Endoglin (CD105) is a 90 kDa type I transmembrane glycoprotein of the zona pellucida (ZP) family of proteins (1‑3). Endoglin and betaglycan/T beta RIII are type III receptors for TGF beta superfamily ligands, sharing 71% aa identity in the transmembrane (TM) and cytoplasmic domains. Endoglin is highly expressed on proliferating vascular endothelial cells, chondrocytes, and syncytiotrophoblasts of term placenta, with lower amounts on hematopoietic, mesenchymal and neural crest stem cells, activated monocytes, and lymphoid and myeloid leukemic cells (2‑5). Human Endoglin cDNA encodes 658 amino acids (aa) including a 25 aa signal sequence, a 561 aa extracellular domain (ECD) with an orphan domain and a two-part ZP domain, a TM domain and a 47 aa cytoplasmic domain (1‑3). An isoform with a 14 aa cytoplasmic domain (S-endoglin) can oppose effects of long (L) Endoglin (6, 7). The human Endoglin ECD shares 65-72% aa identity with mouse, rat, bovine, porcine and canine Endoglin. Endoglin homodimers interact with TGF-beta 1 and TGF-beta 3 (but not TGF-beta 2), but only after binding T beta RII (8). Similarly, they interact with activin-A and BMP-7 via activin type IIA or B receptors, and with BMP-2 via BMPR-1A/ALK-3 or BMPR-1B/ALK-6 (9). BMP-9, however, is reported to bind Endoglin directly (10). Endoglin modifies ligand-induced signaling in multiple ways. For example, expression of Endoglin can inhibit TGF-beta 1 signals but enhance BMP7 signals in the same myoblast cell line (11). In endothelial cells, Endoglin inhibits T beta RI/ALK5, but enhances ALK1-mediated activation (12). Deletion of mouse Endoglin causes lethal vascular and cardiovascular defects, and human Endoglin haploinsufficiency can a cause the vascular disorder, hereditary hemorrhagic telangiectasia type I (13, 14). These abnormalities confirm the essential function of Endoglin in differentiation of smooth muscle, angiogenesis, and neovascularization (2‑4, 12‑14). In preeclampsia of pregnancy, high levels of proteolytically generated soluble Endoglin and VEGF R1 (sFLT1), along with low placental growth factor (PlGF), are pathogenic due to antiangiogenic activity (15).
Key Product Details
Species Reactivity
Validated:
Human
Cited:
Human, Mouse, Rat
Applications
Validated:
Flow Cytometry, CyTOF-ready
Cited:
Immunohistochemistry, Flow Cytometry, Immunocytochemistry, CyTof
Label
Unconjugated
Antibody Source
Monoclonal Mouse IgG1 Clone # 166707
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Product Specifications
Immunogen
Mouse myeloma cell line NS0-derived recombinant human Endoglin/CD105
Glu26-Gly586
Accession # Q5T9B9
Glu26-Gly586
Accession # Q5T9B9
Specificity
Detects human Endoglin/CD105.
Clonality
Monoclonal
Host
Mouse
Isotype
IgG1
Scientific Data Images for Human Endoglin/CD105 Antibody
Detection of Endoglin/CD105 in U937 Human Cell Line by Flow Cytometry.
U937 human histiocytic lymphoma cell line was stained with Mouse Anti-Human Endoglin/CD105 Monoclonal Antibody (Catalog # MAB10971, filled histogram) or isotype control antibody (Catalog # MAB002, open histogram), followed by Phycoerythrin-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # F0102B). View our protocol for Staining Membrane-associated Proteins.Applications for Human Endoglin/CD105 Antibody
Application
Recommended Usage
CyTOF-ready
Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.
Flow Cytometry
0.25 µg/106 cells
Sample: U937 human histiocytic lymphoma cell line
Sample: U937 human histiocytic lymphoma cell line
Reviewed Applications
Read 3 reviews rated 4 using MAB10971 in the following applications:
Flow Cytometry Panel Builder
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Advanced Features
- Spectra Viewer - Custom analysis of spectra from multiple fluorochromes
- Spillover Popups - Visualize the spectra of individual fluorochromes
- Antigen Density Selector - Match fluorochrome brightness with antigen density
Formulation, Preparation, and Storage
Purification
Protein A or G purified from hybridoma culture supernatant
Reconstitution
Reconstitute at 0.5 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.
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Formulation
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.
Shipping
Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
- 12 months from date of receipt, -20 to -70 °C as supplied.
- 1 month, 2 to 8 °C under sterile conditions after reconstitution.
- 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Calculators
Background: Endoglin/CD105
References
- Gougos, A. and Letarte, M. (1990) J. Biol. Chem. 265:8361.
- ten Dijke, P. et al. (2008) Angiogenesis 11:79.
- Bernabeu, C. et al. (2007) J. Cell. Biochem. 102:1375.
- Mancini, M.L. et al. (2007) Dev. Biol. 308:520.
- Moody, J.L. et al. (2007) Stem Cells 25:2809.
- Velasco, S. et al. (2008) J. Cell Sci. 121:913.
- Perez-Gomez, E. et al. (2005) Oncogene 24:4450.
- Cheifetz, S, et al. (1992) J. Biol. Chem. 267:19027.
- Barbara, N.P. et al. (1999) J. Biol. Chem. 274:584.
- Scharpfenecker, M. et al. (2007) J. Cell Sci. 120:964.
- Scherner, O. et al. (2007) J. Biol. Chem. 282:13934.
- Pece-Barbara, N. et al. (2005) J. Biol. Chem. 280:27800.
- Arthur, H.M. et al. (2000) Dev. Biol. 217:42.
- Lebrin, F. and C.L. Mummery (2008) Trends Cardiovasc. Med. 18:25.
- Venkatesha, S. et al. (2006) Nat. Med. 12:642.
Alternate Names
CD105, ENG
Gene Symbol
ENG
UniProt
Additional Endoglin/CD105 Products
Product Documents for Human Endoglin/CD105 Antibody
Certificate of Analysis
To download a Certificate of Analysis, please enter a lot or batch number in the search box below.
Note: Certificate of Analysis not available for kit components.
Product Specific Notices for Human Endoglin/CD105 Antibody
For research use only
Citations for Human Endoglin/CD105 Antibody
Customer Reviews for Human Endoglin/CD105 Antibody (3)
4 out of 5
3 Customer Ratings
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Application: Flow CytometrySample Tested: Bone ExtractsSpecies: HumanVerified Customer | Posted 02/14/2020
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