VEGFR2/KDR Active Protein | KDR active protein

VEGFR2/KDR Protein, Human, Recombinant (Domain 1&2&3, hFc Tag)

Cat. Num. AAA8119942

• Gene Names: KDR; FLK1; CD309; VEGFR; VEGFR2
• Purity: >95% as determined by SDS-PAGE
• Synonyms: VEGFR2/KDR; VEGFR2/KDR Protein; Human; Recombinant (Domain 1&2&3; hFc Tag); Human VEGFR2/Flk-1/CD309/KDR Protein (Domain 1&2&3; Fc Tag); CD309 Protein; Flk-1 Protein; FLK1 Protein; VEGFR Protein; VEGFR2 Protein; kinase insert domain receptor; KDR active protein

• Host: HEK293 Cells
• Purity/Purification: >95% as determined by SDS-PAGE
• Form/Format: Lyophilized from sterile PBS, pH7.4. Normally 5%-8% trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hard copy of CoA.
• Sequence: Met1-Lys327

• Species: Human
• Activity: Measured by its ability to inhibit VEGF-dependent proliferation of human umbilical vein endothelial cells (HUVEC) in the presence of 10ng/mL rhVEGF165. The ED50 for this effect is 40-120ng/mL.
• Endotoxin: <1.0EU per ug protein as determined by the LAL method.
• Predicted N Terminal: Ala 20
• Tag: C-human IgG1-Fc
• Protein Construction: A DNA sequence encoding the human KDR (NP_002244.1)(Met1-Lys327) was expressed with the Fc region of human IgG1 at the C-terminus.
• Reconstitution: A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.
• Preparation and Storage: Samples are stable for up to twelve months from date of receipt at -20 degree C to -80 degree C. Store it under sterile conditions at -20 degree C to -80 degree C. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.; In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature. Bulk packages of recombinant proteins are provided as frozen liquid.; They are shipped out with blue ice.

SDS-Page

Testing Data

(Measured by its ability to inhibit VEGF-dependent proliferation of human umbilical vein endothelial cells (HUVEC) in the presence of 10 ng/mL rhVEGF165. The ED50 for this effect is 40-120ng/mL.)

Related Product Information for KDR active protein

Background: VEGFR2 also called KDR or Flk-1, is identified as the receptor for VEGF and VEGFC and an early marker for endothelial cell progenitors, whose expression is restricted to endothelial cells in vivo. VEGFR2 was shown to be the primary signal transducer for angiogenesis and the development of pathological conditions such as cancer and diabetic retinopathy. It has been shown that VEGFR2 is expressed mainly in the endothelial cells, and the expression is upregulated in the tumor vasculature. Thus the inhibition of VEGFR2 activity and its downstream signaling are important targets for the treatment of diseases involving angiogenesis. VEGFR2 transduces the major signals for angiogenesis via its strong tyrosine kinase activity. However, unlike other representative tyrosine kinase receptors, VEGFR2 does not use the Ras pathway as major downstream signaling but rather uses the phospholipase C-protein kinase C pathway to signal mitogen-activated protein (MAP)-kinase activation and DNA synthesis. VEGFR2 is a direct and major signal transducer for pathological angiogenesis, including cancer and diabetic retinopathy, in cooperation with many other signaling partners; thus, VEGFR2 and its downstream signaling appear to be critical targets for the suppression of these diseases. VEGF and VEGFR2-mediated survival signaling are critical to endothelial cell survival, maintenance of the vasculature and alveolar structure, and regeneration of lung tissue. Reduced VEGF and VEGFR2 expression in emphysematous lungs has been linked to increased endothelial cell death and vascular regression.

Product Categories/Family for KDR active protein

Cancer Drug Targets Hemangioblast Markers Receptor Tyrosine Kinases (RTKs)

References

Shibuya M. (2006) Vascular endothelial growth factor (VEGF)-Receptor2: its biological functions, major signaling pathway, and specific ligand VEGF-E. Endothelium. 13(2): 63-9.
Marwick JA, et al. (2010) Cigarette smoke regulates VEGFR2-mediated survival signaling in rat lungs. J Inflamm (Lond). 7(1): 11.
Bruns AF, et al. (2010) Ligand-stimulated VEGFR2 signaling is regulated by co-ordinated trafficking and proteolysis. Traffic. 11(1): 161-74.

