Recombinant Human Receptor-Type Tyrosine-Protein Kinase Flt3 (FLT3) Protein (His)

Beta LifeScience SKU/CAT #: BLC-06474P
Greater than 85% as determined by SDS-PAGE.
Greater than 85% as determined by SDS-PAGE.

Recombinant Human Receptor-Type Tyrosine-Protein Kinase Flt3 (FLT3) Protein (His)

Beta LifeScience SKU/CAT #: BLC-06474P
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Product Overview

Description Recombinant Human Receptor-Type Tyrosine-Protein Kinase Flt3 (FLT3) Protein (His) is produced by our Baculovirus expression system. This is a protein fragment.
Purity Greater than 85% as determined by SDS-PAGE.
Uniprotkb P36888
Target Symbol FLT3
Species Homo sapiens (Human)
Expression System Baculovirus
Tag N-10His
Target Protein Sequence HKYKKQFRYESQLQMVQVTGSSDNEYFYVDFREYEYDLKWEFPRENLEFGKVLGSGAFGKVMNATAYGISKTGVSIQVAVKMLKEKADSSEREALMSELKMMTQLGSHENIVNLLGACTLSGPIYLIFEYCCYGDLLNYLRSKREKFHRTWTEIFKEHNFSFYPTFQSHPNSSMPGSREVQIHPDSDQISGLHGNSFHSEDEIEYENQKRLEEEEDLNVLTFEDLLCFAYQVAKGMEFLEFKSCVHRDLAARNVLVTHGKVVKICDFGLARDIMSDSNYVVRGNARLPVKWMAPESLFEGIYTIKSDVWSYGILLWEIFSLGVNPYPGIPVDANFYKLIQNGFKMDQPFYATEEIYIIMQSCWAFDSRKRPSFPNLTSFLGCQLADAEEAMYQNV
Expression Range 564-958aa
Protein Length Partial
Mol. Weight 49.1 kDa
Research Area Immunology
Form Liquid or Lyophilized powder
Buffer Liquid form: default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. Lyophilized powder form: the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
Reconstitution Briefly centrifuged the vial prior to opening to bring the contents to the bottom. Reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL. It is recommended to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. The default final concentration of glycerol is 50%.
Storage 1. Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. 2. Avoid repeated freeze-thaw cycles. 3. Store working aliquots at 4°C for up to one week. 4. In general, protein in liquid form is stable for up to 6 months at -20°C/-80°C. Protein in lyophilized powder form is stable for up to 12 months at -20°C/-80°C.
Notes Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.

Target Details

Target Function 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. Promotes phosphorylation of FES, FER, PTPN6/SHP, PTPN11/SHP-2, PLCG1, and STAT5A and/or STAT5B. Activation of wild-type FLT3 causes only marginal activation of STAT5A or STAT5B. Mutations that cause constitutive kinase activity promote cell proliferation and resistance to apoptosis via the activation of multiple signaling pathways.
Subcellular Location Membrane; Single-pass type I membrane protein. Endoplasmic reticulum lumen. Note=Constitutively activated mutant forms with internal tandem duplications are less efficiently transported to the cell surface and a significant proportion is retained in an immature form in the endoplasmic reticulum lumen. The activated kinase is rapidly targeted for degradation.
Protein Families Protein kinase superfamily, Tyr protein kinase family, CSF-1/PDGF receptor subfamily
Database References

