Recombinant Human Complement component C1q receptor (CD93), partial (Active)

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Code CSB-MP865099HU
Size $228
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  • (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 Human CD93 at 2 μg/ml can bind Anti-CD93 recombinant antibody (CSB-RA865099MA1HU), the EC50 is 0.6639-1.173 ng/mL. Biological Activity Assay
  • Activity
    Measured by its binding ability in a functional ELISA. Immobilized Human CD93 at 2 μg/ml can bind Human IGFBP7 (CSB-MP620956HUd9), the EC50 is 20.34-26.92 ng/mL. Biological Activity Assay
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Product Details

Greater than 90% as determined by SDS-PAGE.
Less than 1.0 EU/ug as determined by LAL method.
Measured by its binding ability in a functional ELISA. Immobilized Human CD93 at 2 μg/mL can bind Human IGFBP7 (CSB-MP620956HUd9), the EC50 is 20.34-26.92 ng/mL.Measured by its binding ability in a functional ELISA. Immobilized Human CD93 at 2 μg/mL can bind Anti-CD93 recombinant antibody (CSB-RA865099MA1HU), the EC50 is 0.6639-1.173 ng/mL.
Target Names
Uniprot No.
Alternative Names
(C1q/MBL/SPA receptor)(CDw93)(Complement component 1 q subcomponent receptor 1)(Matrix-remodeling-associated protein 4)(CD_antigen: CD93)(C1qR)(C1qR(p))(C1qRp)
Molecular Characterization
Homo sapiens (Human)
Mammalian cell
Expression Region
Target Protein Sequence
Mol. Weight
60.1 kDa
Protein Length
Tag Info
C-terminal 10xHis-tagged
Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
Lyophilized from a 0.2 μm filtered 20 mM Tris-HCl, 0.5 M NaCl, 6% Trehalose, pH 8.0
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.
Troubleshooting and 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 3-7 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.
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.

This Human CD93 recombinant protein was produced in mammalian cell, where the gene sequence encoding Human CD93 (22-580aa) was expressed with the C-terminal 10xHis tag. The purity of this CD93 protein was greater than 90% by SDS-PAGE. The activity was validated.

The function of CD93 is thought to be involved in intercellular adhesion and clearance of apoptotic cells and is associated with various inflammatory and immune-related diseases, including asthma. CD93 is a transmembrane receptor that is upregulated in tumor blood vessels in many cancers. Studies have demonstrated that CD93 regulates β1 integrin signaling activation and fibronectin fibrillation during tumor angiogenesis. A recent study comparing gene expression profiling of tumors under VEGF inhibitor treatment in vivo identified CD93 as a candidate receptor downregulated in VEGF inhibition and a potential target for mediating vascular normalization. This study also confirmed the pro-angiogenic effect of CD93 in endothelial cells. Tumor angiogenesis is an important condition for tumor development, invasion and metastasis, and inhibition of angiogenesis can be used as a therapeutic strategy for tumor therapy. In recent years, targeting pro-angiogenic genes has become a research hotspot for tumor therapy and prevention of tumor expansion. CD93 has a key role in tumor vascular maturation and is a potential therapeutic target.