NCBI and Uniprot Product Information

• NCBI GI #: 11321597
• NCBI GeneID: 3791
• NCBI Accession #: NP_002244.1
• NCBI GenBank Nucleotide #: NM_002253.2
• UniProt Accession #: P35968; O60723; Q14178; A2RRS0; B5A925; C5IFA0
• Molecular Weight: 151,527 Da
• NCBI Official Full Name: vascular endothelial growth factor receptor 2
• NCBI Official Synonym Full Names: kinase insert domain receptor (a type III receptor tyrosine kinase)
• NCBI Official Symbol: KDR
• NCBI Official Synonym Symbols: FLK1; CD309; VEGFR; VEGFR2
• NCBI Protein Information: vascular endothelial growth factor receptor 2; soluble VEGFR2; fetal liver kinase 1; fetal liver kinase-1; protein-tyrosine kinase receptor Flk-1; tyrosine kinase growth factor receptor
• UniProt Protein Name: Vascular endothelial growth factor receptor 2
• Protein Family: Vascular endothelial growth factor receptor
• UniProt Gene Name: KDR
• UniProt Synonym Gene Names: FLK1; VEGFR2; VEGFR-2; FLK-1; KDR
• UniProt Entry Name: VGFR2_HUMAN

NCBI Description

Vascular endothelial growth factor (VEGF) is a major growth factor for endothelial cells. This gene encodes one of the two receptors of the VEGF. This receptor, known as kinase insert domain receptor, is a type III receptor tyrosine kinase. It functions as the main mediator of VEGF-induced endothelial proliferation, survival, migration, tubular morphogenesis and sprouting. The signalling and trafficking of this receptor are regulated by multiple factors, including Rab GTPase, P2Y purine nucleotide receptor, integrin alphaVbeta3, T-cell protein tyrosine phosphatase, etc.. Mutations of this gene are implicated in infantile capillary hemangiomas. [provided by RefSeq, May 2009]

Uniprot Description

VEGFR2: a receptor tyrosine kinase of the VEGFR family. High affinity receptor for VEGF and VEGF-C. Ligand binding induces autophosphorylation and activation. Activated receptor recruits proteins including Shc, GRB2, PI3K, Nck, SHP-1 and SHP-2. Plays a key role in vascular development and regulation of vascular permeability.

Protein type: Membrane protein, integral; Kinase, protein; Protein kinase, tyrosine (receptor); Protein kinase, TK; EC 2.7.10.1; TK group; VEGFR family

Chromosomal Location of Human Ortholog: 4q11-q12

Cellular Component: Golgi apparatus; integral to plasma membrane; endoplasmic reticulum; early endosome; cytoplasmic membrane-bound vesicle; extracellular region; plasma membrane; cell junction; nucleus; endosome; external side of plasma membrane; lipid raft

Molecular Function: integrin binding; vascular endothelial growth factor receptor activity; protein binding; growth factor binding; protein-tyrosine kinase activity; receptor signaling protein tyrosine kinase activity; transmembrane receptor protein tyrosine kinase activity; Hsp90 protein binding; ATP binding

Biological Process: extracellular matrix organization and biogenesis; positive regulation of positive chemotaxis; peptidyl-tyrosine phosphorylation; viral reproduction; protein amino acid autophosphorylation; cell maturation; calcium ion homeostasis; regulation of cell shape; positive regulation of focal adhesion formation; ovarian follicle development; positive regulation of MAPKKK cascade; positive regulation of cell proliferation; positive regulation of mesenchymal cell proliferation; angiogenesis; vasculogenesis; endothelial cell differentiation; cell fate commitment; embryonic hemopoiesis; positive regulation of phosphoinositide 3-kinase cascade; positive regulation of angiogenesis; cell migration during sprouting angiogenesis; branching morphogenesis of a tube; positive regulation of endothelial cell proliferation; positive regulation of protein amino acid phosphorylation; vascular endothelial growth factor receptor signaling pathway; lymph vessel development; alveolus development; surfactant homeostasis; transmembrane receptor protein tyrosine kinase signaling pathway; negative regulation of apoptosis; positive regulation of nitric-oxide synthase biosynthetic process; positive regulation of cell migration

Disease: Hemangioma, Capillary Infantile