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SCF Rat/ 重組大鼠干細胞因子產(chǎn)品編號：CYT-323

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SCF Rat/ 重組大鼠干細胞因子產(chǎn)品編號：CYT-323
產(chǎn)品規(guī)格：2μg/10μg/1mg

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SCF Rat/ 重組大鼠干細胞因子

產(chǎn)品編號：CYT-323
產(chǎn)品規(guī)格：2μg/10μg/1mg

Synonyms	Kit ligand Precursor, C-kit ligand, SCF, Mast cell growth factor, MGF, SF, KL-1, Kitl, DKFZp686F2250, Hematopoietic growth factor KL.
Introduction	Stem cell factor / KIT ligand （SCF） is a cytokine which binds CD117 （c-Kit）. SCF is also known as "steel factor" or "c-kit ligand". SCF exists in two forms, cell surface bound SCF and soluble （or free） SCF. Soluble SCF is produced by the cleavage of surface bound SCF by metalloproteases. SCF is a growth factor important for the survival, proliferation, and differentiation of hematopoietic stem cells and other hematopoietic progenitor 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）.
Description	Stem cell factor Rat Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 164 amino acids （26-189） and having a molecular mass of 18.4 kDa. The Rat SCF is purified by proprietary chromatographic techniques.
Source	Escherichia Coli.
Physical Appearance	Sterile Filtered White lyophilized （freeze-dried） powder.
Formulation	Lyophilized from a concentrated （1mg/ml） solution in water containing 0.02% NaHCO3.
Solubility	It is recommended to reconstitute the lyophilized SCF in sterile 18MΩ-cm H2O not less than 100μg/ml, which can then be further diluted to other aqueous solutions.
Stability	Lyophilized rat SCF although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution SCF should be stored at 4°C between 2-7 days and for future use below -18°C. For long term storage it is recommended to add a carrier protein （0.1% HSA or BSA）. Please prevent freeze-thaw cycles.
Purity	Greater than 98.0% as determined by（a） Analysis by RP-HPLC. （b） Analysis by SDS-PAGE.
Amino acid sequence	MQEICRNPVT DNVKDITKLV ANLPNDYMIT LNYVAGMDVL PSHCWLRDMV THLSVSLTTL LDKFSNISEG LSNYSIIDKL GKIVDDLVAC MEENAPKNVK ESLKKPETRN FTPEEFFSIF NRSIDAFKDF MVASDTSDCV LSSTLGPEKD SRVSVTKPFM LPPVA.
Biological Activity	The ED50 is determined by the dose-dependant stimulation of the proliferation of human TF-1 cells which is < 10 ng/ml, corresponding to a specific activity of > 1 x 105 units/mg.
Usage	ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.