SDF-1 alpha and beta are stromal derived CXC chemokines, and signal through the CXCR4 receptor. SDF-1alpha and beta chemoattract B and T cells, and have been shown to induce migration of CD34+ stem cells. Additionally, the SDF-1 proteins exert HIV suppressive activity in cells expressing the CXCR4 receptor. Recombinant human SDF-1beta is an 8.5 kDa protein containing 72 amino acid residues.
Catalog #:
300-28B
Source :
E.coli
Purity :
Greater than 98% by SDS-PAGE gel and HPLC analyses.
Endotoxin Level :
Endotoxin level is less than 0.1 ng per µg (1EU/µg).
Biological Activity :
Determined by its ability to chemoattract human peripheral T cells activated with PHA and IL-2 using a concentration range of 20-80 ng/ml.