Name : SDF-1β/CXCL12, Human
Product Concentration :
Background :
Stromal-Cell Derived Factor-1 beta (SDF-1β), also known as SCYB12, PBSF and CXCL12, is an 8.3 kDa, heparin-binding member of the CXC (or alpha) family of chemokines and signal through the CXCR4 receptor. SDF-1α and β are reported to be monomers at neutral pH and physiologic ionic strength, On the cell surface, this may well facilitate SDF-1 interaction with its two receptors, CXCR4 and syndecan4. Heparin sulfate is known to protect SDF-1 from proteolysis, and CXCR4 exists constitutively as a dimer. Among its many functions, CXCL12 is known to influence lymphopoiesis, regulate patterning and cell number of neural progenitors, and promote angiogenesis (12, 13). It also enhances the survival of myeloid progenitor cells
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 20.0-80.0 ng/ml.
expression system :
E. coli
Tag :
SDF-1β/CXCL12 (Lys22-Met93)Accession # P48061
Protein Accession No. :
P48061
Synonyms :
SDF-1-β; SDF1β; SDF-1 beta; CXCL-12; IRH; PBSF; SCYB12; SDF1; TLSF; TPAR1; C-X-C motif chemokine ligand 12
Molecular Weight :
Purity :
> 97% as analyzed by SDS-PAGE> 97% as analyzed by HPLC
Product Concentration :
Lyophilized from a 0.2 μm filtered solution in PBS, pH 7.4.
Storage and Stability :
Upon receiving, this product remains stable for up to 6 months at -70°C or -20°C. Upon reconstitution, the product should be stable for up to 1 week at 4°C or up to 3 months at -20°C. Avoid repeated freeze-thaw cycles.
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