Name: Recombinant Human Membrane cofactor protein (CD46), partial (Active)
Brand: CUSABIO
SKU: CSB-MP004939HU
Price: $148 USD
Availability: InStock
Rating: 5.0 (1 reviews)

Product Details

Purity

Greater than 90% as determined by SDS-PAGE.
Greater than 95% as determined by SEC-HPLC.

Endotoxin

Less than 1.0 EU/ug as determined by LAL method.

Activity

Measured by its binding ability in a functional ELISA. Immobilized CD46 at 2 μg/ml can bind Anti-CD46 rabbit monoclonal antibody, the EC50 of human CD46 protein is 0.8333-1.054 ng/ml.

Target Names

CD46

Uniprot No.

P15529

Research Area

Cancer

Alternative Names

CD46; MCP; MIC10; Membrane cofactor protein; TLX; Trophoblast leukocyte common antigen; CD antigen CD46

Molecular Characterization

Species

Homo sapiens (Human)

Source

Mammalian cell

Expression Region

35-328aa

Target Protein Sequence

CEEPPTFEAMELIGKPKPYYEIGERVDYKCKKGYFYIPPLATHTICDRNHTWLPVSDDACYRETCPYIRDPLNGQAVPANGTYEFGYQMHFICNEGYYLIGEEILYCELKGSVAIWSGKPPICEKVLCTPPPKIKNGKHTFSEVEVFEYLDAVTYSCDPAPGPDPFSLIGESTIYCGDNSVWSRAAPECKVVKCRFPVVENGKQISGFGKKFYYKATVMFECDKGFYLDGSDTIVCDSNSTWDPPVPKCLKVLPPSSTKPPALSHSVSTSSTTKSPASSASGPRPTYKPPVSNY

Mol. Weight

61.6 kDa

Protein Length

Partial

Tag Info

C-terminal hFc1-tagged

Form

Liquid or Lyophilized powder

Buffer

Lyophilized from a 0.2 μm filtered PBS, 6% Trehalose, pH 7.4

Troubleshooting and FAQs

Protein FAQs

Storage Condition

Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.

Shelf Life

The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.

Lead Time

Basically, we can dispatch the products out in 1-3 working days after receiving your orders. Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.

Notes

Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.

Datasheet & COA

Please contact us to get it.

Description

CD46 functions as a critical complement regulatory protein that protects host cells from autologous complement attack, making it a key target in cancer immune evasion research. This recombinant human CD46 construct (residues 35–328) carries a C-terminal hFc1 tag and demonstrates robust functional activity, with an EC50 of 0.83–1.05 ng/ml in binding ELISA against anti-CD46 monoclonal antibody, supporting its use as a positive control in complement ELISA and as a reliable reagent for inhibitor screening targeting complement pathways. The protein's mammalian expression ensures native-like glycosylation critical for complement regulatory function, while endotoxin levels below 1.0 EU/μg and purity exceeding 90% by SDS-PAGE satisfy the stringent criteria required for hemolytic assays, opsonization studies, and mechanistic investigations of tumor immune evasion where background inflammatory signals would confound results.

Customer Reviews and Q&A

■ Customer Reviews

Average Rating:

5.0 - 1 reviews

Submit a Review here

Applications : Enzymatic activity in vitro

Review: I used the CSB-MP004939HU protein with the antibody (CSB-RA908548A0HU) for an ELISA experiment, and the EC50 was measured to be 0.8000-1.380 ng/ml. The results showed that the protein has good binding activity, which met my expectations and could be used for subsequent experiments.

By Anonymous

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Target Background

Function

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.; (Microbial infection) Acts as a receptor for Adenovirus subgroup B2 and Ad3.; (Microbial infection) Acts as a receptor for cultured Measles virus.; (Microbial infection) Acts as a receptor for Herpesvirus 6/HHV-6.; (Microbial infection) May act as a receptor for pathogenic bacteria Neisseria and Streptococcus pyogenes.

