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Stromal Cell Derived Factor-1 Beta, Human Recombinant (CXCL12)
Catalog #: 228-11422
Product Description
Specifications
| Size | 10 µg, 1000 µg |
| Estimated Lead Time | 2-3 weeks |
| Species | Human |
| Accession Number | P48061 |
| Gene Id | 6387 |
| Protein Name / Synonyms | SDF-1, CXCL12, Pre-B cell growth-stimulating factor, PBSF, hIRH, chemokine (C-X-C motif) ligand 12, SDF1, SDF1B, TPAR1, SCYB12, SDF-1b, TLSF-b. |
| Expressed Region | The sequence of the first five N-terminal amino acids was determined and was found to be Lys-Pro-Val-Ser-Leu. |
| Expression System | E. coli |
| Purity | Greater than 98.0% as determined by:(a) Analysis by RP-HPLC.(b) Analysis by SDS-PAGE. |
| Format | Sterile Filtered White lyophilized (freeze-dried) powder. |
| Formulation | The CXCL12 protein was lyophilized from a concentrated (1mg/ml) sterile solution containing no additives. |
| Activity | The specific activity as determined by its ability to chemoattract human peripheral T cells activated with PHA and IL-2 using a concentation of 20-80ng/ml corresponding to a Specific Activity of 12,500-50,000IU/mg. |
| Research Area | Inflammation, Chemokine Biology |
| Shipping Type | Ambient temperature |
| Storage | -20°C |
Description
Description
Stromal Cell-Derived Factor-1 beta Human Recombinant produced in E.Coli is a non-glycosylated, Polypeptide chain containing 72 amino acids and having a molecular mass of 8508 Dalton. The SDF-1b is purified by proprietary chromatographic techniques.
Specifications
Protein Content
Protein quantitation was carried out by two independent methods: 1. UV spectroscopy at 280 nm using the absorbency value of 1.06 as the extinction coefficient for a 0.1% (1mg/ml) solution. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics). 2. Analysis by RP-HPLC, using a standard solution of SDF-1b as a Reference Standard.
Stability & Storage
Storage/Stability
Lyophilized SDF-1b although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution CXCL12 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.