Recombinant Human SCF Protein, E. coli-derived, GMP grade

Product Code: G-GFC0088

Catalog Number Unit Size Price
G-GFC0088-50 ug 50 ug Online Inquiry
G-GFC0088-1 mg 1 mg Online Inquiry

Description

Stem cell factor (SCF), often known as Kit Ligand, KITL or KITLG, is involved in pathways that control the regulation of cell survival, migration and proliferation, hematopoiesis, stem cell maintenance, gametogenesis, mast cell development, and melanogenesis. SCF can exist both as a transmembrane protein and a soluble protein. The soluble and transmembrane forms of the protein are formed by alternative splicing of the same R transcript.
Together with other cytokines such as thrombopoietin and Flt3/Flk-2 Ligand, SCF is commonly used to promote expansion of primitive hematopoietic stem cells and multi-potent progenitor cells in culture. In synergy with various growth factors, including IL-2, IL-3, IL-6, IL-7, G-CSF, and erythropoietin, SCF increases proliferation and differentiation of myeloid and erythroid progenitor cells and a subset of lymphoid progenitor cells. SCF is also a primary growth and activation factor for mast cells and eosinophils.

Specification

Source
E. coli-derived human SCF/c-kit Ligand protein, Glu26-Ala189, with a N-terminal Met
Produced using non-animal reagents in an animal-free laboratory.
Manufactured and tested under cGMP guidelines.
Reactivity
Human
N-terminal Sequence
Met-Glu26-Gly-Ile-(Cys)-Arg-Asn-Arg-Val-Thr
Purity
>97%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie Blue Staining. The molecular weight by mass spectrometry is 18573 Da ± 50 Da.
Molecular Mass (Predicted)
19 kDa
SDS-PAGE
18 kDa, under reducing conditions.
Accession
P21583.1
Biological Activity
Measured in a cell proliferation assay using TF‑1 human erythroleukemic cells. Kitamura, T. et al. (1989) J. Cell Physiol. 140:323. The ED50 for this effect is 1.00-8.00 ng/mL.  The specific activity of recombinant human SCF is >1.0 x 106 units/mg, which is calibrated against the human SCF reference standard (NIBSC code: 91/682).
Endotoxin
<0.10 EU per 1 μg of the protein by the LAL method.
Application
Bioactivity
For research or further manufacturing use only. Not for use in humans.

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