Name : Human FLT3/Flk-2 Protein

Product Source :
Recombinant Human FLT3/Flk-2 Protein is expressed from HEK293 with hFc tag at the C-Terminus. It contains Asn27-Asn541.[Accession | P36888-1]

Molecular Weight :
The protein has a predicted MW of 84.9 kDa. Due to glycosylation, the protein migrates to 100-120 kDa based on Tris-Bis PAGE result.

Endotoxin Level :
Less than 1EU per ug by the LAL method.

Purity :
> 95% as determined by Tris-Bis PAGE

Formulation :
Lyophilized from 0.22μm filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.

Reconstitution :
Centrifuge the tube before opening. Reconstituting to a concentration more than 100 μg/ml is recommended. Dissolve the lyophilized protein in distilled water.

Storage and Stability :
-20 to -80°C for 12 months as supplied from date of receipt. -80°C for 3-6 months after reconstitution. 2-8°C for 2-7 days after reconstitution. Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.

Product Concentration :
Tris-Bis PAGE Human FLT3 on Tris-Bis PAGE under reduced condition. The purity is greater than 95%. ELISA Data Immobilized Human FLT3 Ligand, His Tag at 1μg/ml (100μl/Well) on the plate. Dose response curve for Human FLT3, hFc Tag with the EC50 of 13.4ng/ml determined by ELISA (QC Test). SPR Data Mouse FLT3 Ligand, His Tag captured on CM5 Chip via anti-his antibody can bind Human FLT3, hFc Tag with an affinity constant of 0.18 nM as determined in SPR assay (Biacore T200).

Background :
The Flt-3 (fms-like tyrosine kinase) receptor, also named Flk-2 (fetal liver kinase) and Stk-1(stem cell tyrosine kinase) is a member of the class III subfamily of receptor tyrosine kinases that also includes KIT, the receptor for SCF and FMS, the receptor for M-CSF. Tyrosine-protein kinase that acts as cell-surface receptor for the cytokine FLT3LG and regulates differentiation, proliferation and survival of hematopoietic progenitor cells and of dendritic cells. Promotes phosphorylation of SHC1 and AKT1, and activation of the downstream effector MTOR. Promotes activation of RAS signaling and phosphorylation of downstream kinases, including MAPK1/ERK2 and/or MAPK3/ERK1.

Synonyms :
CD135; FLK2; STK-1; Flt-3

References & Citations :
(1)Small D. Targeting FLT3 for the Treatment of Leukemia[J]. Seminars in Hematology, 2008, 45(supp-S2).

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