HGNC: 3765

OMIM: 136351

KEGG: hsa:2322

STRING: 9606.ENSP00000241453

UniGene: PMID: 29950146

  • Results indicate that DNMT3A mutations alone do not affect the clinical outcomes of AML patients undergoing allogeneic HSCT, but when accompanied by FLT3-ITD mutations, the OS was significantly reduced (5-year OS 0% for DNMT3A R882mut/FLT3-ITDpos patients vs. 62% DNMT3A R882wt/FLT3-ITDneg, p=0.025) and the relapse rate increased. PMID: 29786546
  • RIPK3-dependent cell death and inflammasome activation in FLT3-internal-tandem-duplication-expressing leukemia-initiating cells PMID: 27517160
  • The results suggested that FLT3 ITD mutations could become an indicator of poor prognosis of APL, and these patients should receive more intensive therapy according to current guidelines. PMID: 29251252
  • Low FLT3 expression is associated with Pancreatic ductal adenocarcinoma. PMID: 30275197
  • DNMT3A R882 mutation plays an important role in CN-AML patients' prognosis and clinical outcomes in the presence and absence of NPM1 and FLT3 mutations. PMID: 29079128
  • the FLT3 inhibitor AC220 inhibited glutamine flux into the antioxidant factor glutathione profoundly due to defective glutamine import. PMID: 28947392
  • Mutation in FLT3 gene is associated with Acute Myeloid Leukemia. PMID: 29530994
  • Acute myeloid leukemia harboring internal tandem duplication of FMS-like tyrosine kinase 3 (AML(FLT3-ITD)) is associated with poor prognosis. PMID: 29330746
  • Impact of FLT3-ITD diversity on response to induction chemotherapy in patients with acute myeloid leukemia has been described. PMID: 28034991
  • The results of the present study showed that the overexpression of FLT3 is a potential risk factor in leukemia. PMID: 29257272
  • In this study, FLT3 and NPM1 mutations were evaluated in adult Iranian patients with de novo cytogenetically normal acute myeloid leukemia and its correlations with clinical and laboratory parameters were also assessed. PMID: 28294102
  • FLT3 and FLT3-ITD can directly bind and selectively phosphorylate p27kip1 on tyrosine residue 88 in acute myeloid leukemia. Inhibition of FLT3-ITD in cell lines strongly reduced p27 tyrosine 88 phosphorylation and resulted in increased p27 levels and cell cycle arrest PMID: 28522571
  • study showed that FLT3 can be targeted by FLT3-CAR T cells for the treatment FLT3(+) AML. FLT3-CAR T cells may provide a new immunotherapeutic approach for AML patients PMID: 28496177
  • The high expressions of BCRP mRNA calculated with Pfaffl's rule and FLT3-ITD are independent poor risk factors in adult patients with AML and intermediate or normal karyotype. PMID: 28618074
  • The new and recurrent FLT3 juxtamembrane deletion mutation shows a dominant negative effect on the wild-type FLT3 receptor. PMID: 27346558
  • FLT3 cell-surface expression did not vary by FLT3 mutational status, but high FLT3 expression was strongly associated with KMT2A rearrangements. Our study found that there was no prognostic significance of FLT3 cell surface expression in pediatric Acute Myeloid Leukemia PMID: 28108543
  • DNA mutational analysis in FLT3 in acute myeloid leukemia. PMID: 27071442
  • data confirm MLL-PTD and, to a lesser extent, FLT3-ITD as common events in +11 AML.6, 7, 8 However, the high mutation frequencies of U2AF1 and genes involved in methylation (DNMT3A, IDH2) have hitherto not been reported in +11 AML PMID: 27435003
  • The cytokine Fms-like tyrosine kinase 3 ligand is an important regulator of hematopoiesis. Its receptor, Flt3, is expressed on myeloid, lymphoid and dendritic cell progenitors and is considered an important growth and differentiation factor for several hematopoietic lineages. [review] PMID: 28538663
  • FLT3 amplification in solid cancers is infrequently observed using targeted genomic profile, as yet, FLT3 amplification does not seem to be an actionable target or a proper biomarker for FLT3 inhibitor sensitivity. PMID: 27906677
  • FLT3 has a role in cytarabine transport by SLC29A1 in pediatric acute leukemia PMID: 27391351
  • Data indicate a pathway MYSM1/miR-150/FLT3 that inhibits proliferation of B1a cells, which may be involved in the pathogenesis of systemic lupus erythematosus (SLE). PMID: 27590507
  • findings confirm that FLT3-ITD-location influences disease biology and leads to changes in global gene expression. In our model, ITD-location alters proliferative capacity and sensitivity to FLT3-TKI-treatment in vivo PMID: 26487272
  • a decision analysis comparing allo-HCT vs chemotherapy in first complete remission for patients with cytogenetically intermediate-risk acute myeloid leukemia, depending on the presence or absence of FLT3-ITD), NPM1, and CEBPA mutations showed that allo-HCT was a favored postremission strategy in patients with FLT3-ITD, and chemotherapy was favored in patients with biallelic CEBPA mutations. PMID: 27040395