Gene References into Functions

Only type-I interferon restricts viral replication of attenuated Measles virus (MV) Schwarz strain in mice, independently of the presence of hCD46 receptor. PMID: 30199752
CD46 levels were positive in 3.3% (n = 3) and negative in 96.7% (n = 90). Conclusion This study does not support the theory of measles virus as the cause of otosclerosis. PMID: 28971731
Findings demonstrate that CD46 is a key inhibitor of complement activation whose downregulation may be involved in the pathogenesis of bullous pemphigoid. PMID: 28273946
these data suggest a possible mechanism underlying the regulatory function of CD46 on T cells. PMID: 29066539
study demonstratede that MMP-9-mediated shedding of CD46 is an integral part of autocrine Th1 regulation and that this pathway is dysregulated in T cells from patients with systemic lupus erythematosus PMID: 28444759
the cell surface expression level of CD46 was markedly higher in patient myeloma cells with 1q gain than in those with normal 1q copy number. PMID: 27841764
Our findings reveal a novel role of CD46 in accelerating inflammatory responses upon meningococcal infection or LPS stimulation by regulating the functional polarization and survival of macrophages. PMID: 27794168
study reveals common CD46 and IFI44L SNPs associated with measles-specific humoral immunity, and highlights the importance of alternative splicing/virus cellular receptor isoform usage as a mechanism explaining inter-individual variation in immune response after live measles vaccine PMID: 28289848
study showed no genotype differences in CD46 IVS1-1724 C>G Single nucleotide polymorphis (SNP) between Recurrent Spontaneous Abortion and fertile women PMID: 27921411
Isoforms of CD46 impact on HHV-6B infection and thereby in part explain the distinct tropism of HHV-6AGS and HHV-6BPL1. PMID: 28056415
This study suggests that the promoter polymorphism (rs2796267, -496 A/G) CD46 gene may be related to susceptibility of acute renal allograft rejection in Korean kidney transplantation recipients. PMID: 27234742
provides insight into CD46 alternative splicing regulation with implications for its function in the immune system and for genetic disease PMID: 27226545
CD46 controls both Th1 activation and regulation via a miR-150-dependent mechanism. PMID: 26746193
Data show that CD28 antigen costimulation modulates CD46 antigen surface expression on activated T cells. PMID: 25787182
This review summarizes our current knowledge of disease-associated mutations in this complement inhibitor(CD46). PMID: 26054645
It was not discover any association between A304V or other CD46 SNPs and preeclampsia. PMID: 25710174
gene deficiency results in defective Th1 cell induction due to failure in metabolic reprogramming PMID: 26084023
Each mutant C3b bound MCP at reduced affinity, providing a molecular basis for its reduced cofactor activity in atypical hemolytic uremic syndrome. PMID: 25879158
The mutations in the regulators CFH, CFI and MCP involve loss-of-function, whereas those for C3 involve gain-of-function. PMID: 25188723
Results suggest a possible role for multidrug resistance genes ABCA10 and ABCA6 in follicular lymphoma survival and add to the evidence that genetic variation in CD46 and IL8 may have prognostic implications follicular lymphoma. PMID: 25294155
Expression of membrane complement regulators, CD46, CD55 and CD59, in mesothelial cells of patients on peritoneal dialysis therapy. PMID: 25725314
Functional characterization of two novel non-synonymous alterations in CD46 and a Q950H change in factor H found in atypical hemolytic uremic syndrome patients. PMID: 25733390
Transgenic hCD46/HLA-E expression reduced humoral xenoresponses since all were downregulated during ex vivo xenoperfusion of hCD46/HLA-E double transgenic pig forelimbs with human blood. PMID: 24635052
The expression levels of CD46, CD55, and CD59 were significantly higher in colon cancer tissues compared with the normal adjacent colon tissues. PMID: 24978917
The present study suggests that CD46 plays an important role in hepatocellular carcinoma carcinogenesis by regulating let-7b and miR-17. PMID: 24297460
Data show that calcitriol affects the CD46 pathway, and that it promotes anti-inflammatory responses mediated by CD46. PMID: 23144765
We found that CD46 and CD59 were decreased in retinal pigment epithelium cells in part, by their release in exosomes and apoptotic particles. PMID: 24664706
C3aR and CD46 activation via intrinsic generation of their respective ligands is an integral part of human Th1 (but not Th2) immunity. PMID: 24321396
patients with MCP mutations only have a good long-term prognosis with 15% to 20% disease recurrence after KTx PMID: 24247905
Case Report: patient with atypical haemolytic uremic syndrome with combined membrane cofactor protein CD46 and complement factor I mutations undergoing successful kidney transplantation. PMID: 23519521
Mutations in membrane cofactor protein is associated with end-stage renal disease in a patient with hemolytic uremic syndrome caused by infections by Escherichia coli strains producing Shiga-like toxins. PMID: 23731345
Data show that increased CD35, CD46, CD55 and CD59 on neutrophils and monocytes present potent markers of bacterial infection and viral infection. PMID: 23376460
Thus, while nectin-4 and CD46 interact functionally with the measles virus H protein beta4-beta5 hydrophobic groove, SLAM merely covers it. PMID: 23760251
HCV incorporates selectively CD59, but not CD46 or CD55, in its envelope to gain resistance to CML in serum of infected individuals PMID: 23049856
Hepatitis B virus X protein protects hepatoma and hepatic cells from complement-dependent cytotoxicity by up-regulation of CD46. PMID: 23391762
The alternative pathway of complement may play a role in the pathogenesis of HELLP syndrome. PMID: 22594569
The aim of this study was to determine the transcript and protein levels of complement decay-accelerating factor (DAF) and membrane cofactor protein (MCP) in the placentas of women with acquired and inherited thrombophilia. PMID: 23042280
we found that CD46 regulated the expression of Notch receptors and ligands during T cell activation and that disturbance of the CD46-Notch crosstalk impeded induction of IFN-alpha and switching to IL-10. PMID: 23086448
Data show that mutations in CD46 and CFH did not predispose to systemic lupus erythematosus (SLE) or nephritis but was associated with earlier onset of nephritis. PMID: 22171659
mumps virus (MuV) and vesicular stomatitis virus (VSV) assemble to include CD46 and CD55, two host cell regulators which inhibit propagation of complement pathways through distinct mechanisms. PMID: 22761385
Prostaglandin (PG)E2 has a novel role in CD46 functions, which might at least partly explain the diverse roles of PGE2 in T cell functions. PMID: 22544928
Three CD46 variants (rs7144, rs11118580, and rs2724384) were significantly associated with measles virus-specific IgG levels (P = 0.008, P = 0.026, and P = 0.018, respectively). PMID: 22357652
in systemic lupus erythematosus, the expression of leukocyte MCP at the mRNA level is closely related to disease activity PMID: 22247341
Data suggest that HBXIP upregulates CD46, CD55 and CD59 through p-ERK1/2/NF-kappaB signaling to protect breast cancer from complement-dependent cytotoxicity. PMID: 22293503
The strongest associations replicated in both cohorts were found for four SNPs within CD46 (p-value<10(-3)) and five SNPs within CFH (p-value<5x10(-3)). PMID: 22153652
Subjects previously immunized with measles-mumps-rubella vaccine were genotyped for 66 candidate single nucleotide polymorphisms in the CD46, SLAM and CD209 genes. PMID: 22086389
Mutations in the MCP gene seems to be a common etiology of atypical hemolytic uremic syndrome in Czech patients PMID: 21706448
protein expression is an unfavorable prognostic factor in breast cancer cases PMID: 21617523
Data sshow that variants in SFTPD, CD46 and IL1R1 are associated with IPD in both EA and AA. PMID: 21858107
the A304V mutation in the MCP gene is not strongly associated with RM or FL. PMID: 21840606

