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Product Info

ELISA 1:10000, WB 1:500-1:2000, IHC 1:200-1:1000, IF/ICC 1:200-1:1000, FCM 1:200-1:400
*The optimal dilutions should be determined by the end user.

WB: For western blot detection of denatured protein samples. IHC: For immunohistochemical detection of paraffin sections (IHC-p) or frozen sections (IHC-f) of tissue samples. IF/ICC: For immunofluorescence detection of cell samples. ELISA(peptide): For ELISA detection of antigenic peptide.

Monoclonal [AFB1896]
CD105 antibody detects endogenous levels of total CD105.
Cite Format: Affinity Biosciences Cat# BF0246, RRID:AB_2833920.
Mouse IgG1 in phosphate buffered saline (without Mg2+ and Ca2+), pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol. Store at -20 °C. Stable for 12 months from date of receipt.


AI528660; AI662476; CD 105; CD105; CD105 antigen; EGLN_HUMAN; END; Endoglin; Eng; FLJ41744; HHT1; ORW; ORW1; Osler Rendu Weber syndrome 1; RP11 228B15.2; S-endoglin; SN6;



Purified recombinant fragment of human CD105 expressed in E. Coli.


Detected on umbilical veil endothelial cells (PubMed:10625079). Detected in placenta (at protein level) (PubMed:1692830). Detected on endothelial cells (PubMed:1692830).

This gene encodes a homodimeric transmembrane protein which is a major glycoprotein of the vascular endothelium. This protein is a component of the transforming growth factor beta receptor complex and it binds TGFB1 and TGFB3 with high affinity. Mutations in this gene cause hereditary hemorrhagic telangiectasia, also known as Osler-Rendu-Weber syndrome 1, an autosomal dominant multisystemic vascular dysplasia.

PTMs - P17813 As Substrate

Site PTM Type Enzyme
N134 N-Glycosylation
Y612 Phosphorylation
Y614 Phosphorylation
S634 Phosphorylation P37173 (TGFBR2)
S635 Phosphorylation P37173 (TGFBR2)
T640 Phosphorylation P37023 (ACVRL1)
S646 Phosphorylation P37023 (ACVRL1) , P36897 (TGFBR1)
S649 Phosphorylation P36897 (TGFBR1) , P37023 (ACVRL1)
T650 Phosphorylation
T654 Phosphorylation P37023 (ACVRL1)

Research Backgrounds


Vascular endothelium glycoprotein that plays an important role in the regulation of angiogenesis. Required for normal structure and integrity of adult vasculature. Regulates the migration of vascular endothelial cells. Required for normal extraembryonic angiogenesis and for embryonic heart development (By similarity). May regulate endothelial cell shape changes in response to blood flow, which drive vascular remodeling and establishment of normal vascular morphology during angiogenesis (By similarity). May play a critical role in the binding of endothelial cells to integrins and/or other RGD receptors. Acts as TGF-beta coreceptor and is involved in the TGF-beta/BMP signaling cascade that ultimately leads to the activation of SMAD transcription factors. Required for GDF2/BMP9 signaling through SMAD1 in endothelial cells and modulates TGFB1 signaling through SMAD3.

Subcellular Location:

Cell membrane>Single-pass type I membrane protein.

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionSubcellular location
Tissue Specificity:

Detected on umbilical veil endothelial cells. Detected in placenta (at protein level). Detected on endothelial cells.

Subunit Structure:

Homodimer; disulfide-linked. Forms a heteromeric complex with the signaling receptors for transforming growth factor-beta: TGFBR1 and/or TGFBR2. It is able to bind TGFB1 and TGFB2 with high affinity, but not TGFB3. Interacts with GDF2, forming a heterotetramer with a 2:2 stoichiometry. Interacts with ACVRL1. Can form a heteromeric complex with GDF2 and ACVRL1. Interacts with BMP10. Interacts with TCTEX1D4. Interacts with ARRB2.


The ZP domain mediates dimerization.

The N-terminal OR region is composed of two intertwined domains (OR1 and OR2) with a common, novel fold. Each contains 12 beta-strands that form a parallel beta-helix-like structure, plus a single alpha-helix. The OR1 region mediates interaction with GDF2.

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