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SRP3044

Sigma-Aldrich

Flt-3 Ligand human

Animal-component free, recombinant, expressed in E. coli, ≥98% (SDS-PAGE), ≥98% (HPLC), suitable for cell culture

Synonym(s):

Fms-related tyrosine kinase 3 ligand

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About This Item

UNSPSC Code:
12352200
NACRES:
NA.32

biological source

human

recombinant

expressed in E. coli

Assay

≥98% (HPLC)
≥98% (SDS-PAGE)

form

lyophilized

potency

≤10 ng/mL ED50 ((OCI-AML5 cell proliferation))

mol wt

17.6 kDa

packaging

pkg of 10 μg

technique(s)

cell culture | mammalian: suitable

impurities

<0.1 EU/μg endotoxin, tested

color

white to off-white

UniProt accession no.

shipped in

wet ice

storage temp.

−20°C

Gene Information

human ... FLT3LG(2323)

General description

FLT3LG (Fms-related tyrosine kinase 3 ligand) is a transmembrane glycoprotein and a ligand for FLT3 receptor. It is widely expressed in human tissues. The protein exists in membrane bound as well as secreted forms. Binding of FLT3LG to FLT3 results in receptor dimerization, activation of the tyrosine kinase domain, autophosphorylation and thereby activation of the receptor. Recombinant human Flt3-Ligand is a soluble 17.6kDa protein consisting of 155 amino acid residues.

Biochem/physiol Actions

FLT3LG (Fms-related tyrosine kinase 3 ligand) is a hematopoietic growth factor. It plays a significant role in the development of myeloid and plasmacytoid dendritic cells. It is also involved in the expansion of Treg (T regulatory) cells, thereby offering treatment for autoimmune disorders and transplantation processes. FLT3LG is associated with autoimmune arthritis, for instance rheumatoid arthritis and primary Sjogren′s syndrome. FLT3LG along with FLT3 is involved in the proliferation of primary AML (acute myeloid leukemia) blasts and autocrine signaling in AML.

Sequence

MTQDCSFQHS PISSDFAVKI RELSDYLLQD YPVTVASNLQ DEELCGGLWR LVLAQRWMER LKTVAGSKMQ GLLERVNTEI HFVTKCAFQP PPSCLRFVQT NISRLLQETS EQLVALKPWI TRQNFSRCLE LQCQPDSSTL PPPWSPRPLE ATAPT

Physical form

Lyophilized from a sterile (0.2 micron) filtered aqueous solution containing 10 mM sodium phosphate, 50 mM NaCl, pH 7.5

Reconstitution

Centrifuge the vial prior to opening. Reconstitute in water to a concentration of 0.1-1.0 mg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 week. For extended storage, it is recommended to further dilute in a buffer containing a stabilizer (example 5% Trehalose) and store in working aliquots at -20°C to -80°C.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Serum concentrations of Flt-3 ligand in rheumatic diseases.
Nakamura K, et al.
Bioscience Trends, 9, 342-342 (2015)
Further activation of FLT3 mutants by FLT3 ligand.
Zheng R, et al.
Oncogene, 30, 4004-4004 (2011)
FMS-related tyrosine kinase 3 ligand (Flt3L)/CD135 axis in rheumatoid arthritis.
Ramos MI, et al.
Arthritis Research & Therapy, 15, R209-R209 (2013)
Flt3 ligand expands CD4+ FoxP3+ regulatory T cells in human subjects.
Klein O, et al.
European Journal of Immunology, 43, 533-533 (2013)
K Mackarehtschian et al.
Immunity, 3(1), 147-161 (1995-07-01)
The flk2 receptor tyrosine kinase has been implicated in hematopoietic development. Mice deficient in flk2 were generated. Mutants developed into healthy adults with normal mature hematopoietic populations. However, they possessed specific deficiencies in primitive B lymphoid progenitors. Bone marrow transplantation

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