Search Growth Factors & Cytokines By Gene Symbol

Recombinant Human FLT3 Ligand (FLT3LG)


  To order products, check the corresponding boxes on the right and then click on add to cart.
Product Source Size Cat. No. Price
Recombinant Human FLT3 Ligand (FLT3LG) CHO cells50 µg Z101145 $1,140.00
Cat. No. Product Name Qty. Promo/% Off Amount
    Total: $0.00  

Haul in savings with our December-only offers on restriction enzymes, growth factors, PCR products and more! Check in every week of December to unwrap a new gift! Details here:
*Notes about Promo Codes: For NON-DISCOUNT promo codes (i.e. free items or shipping) please enter them during check out in the Notes/Promo Code field. To enter a DISCOUNT promo code enter it into the corresponding box in the 'Promo/% Off' column and then click 'Update' for the given product. If the code is valid for that product the discount percentage will display in place of the box and the amount will become the discounted total for that product(s). If the code is not valid it will remain in the box, please double check the expiry and spelling, and if you feel the code should still be accepted please contact us.
Catalog Number Quantity Promotion Code (Optional)
Data Sheet
Print Version
Alternative Names FLT-3 ligand, FLT3L
Recombinant Human Fms-Related Tyrosine Kinase 3 Ligand (FLT3LG)
Description Known to bind to cells that express the tyrosine kinase receptor, FLT3LG promotes long-term expansion and differentiation of human pro-B cells. Human FLT3LG also stimulates the proliferation of cells expressing murine FLT-3 receptors. In combination with SCF and IL3, FLT3LG can cause expansion of cells with the marker spectrum CD34(+)/CD38(-). Alone, FLT3LG supports the survival of precursors in the lineage of blood-forming cells such as CFU-GM, CFU-GEMM, and the very primitive high proliferative potential colony-forming cells, HPP-CFC. FLT3LG has only marginal effects on progenitors for erythroid cells and megakaryocytes. Recombinant Human FLT3LG is a glycosylated, monomeric protein (with intra-chain disulfide bonds) that runs at approximately 26 kDa on a reducing SDS-PAGE.
Gene Symbol FLT3LG
Gene ID 2323
Accession No. P49771
Source CHO cells
Appearance Lyophilized Powder
Molecular Weight 17.0 kDa
Endotoxin Level <1.0 EU/μg of recombinant protein as determined by the LAL method
Purity >95% as determined by SDS-PAGE
Bioactivity The ED(50) as determined by the dose-dependent stimulation of the proliferation of Human AML5 cells was found to be in the range of 1.0 ng/mL.
Formulation Lyophilized from a 0.2 μm filtered PBS solution pH 7.0
Reconstitution A quick spin of the vial followed by reconstitution in distilled water to a concentration not less than 0.1 mg/mL. This solution can then be diluted into other buffers.
Storage The lyophilized protein is stable for at least one year from date of receipt at -70°C. Upon reconstitution, this cytokine can be stored in working aliquots at 2° - 8°C for one month, or at -20°C for six months, with a carrier protein without detectable loss of activity. Avoid repeated freeze/thaw cycles.
Usage For research use only. Not for diagnostic or therapeutic use.
Product Documents
Product References
Submit a new question:
How are endotoxin levels measured?
1. For estimating the endotoxin levels; we use the LAL (Limulus Amebocyte Lysate) method: The lysate from horseshoe crab amebocytes clots in the presence of very low endotoxin. This reaction is the basis of the Limulus amebocyte lysate (LAL) assay which was approved by the FDA in 1970.

· Endotoxin is generally measured in Endotoxin Units per milliliter (EU/mL).

· For recombinant proteins: EU is reported per microgram of protein.

· One EU = 0.1-0.2 ng endotoxin/µg of protein.

· At abm, we do the LAL chromogenic assays that can detect down to 0.01 EU/ml.
With regard to the BSA levels in some Growth Factors and Cytokines, can you please provide an explanation as to why they are so high?
The amount of BSA, as part of the formulation of a protein, can vary considerably depending on how much BSA was deemed optimum/necessary for protein stability in combination with /in-lieu of - other possible additives. The aforementioned formulations are somewhat analogous to the “carrier” versions of many formulations from “R and D systems” that have as high as 50 µg of BSA per µg of the recombinant protein product. If, needed or desired, abm scientists can substitute BSA for other stabilizing additives for most formulations.
Are your Escherichia coli sourced growth factors: 1) Human derived materials free? 2) Recombinant proteins free?
Yes, all of abm's growth factors made in Escherichia coli using recombinant technology contain no human derived-products or other recombinant proteins. In the rare cases of BSA presence, this will be mentioned in the product's formulation.