Stem Cell Factor (SCF) is a stromal cell-derived cytokine synthesized by fibroblasts and other cell types. SCF promotes proliferation and early differentiation of cells at the level of multipotential stem cells. SCF is a growth factor important for proliferation, and differentiation of hematopoietic stem cells. One of its roles is to change the BFU-E (burst-forming unit-erythroid) cells, which are the earliest erythrocyte precursors in the erythrocytic series, into the CFU-E (colony-forming unit-erythroid).

Sequence:
MTQDCSFQHSPISSDFAVKIRELSDYLLQDYPVTVASNLQDEELCGGLWRLVLAQRWMERLKTVAGSKMQGLLERVNTEIHFVTKCAFQPPP
SCLRFVQTNISRLLQETSEQLVALKPWITRQNFSRCLELQCQPDSSTLPPPWSPRPLEATAPTA with polyhistidine tag at the C-terminus

Source:
Escherichia coli
Animal-free reagent and laboratory
Manufactured and tested under GMP guideline

Endotoxin level:
<0.1 EU per 1 μg of the protein by the LAL method. Activity:
Measure by its ability to induce proliferation in BaF3 cells transfected with mouse Flt-3. The ED₅₀ for this effect is <0.8 ng/mL. The specific activity of recombinant human Flt-3 Ligand is > 1.5 x 10⁶ IU/mg.

Purity:
>95% as determined by SDS-PAGE. Purified by Ni-NTA chromatography.

Formulation:
The protein was lyophilized from a solution containing 1X PBS, pH 8.0.

Reconstitution:
It is recommended to reconstitute the lyophilized protein in sterile H₂O to a concentration not less than 100 μg/mL and incubate the stock solution for at least 20 min to ensure sufficient re-dissolved.

Storage:
Lyophilized protein should be stored at -20°C. This product is stable for one year upon receipt, when handled and stored as instructed. Upon reconstitution, protein aliquots should be stored at -20°C or -80°C. Avoid repeated freeze/thaw cycles.

Note:
Please use within one month after protein reconstitution.

Specification:
Croyez GMP® recombinant proteins are manufactured in ISO 13485:2016 and GMP-certified facility.
The processes include:
● Testing and traceability of raw material
● Records of the maintenance and equipment calibration
● Personnel training records
● Batch-to-batch consistency
● Documentation of QA control and process changes
● Manufactured and tested under an ISO 13485:2016 certified quality management system
● Stability monitor of product shelf-life

Reference:
1. Dong J. et al. (2002) Cancer Biol Ther. 1,5: 486-9.
2. Stirewalt DL, Radich JP. (2003) Nat Rev Cancer. 3,9: 650‐65.
3. Tsapogas P. et al. (2017) Int J Mol Sci. 18,6:1115.

Data Sheet