SDF-1α and β are stromal-derived, CXC chemokines that signal through the CXCR4 receptor. SDF-1α and β 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. Human and murine SDF-1 proteins act across species. SDF-1α and β contain the four highly conserved cysteine residues present in CXC chemokines. The mature SDF-1β protein, produced by an N-terminal truncation of two additional amino acids, after removal of the signal sequence, contains 72 amino acid residues. Recombinant Rat SDF-1β is an 8.4 kDa protein containing 72 amino acid residues.
Source: E.coli
Synonyms: Stromal-Cell Derived Factor-1, CXCL12, PBSF
AA Sequence: KPVSLSYRCP CRFFESHVAR ANVKHLKILN TPNCALQIVA RLKSNNRQVC IDPKLKWIQE YLDKALNKRL KM
Purity: ≥ 95% by SDS-PAGE gel and HPLC analyses.
Biological Activity: Determined by its ability to chemoattract human monocytes using a concentration range of 100.0-200.0 ng/ml.
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