Description

Alternate Names:  CXCL12, PBSF               Accession Number: P48061
Description:  Stromal cell-derived factor-1 alpha (SDF-1 α), also called CXCL12a, is one of two SDF-1 splice variants made by a wide variety of cells upon stimulation by inflammatory cytokines such as TNF, IL-1, and LPS. SDF-1α signals through the G protein-coupled receptor CXCR4 to recruit activated leukocytes. Human and mouse SDF-1 α share 99% sequence identity.
Source:  Genetically modified E.coli.
Predicted MW: Monomer, 8 kDa (68 aa) ***Under non-reducing conditions, samples prepared at higher working concentrations are shown to produce a band of approximately 16 kDa on an SDS PAGE gel, which may represent dimer formation.
AA Sequence:  KPVSLSYRCP CRFFESHVAR ANVKHLKILN TPNCALQIVA RLKNNNRQVC IDPKLKWIQE YLEKALNK
Formulation:  Lyophilized from a sterile (0.2 micron) filtered aqueous solution containing 0.1% Trifluoroacetic Acid (TFA)

Product Specifications*
*Lot-specific values for the following specifications are supplied with each product on its corresponding COA.  The values provided here are minimum expected values to pass internal requirements. 

Preparation and Storage
Country of Origin:  USA        Shipping:  Room temperature             

Storage Prior to Reconstitution:  -20°C
Product Reconstitution:  Sterile water at 0.1 mg/mL
Instructions:  Centrifuge vial before opening. Suspend the product by gently pipetting the above recommended solution down the sides of the vial. DO NOT VORTEX. Allow several minutes for complete reconstitution. For prolonged storage, dilute to working aliquots in a 0.1% BSA solution, store at -80°C and avoid repeat freeze thaws.

Expiration Date:                      
12 months from date of receipt when stored at -20°C to-80°C as supplied.
1 month when stored at 4°C after reconstituting as directed.
3 months when stored at -20°C to -80°C after reconstituting as directed.

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