: the technical data reported below refers to the measured value in the in vitro validation assays. Since the Cardiometabolic panel uses human samples diluted 2025-fold, a multiplication factor of 2025 should be applied when comparing the addressable biological concentration to this validation data.

    • LOD (pg/mL)
    • NA
    • LLOQ (pg/mL)
    • NA
    • ULOQ (pg/mL)
    • NA
    • Hook (pg/mL)
    • NA
    • Range (logs)
    • NA

Calibrator curve for validation data (generated in multiplex)

Membrane cofactor protein (CD46)

Precision

    • Within run precision Coefficient of Variation (CV)
    • 16%
    • Between run precision Coefficient of Variation (CV)
    • 11%

Precision (repeatability) is calculated from linearized NPX values over LOD.

Biomarker Validation Data

Additional validation data, as well as a more detailed description of how the Olink panels are quality controlled can be found in our Data Validation documents. To download or to learn more go to the Data Validation page.

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