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Target Background

Receptor (or element of a larger receptor complex) for C1q, mannose-binding lectin (MBL2) and pulmonary surfactant protein A (SPA). May mediate the enhancement of phagocytosis in monocytes and macrophages upon interaction with soluble defense collagens. May play a role in intercellular adhesion.
Gene References into Functions
  1. Report increased CD93 expression in patients with chronic plaque psoriasis and propose the C allele of rs2749817 as a new risk allele for psoriasis. PMID: 28421233
  2. Results show that CD93 and MMRN2 are co-expressed in the blood vessels of various tumors and their interaction modulates the angiogenic process. PMID: 28912033
  3. These findings identify novel protein interactions involving CLEC14A, CD93 and CD248 with MMRN2 as targetable components of vessel formation PMID: 28671670
  4. CD93 and Other Plasma Cell Survival Factor Genes Associated with Measles-Specific Antibody Response after Vaccination PMID: 27529750
  5. Soluble expression of disulfide-bonded C-type lectin like domain of human CD93 in the cytoplasm of Escherichia coli. The recombinant protein could alter LPS pro-inflammatory activity on THP1 cells. PMID: 27742562
  6. Vascular CD93 expression is elevated in nasopharyngeal carcinoma and is correlated with T classification, N classification, distant metastasis, clinical stage and poor prognosis (all P < 0.05). In addition, overexpression of CD93 promoted angiogenesis in vitro. PMID: 27255994
  7. both transmembrane and soluble CD93 are overexpressed in patients with neovascular Age-Related Macular Degeneration. PMID: 27859225
  8. Elevated serum sCD93 levels reflected exacerbated status of allergic diseases, including CSU [chronic spontaneous urticaria ], AR[allergic rhinitis], and asthma. ICS [inhaled corticosteroid] use significantly diminished serum sCD93 levels in steroid-naive patients with BA[Bronchial asthma]. This result may suggest sCD93 in serum as a therapeutic marker for allergic inflammation. PMID: 28332366
  9. Data show that CD93 antigen proved to be phosphorylated on tyrosine 628 and 644 following cell adhesion on laminin through dystroglycan. PMID: 26848865
  10. CD93 expression identifies a predominantly cycling, non-quiescent leukemia-initiating cell population in MLL-rearranged AML, providing opportunities for selective targeting and eradication of LSCs. PMID: 26387756
  11. The T/T genotype of SNP rs2749817 of CD93 is associated with disseminated cancer. PMID: 26008729
  12. CD93 is a key regulator of glioma angiogenesis and vascular function, acting via cytoskeletal rearrangements required for cell-cell and cell-matrix adhesion. PMID: 26363010
  13. These data support a mechanism whereby gC1qR plays an important role in HPV-16 E2-induced human cervical squamous carcinoma cell apoptosis via a mitochondria-dependent pathway. PMID: 25288439
  14. The data indicate that gC1qR inhibits viability, migration and proliferation of cervical squamous cells carcinoma via the p38 MAPK signalling pathway. PMID: 23052251
  15. Antibody-dependent enhancement of parvovirus B19 involves an alternative mechanism mediated by the heat-sensitive complement factor C1q and its receptor, CD93. PMID: 24807719
  16. Expression of CD93 on the lymphocyte population of peripheral blood cells from infants at 1 month after birth was also significantly decreased, compared with that for neonatal umbilical cord blood. PMID: 24033555
  17. HPV 16 E2 induces apoptosis by silencing the gC1qR gene or inhibiting p38 MAPK/JNK signalling in cervical squamous cell carcinoma PMID: 23651874
  18. These data support a mechanism whereby gC1qR induces apoptosis through the mitochondrial and p53-dependent pathways in cervical squamous cell carcinoma. PMID: 23268996
  19. soluble EGF-like domain containing CD93 protein is a novel angiogenic factor acting on the endothelium PMID: 23272129
  20. [review] Following a comprehensive summary of CD93 expression patterns, this review focuses on recent findings that address the putative function of CD93 in inflammation and innate immunity. PMID: 22206251
  21. Data show that Pic, a class 2 SPATE protein produced by Shigella flexneri 2a targets a broad range of human leukocyte glycoproteins including CD43, CD44, CD45, CD93, CD162 and the surface-attached chemokine fractalkine. PMID: 21768350
  22. Results suggest that the plasma concentration of soluble CD93 is a potential novel biomarker for Coronary Artery Disease (CAD), including MI. PMID: 21332844
  23. expression on naive T lymphocytes (CD4(+)CD45RA (+) cells) in human neonatal umbilical cord blood PMID: 20512406
  24. both B1 receptor and gC1q receptor are involved in the vascular leakage induced by hereditary and acquired angioedema plasma. PMID: 19796797
  25. To clarify the cellular and molecular properties of C1qRp it has been demonstrated that C1q does not show enhanced binding to C1qRp-transfected cells, is not a receptor for C1q, and is identical to CD93 with functions relevant to intercellular adhesion. PMID: 11994479
  26. C1qRp defines a new human stem cell population with hematopoietic and hepatic potential PMID: 12140365
  27. O-glycosylation is important in the stable cell surface expression of C1qRP/CD93 PMID: 12891708
  28. Taken together, these findings indicate that the expression of the CD93 molecule identified by CD93 mAb (mNI-11) is dramatically decreased on U937 cells with apoptotic properties PMID: 18094537
  29. RNAi-mediated suppression of gC1qR/p32 markedly reduced HTNV binding and infection in human lung epithelial A549 cells PMID: 18834607

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Subcellular Location
Membrane; Single-pass type I membrane protein.
Tissue Specificity
Highly expressed in endothelial cells, platelets, cells of myeloid origin, such as monocytes and neutrophils. Not expressed in cells of lymphoid origin.
Database Links

HGNC: 15855

OMIM: 120577

KEGG: hsa:22918

STRING: 9606.ENSP00000246006

UniGene: Hs.97199

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