Human FLT1 protein (extracellular domain), Fc-fusion, biotinylated, recombinant

Product ID: FLT1-Fc-Biot (SKU#: FCL1058B)

Price:

$678.00

Description

Vascular endothelial cell growth factors (VEGFs) are secreted polypeptides with a highly conserved cystine-knot structure similar to that of the platelet-derived growth factors (PDGFs). VEGFs play important roles in vascular development and in diseases involving abnormal growth of blood vessels such as tumor-related angiogenesis. VEGFs stimulate angiogenesis by binding to the specific receptors (VEGFRs) on the surface of vascular endothelial cells. All the three VEGFRs, VEGFR1 (Flt-1), VEGFR2 (KDR/Flk-1/CD309), and VEGFR3 (Flt-4), belong to the CSF-1/PDGF receptor subfamily of receptor tyrosine kinase superfamily (RTKs). Each VEGFR contains 7 immunoglobulin (Ig)-like C2-type domains in the extracellular region and an intracellular kinase domain. VEGFR1 is a receptor for VEGF, VEGFB and PDGF. VEGFR1 is expressed predominantly in normal lung and specifically expressed in most of the vascular endothelial cells and peripheral blood monocytes. VEGFR1 plays an essential role in the development of embryonic vasculature, the regulation of angiogenesis, cell survival, cell migration, macrophage function, chemotaxis, and cancer cell invasion. It may act as a negative regulator of embryonic angiogenesis by inhibiting excessive proliferation of endothelial cells. VEGFR1 can promote endothelial cell proliferation, survival and angiogenesis in adulthood. VEGFR1 shows very high affinity for VEGF and relatively weak protein kinase activity. VEGFR1 may function as a negative regulator of VEGF signaling by limiting the amount of free VEGF and preventing the binding to VEGFR2/KDR.

Product Details

Gene Symbol: FLT1; VEGFR1; FLT; FLT-1; VEGFR-1; FRT

NCBI Gene ID: 2321

Uniprot Entry: P17948

Construct Details: The recombinant human FLT1-Fc fusion is expressed as a 859 amino acid protein consisting of Ser27 - Arg656 region of FLT1 (Uniprot accession # P17948 - isoform 2 or soluble FLT1) and a C-terminal Fc from human IgG1, which exists as a dimer under non-reducing conditions.

Source: Human cells stably expressing FLT1-Fc and growing in chemical-defined media with no animal components or antibiotics.

Deduced Amino Acid Sequence:

SKLKDPELSLKGTQHIMQAGQTLHLQCRGEAAHKWSLPEMVSKESERLSITKSACGRNGKQF

CSTLTLNTAQANHTGFYSCKYLAVPTSKKKETESAIYIFISDTGRPFVEMYSEIPEIIHMTE

GRELVIPCRVTSPNITVTLKKFPLDTLIPDGKRIIWDSRKGFIISNATYKEIGLLTCEATVN

GHLYKTNYLTHRQTNTIIDVQISTPRPVKLLRGHTLVLNCTATTPLNTRVQMTWSYPDEKNK

RASVRRRIDQSNSHANIFYSVLTIDKMQNKDKGLYTCRVRSGPSFKSVNTSVHIYDKAFITV

KHRKQQVLETVAGKRSYRLSMKVKAFPSPEVVWLKDGLPATEKSARYLTRGYSLIIKDVTEE

DAGNYTILLSIKQSNVFKNLTATLIVNVKPQIYEKAVSSFPDPALYPLGSRQILTCTAYGIP

QPTIKWFWHPCNHNHSEARCDFCSNNEESFILDADSNMGNRIESITQRMAIIEGKNKMASTL

VVADSRISGIYICIASNKVGTVGRNISFYITDVPNGFHVNLEKMPTEGEDLKLSCTVNKFLY

RDVTWILLRTVNNRTMHYSISKQKMAITKEHSITLNLTIMNVSLQDSGTYACRARNVYTGEE

ILQKKEITIRGSTGTHTCPPCPAPELLGGPSVFLFPPKPKDTLMISRTPEVTCVVVDVSHED

PEVKFNWYVDGVEVHNAKTKPREEQYNSTYRVVSVLTVLHQDWLNGKEYKCKVSNKALPAPI

EKTISKAKGQPREPQVYTLPPSREEMTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTT

PPVLDSDGSFFLYSKLTVDKSRWQQGNVFSCSVMHEALHNHYTQKSLSLSPGK

M.W.: Calculated molecular mass (kDa): 96.9; Estimated by SDS-PAGE under reducing condition (kDa): 110-120

Calculated PI: 9.21

Calculated Extinction Coefficients (M-1 cm-1, at 280nm): 110920

Purity: >95% judged by SDS-PAGE under reducing condition (see the gel image above)

Formulation: Supplied at 0.5 mg/ml in sterile PBSpH7.4 (carrier free). The purified recombinant protein was labeled with Biotin (3-5 Biotin per molecule) using the standard procedure.

Endotoxin Level: <0.1 EU per 1 μg of purified recombinant protein determined by the LAL method

Biological Activity: Binds VEGF and inhibits VEGF-dependent proliferation of human umbilical vein endothelial cells (HUVEC)

FOR RESEARCH USE ONLY. NOT FOR DIAGNOSTIC OR THERAPEUTIC USE IN HUMAN.

Restriction: This product is not transferable or re-sellable. Customer obtain no right to transfer, assign, or sublicense its use rights, or to transfer, resell, package, or otherwise distribute the product, or to use the product for the benefit of any third party or for any commercial purpose. Customer may only use the product in compliance with applicable local, state and federal laws, regulations and rules. Customer may not directly or indirectly use the product or allow the transfer, transmission, export or re-export of all or any part of the product in violation of any export control law or regulation of the united states or any other relevant jurisdiction. Your use of this product constitutes acceptance of the terms of this limited use agreement. Please refer to our “terms & conditions” for details. If you are not willing to accept the limitation of this agreement, G&P Biosciences will accept return of the product for a full/partial refund.

Storage

The product is shipped at 4°C. Upon receipt, centrifuge the product briefly before opening the vial. It is recommended to store small aliquots at the temperature below –20°C for long-term storage and the product is stable for 3 months. The undiluted protein can be stored at 4°C for no more than 2 weeks.

Use a manual defrost freezer and avoid repeated freeze-thaw cycles.

FOR RESEARCH USE ONLY. NOT FOR DIAGNOSTIC OR THERAPEUTIC USE IN HUMAN.

References