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Involvement in disease

Hemolytic uremic syndrome atypical 2 (AHUS2)

Subcellular Location

Cytoplasmic vesicle, secretory vesicle, acrosome inner membrane; Single-pass type I membrane protein. Note=Inner acrosomal membrane of spermatozoa. Internalized upon binding of Measles virus, Herpesvirus 6 or Neisseria gonorrhoeae, which results in an increased susceptibility of infected cells to complement-mediated injury. In cancer cells or cells infected by Neisseria, shedding leads to a soluble peptide.

Tissue Specificity

Expressed by all cells except erythrocytes.

Database Links

HGNC: 6953

OMIM: 120920

KEGG: hsa:4179

STRING: 9606.ENSP00000313875

UniGene: Hs.510402

Code	CSB-MP004939HU
Abbreviation	Recombinant Human CD46 protein, partial (Active)
MSDS	MSDS Datasheet
Size	$9.9
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Image	(Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel. Activity Measured by its binding ability in a functional ELISA. Immobilized CD46 at 2 μg/ml can bind Anti-CD46 rabbit monoclonal antibody, the EC₅₀ of human CD46 protein is 0.8333-1.054 ng/ml. Biological Activity Assay The purity of Human CD46 was greater than 95% as determined by SEC-HPLC
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Recombinant Human Membrane cofactor protein (CD46), partial (Active)

Product Details

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Target Background

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