Recombinant Rat SCF/c-kit Ligand Protein Summary
Description |
A single non-glycosylated polypeptide chain containing 165 amino acids corresponding to SCF/c-kit Ligand Source: E. coli Uniprot ID: P21581 Amino Acid Sequence: MQEICRNPVT DNVKDITKLV ANLPNDYMIT LNYVAGMDVL PSHCWLRDMV THLSVSLTTL LDKFSNISEG LSNYSIIDKL GKIVDDLVAC MEENAPKNVK ESLKKPETRN FTPEEFFSIF NRSIDAFKDF MVASDTSDCV LSSTLGPEKD SRVSVTKPFM LPPVA This lyophilized preparation is stable at 2-8 degrees C, but should be kept at -20 degrees C for long term storage, preferably desiccated. Upon reconstitution, the preparation is most stable at -20 to -80 degrees C, and can be stored for one week at 2-8 degrees C. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20 degrees C to -80 degrees C. Avoid repeated freeze/thaw cycles. |
Details of Functionality |
SCF Protein is fully biologically active when compared to standard. The ED50 as determined by a cell proliferation assay using murine MC/9-2 mast cells is less than 5 ng/ml, corresponding to a specific activity of > 2.0 x 10^5 IU/mg. |
Source |
E. coli |
Protein/Peptide Type |
Recombinant Protein |
Gene |
KITLG |
Purity |
>95%, by SDS-PAGE and HPLC |
Endotoxin Note |
Less than 1 EU/ug of SCF/c-kit Ligand as determined by LAL method. |
Applications/Dilutions
Dilutions |
|
Theoretical MW |
18.5 kDa. Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors. |
Packaging, Storage & Formulations
Storage |
Store at -20 to -70C as supplied. After reconstitution, store at 2 to 8C for 1 month and at -20 to -70C for long term storage. Avoid repeated freeze-thaw cycles. |
Buffer |
Lyophilized from a 0.2 um filtered concentrated solution in PBS, pH 7.4. |
Preservative |
No Preservative |
Concentration |
LYOPH |
Purity |
>95%, by SDS-PAGE and HPLC |
Reconstitution Instructions |
Recommended to centrifuge prior to opening. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0mg/mL. Apportion stock solutions into working aliquots and store at <-20C. |
Alternate Names for Recombinant Rat SCF/c-kit Ligand Protein
Background
Stem Cell Factor (SCF) which binds to the c-Kit receptor is produced by fibroblasts and endothelial cells. The soluble and transmembrane forms of the protein are formed by alternative splicing of the same RNA transcript and the presence of both soluble and transmembrane SCF is required for normal hematopoietic function. SCF plays an important role in hematopoiesis, spermatogenesis, and melanogenesis. In addition, it also promotes mast cell adhesion, migration, proliferation, and survival 3. Rat SCF shares 75 % - 90 % a.a. sequence identity with canine, feline, mouse, and human SCF. Furthermore, rat SCF is active on mouse and human cells, but human SCF is only weakly active on mouse cells.
Limitations
This product is for research use only and is not approved for use in humans or in clinical diagnosis. Peptides and proteins are
guaranteed for 3 months from date of receipt.
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