  • ATM/G6PD-driven redox metabolism promotes FLT3 inhibitor resistance in acute myeloid leukemia that can be successfully reversed. PMID: 27791036
  • Data suggest that there is a place for escalated daunorubicin dosing for fms-like tyrosine kinase 3 (FLT3)-ITD mutated cases. PMID: 27268085
  • Integrin alphavbeta3 has a role in enhancing beta-catenin signaling in acute myeloid leukemia harboring Fms-like tyrosine kinase-3 internal tandem duplication mutations PMID: 27248172
  • Review of the role of the most common form of FMS-like tyrosine kinase 3 (FLT3) mutation (internal tandem duplication) in acute myeloid leukemia. PMID: 28470536
  • the present cohort study demonstrated that FLT3-ITD and DNMT3A R882 double mutation predicts poor prognosis in Chinese AML patients receiving chemotherapy or allo-HSCT treatment. PMID: 28616699
  • Although transient responses to FLT3 inhibitors are often observed in case of disease relapse, the most promising approach is the use of FLT3 inhibitors either in combination with induction chemotherapy or as consolidation/maintenance therapy after allogeneic hematopoietic cell transplantation. PMID: 27775694
  • In this review, we focus on three key areas in acute myeloid leukemia (AML) developmental therapeutics: FLT3 inhibitors, IDH(IDH1 and IDH2 ) inhibitors, and drugs that may be particularly beneficial in secondary AML PMID: 28561688
  • Concomitant monitoring of WT1 and FLT3-ITD expression in FLT3-ITD acute myeloid leukemia patients PMID: 28211167
  • FLT3/ITD are present at leukemic stem cells level and may be a primary and not secondary event in leukemogenesis, and the oncogenic events of FLT3/ITD happen at a cell stage possessing CD123 PMID: 27465508
  • Sorafenib may enable cure of a proportion of very poor risk FLT3-internal tandem duplication-positive acute emyeloid leukemia relapsing after allogeneic stem cell transplantation. PMID: 29055209
  • Results provide evidence that mutations in the tyrosine kinase domain in FLT3 were found in 7% of Pakistani patients with acute myeloid leukemia. PMID: 27735988
  • FLT3/ITD increases aerobic glycolysis through AKT-mediated upregulation of mitochondrial hexokinase (HK2). Inhibition of glycolysis preferentially causes severe ATP depletion and massive cell death in FLT3/ITD leukemia cells. PMID: 28194038
  • Our results indicate that CD4 expression and older age are adverse prognostic factors in wild-type NPM1, FLT3-ITD-negative CN-AML. PMID: 28318150
  • FLT3 mutation is associated with Metaplastic Breast Cancer. PMID: 27568101
  • Collectively, we have developed a novel targeted therapeutic strategy, using FLT3L-guided miR-150-based nanoparticles, to treat FLT3-overexpressing AML with high efficacy and minimal side effects. PMID: 27280396
  • Y842 is critical for FLT3-mediated RAS/ERK signaling and cellular transformation. PMID: 28271164
  • value of FLT3-ITD allelic ratio in AML in risk assessment and evaluating prognosis PMID: 27416910
  • DOCK2 is a potential therapeutic target for novel AML treatments, as this protein regulates the survival of leukemia cells with elevated FLT3 activity and sensitizes FLT3/ITD leukemic cells to conventional antileukemic agents. PMID: 27748370
  • Gedatolisib significantly extended survival of mice in a sorafenib-resistant acute myeloid leukemia (AML) patient-derived xenograft model. Taken together, our data suggest that aberrant activation of the PI3K/mTOR pathway in FLT3-ITD-dependent AML results in resistance to drugs targeting FLT3. PMID: 26999641
  • HHEX could replace RUNX1 in cooperating with FLT3-ITD to induce Acute myeloid leukemia (AML). PMID: 28213513
  • mutated FLT3-ITD and JAK2 augment reactive oxygen species production and homologous recombination, shifting the cellular milieu toward illegitimate recombination. PMID: 28108507
  • these data reveal a novel mechanism which regulates acute myeloid leukemia cell death by ceramide-dependent mitophagy in response to FLT3-ITD targeting. PMID: 27540013
  • MSI2 and FLT3 are significantly co-regulated in human AML PMID: 28107692
  • Sorafenib-resistant leukemia cells with a FLT3/ITD mutation are sensitive to glycolytic inhibitors. PMID: 27132990
  • Factors that did not influence the relapse risk included: age, graft type, graft source, type of FLT3 mutation, or conditioning intensity PMID: 28052408
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    Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

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