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Recombinant Human Stem Cell Factor (rHuSCF)

CAT: 0013-GTR18991660-01Size: 1 mgDry Ice: NoHazardous: No
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CAT#:0013-GTR18991660-01Size:1 mg
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24/48H Stock Items & 2 to 6 Weeks non Stock Items.
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Description
C-kit ligand, the recently identified ligand for the kit tyrosine kinase receptor, is mapped to the mouse S1 locus. This pleiotropic cytokine, alternately known as stem cell factor (SCF), mast cell growth factor (MGF) and steel-factor (SLF), plays essential roles in gametogenesis, melanogenesis and early stages of hematopoiesis. In vitro and in vivo, SCF can stimulate the proliferation of mature, as well as the proliferation and maturation of immature, mast cells. On purified primitive human and mouse hematopoietic precursors, SCF acts in a synergistic manner with various growth factors, such as IL-1, IL-3, IL-6, IL-7, and Epo, to induce myeloid, erythroid and lymphoid lineage colony formation. The finding that SCF is also expressed in the nervous system suggests a possible role for SCF in the development of the nervous system.
Source
Escherichia coli.
Field of Research
Stem Cell & Developmental Biology
Endotoxin
Less than 1EU/mg of rHuSCF as determined by LAL method.
Purity
>97% by SDS-PAGE and HPLC analyses.
Bioactivity
Fully biologically active when compared to standard. The ED50 as calculated by the dose-dependant stimulation of the proliferation of human TF-1 cells is less than 3 ng/ml, corresponding to a Specific Activity of >3.3 x 105 IU/mg.
Form
Lyophilized from a 0.2mm filtered concentrated solution in PBS, pH 7.4.
Molecular Weight
Approximately 18.4 kDa, a single non-glycosylated polypeptide chain containing 165 amino acids.
Storage Conditions
This lyophilized preparation is stable at 2-8°C, but should be kept at -20°C for long term storage, preferably desiccated. Upon reconstitution, the preparation is stable for up to one week at 2-8°C. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20°C to -70°C. Avoid repeated freeze/thaw cycles.
Notes
For research use only.
Applications Notes
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at < -20°C. Further dilutions should be made in appropriate buffered solutions.
Preservative
Lyophilized from a 0.2mm filtered concentrated solution in PBS, pH 7.4.
AA Sequence
MEGICRNRVT NNVKDVTKLV ANLPKDYMIT LKYVPGMDVL PSHCWISEMVVQLSDSLTD LDKFSNISEG LSNYSIIDKL VNIVDDLVEC VKENSSKDLK KSFKSPEPRL FTPEEFFRIF NRSIDAFKDF VVASETSDCV VSSTLSPEKD SRVSVTKPFM LPPVA

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