| Official Full Name |
Recombinant Human Stromal-Cell Derived Factor-1 alpha/CXCL12 alpha (rHuSDF-1alpha/CXCL12alpha) |
| Squence |
 |
| Amino Acid Sequence |
KPVSLSYRCP CRFFESHVAR ANVKHLKILN TPNCALQIVA RLKNNNRQVC IDPKLKWIQE YLEKALNK |
| Synonyms |
SDF-1 alpha, hSDF-1 alpha, IRH, hIRH, PBSF |
| Accession Number |
P48061 |
| GeneID |
6387 |
| Summary |
CXCL12 also known as SDF-1 is belonging to the CXC chemokine family. It is encoded by the CXCL12 gene. In recently study, Human CXCL12 is expressed as six isoforms that differ only in the C-terminal tail. And all SDF-1 isoforms undergo proteolytic processing of the first two N-terminal amino acids. Contrast to the canonical sequence SDF-1β, SDF-1alpha is shorter by four amino acids at the C-terminal tail. On the cell surface, the receptor for this chemokine is CXCR4 and syndecan4. CXCL12 is strongly chemotactic for T-lymphocytes, monocytes, but not neutrophils. CXCL12 is a very important factor in carcinogenesis and the neovascularisation linked to tumor progression. |
| Source |
Escherichia coli. |
| Molecular Weight |
Approximately 8.0 kDa, a single non-glycosylated polypeptide chain containing 68 amino acids. |
| Biological Activity |
Fully biologically active when compared to standard. The biological activity determined by a chemotaxis bioassay using PHA and rHuIL-2 activated human peripheral blood T-lymphocytes is in a concentration range of 20-80 ng/ml. |
| Appearance |
Sterile filtered white lyophilized (freeze-dried) powder. |
| Formulation |
Lyophilized from a 0.2 um filtered concentrated solution in 20 mM PB pH 7.0, 130 mM NaCl. |
| Endotoxin |
Less than 1 EU/ug of rHuSDF-1α/CXCL12α as determined by LAL method. |
| Reconstitution |
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. |
| Stability and Storage |
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.- 12 months from date of receipt, -20 to -70 °C as supplied.- 1 month, 2 to 8 °C under sterile conditions after reconstitution.- 3 months, -20 to -70 °C under sterile conditions after reconstitution. |
| References |
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| SDS-PAGE |
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| Safety Data Sheet (SDS) Download |
Click to download |
| Technical Data Sheet (TDS) Download |
Click to download |
