Technical Data
Stromal Cell Derived Factor 1 alpha, Recombinant, Mouse (SDF1 alpha, SDF1a, SDF-1a, Chemokine (C-X-C Motif) Ligand 12, CXCL12, hIRH, Pre-B cell Growth-stimulating Factor, PBSF, SCYB12, TLSF-a, TPAR1)
Molecular Biology Storage: -20CShipping: RT
Recombinant murine SDF1a is a non-glycosylated, polypeptide chain containing 68 amino acids, Mr 7.9kD.

Chemokine SDF-1 is highly conserved among species and belongs to a large family of small, structurally related cytokines. It is a chemoattractant for T lymphocytes, monocytes, and hemopoietic stem cells and is constitutively expressed in bone-marrow-derived stromal cells. Recent reports indicate that SDF-1 is the ligand for LESTR/fusin and prevents infection by T-cell-line-adapted HIV-1. SDF-1a and SDF-1b, are generated by alternative RNA splicing of transcripts encoded by a single gene. SDF-1a differs from SDF-1b by four C-terminal amino acid residues absent in SDF-1a. As yet, no functional differences have been reported.

The sequence of the first five N-terminal amino acids was determined and was found to be Lys-Pro-Val-Ser-Leu.

Biological Activity:
SDF1a is fully biologically active when compared to standard. The specific activity was determined by its ability to chemoattract human peripheral blood monocytes at 50-100ng/ml.

Storage and Stability:
Lyophilized powder may be stored at 4C for short-term only. Reconstitute to
100ug/ml by adding sterile dH2O and store at -20C. Reconstituted product is stable for 6 months at -20C. For maximum recovery of product, centrifuge the original vial prior to removing the cap. Further dilutions can be made in assay buffer.

Molecular Weight:
Source: E. coli
Purity: 98% by RP-HPLC, FPLC, or reducing/non-reducing SDS-PAGE Silver Stain. Endotoxin: 0.1ng/ug (IEU/ug).
Form: Supplied as a lyophilized powder in 10mM acetic acid (AcOH). Reconstitute in sterile ddH2O to 0.1mg/ml.

Important Note: This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.
1. Matsuda-Hashii, Y., et al., Exp. Hematol. 32(10): 955-961 (2004). 2. Sadir, R., et al., J. Biol. Chem. 279(42): 43,854-43,860 (2004). 3. De Falco, E., et al., Blood 104(12): 3472-3482 (2004). 4. Stebler, J., et al., Dev. Biol. 272(2): 351-361 (2004). 5. Ceradini, D.J., et al., Nat. Med. 10(8): 858-864 (2004). 6. Xiang, J., et al., Lancet 363(9426): 2040-2046 (2004).

Intended for research use only. Not for use in human, therapeutic, or diagnostic applications.