SDF1 beta Protein

Catalog No. ABIN988231

Product Details

Target: SDF1 beta (SDF1b) (Stromal Cell Derived Factor 1 beta (SDF1b))

Biological Activity: Active

Origin: Mouse

Source: Escherichia coli (E. coli)

Sequence: KPVSLSYRCP CRFFESHIAR ANVKHLKILN TPNCALQIVA RLKNNNRQVC IDPKLKWIQE YLEKALNKRL K

Characteristics: Fully biologically active when compared to standard. The ED50 determined by a chemotaxis bioassay using human peripheral blood T-lymphocytes is less than 30 ng/ml, corresponding to a specific activity of >, 3.3 × 104 IU/mg.

Purity: > 97 % by SDS-PAGE and HPLC analyses.

Endotoxin Level: Level Less than 1EU/µg of rMu SDF-1 beta /CXCL12 as determined by LAL method

Application Details

Restrictions: For Research Use only

Handling

Format: Lyophilized

Reconstitution: We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at < -20 °C. Further dilutions should be made in appropriate buffered solutions.

Storage: 4 °C

Target Details

Target: SDF1 beta (SDF1b) (Stromal Cell Derived Factor 1 beta (SDF1b))

Alternative Name: SDF-1 beta/cxcl12 (SDF1b Products)

Synonyms: Pbsf Protein, Scyb12 Protein, Sdf1 Protein, Tlsf Protein, Tpar1 Protein, sdf1a Protein, SDF-1 Protein, chemokine (C-X-C motif) ligand 12 Protein, C-X-C motif chemokine ligand 12 Protein, Cxcl12 Protein, cxcl12 Protein, CXCL12 Protein

Background: SDF-1ª and SDF-1beta, members of the chemokine ª subfamily that lack the ELR domain, were initially identified using the signal sequence trap cloning strategy from a mouse bone-marrow stromal cell line. These proteins were subsequently also cloned from a human stromal cell line as cytokines that supported the proliferation of a stromal cell-dependent pre-B-cell line. SDF-1ª and SDF-1beta cDNAs encode precursor proteins of 89 and 93 amino acid residues, respectively. Both SDF-1ª and SDF-1beta are encoded by a single gene and arise by alternative splicing. The two proteins are identical except for the four amino acid residues that are present in the carboxy-terminus of SDF-1beta and absent from SDF-1ª. SDF-1/PBSF is highly conserved between species, with only one amino acid substitution between the mature human and mouse proteins. SDF-1/PBSF acts via the chemokine receptor CXCR4 and has been shown to be a chemoattractant for T-lymphocytes, monocytes, pro- and pre- B cells, but not neutrophils. Mice lacking SDF-1 or CXCR4 have been found to have impaired B-lymphopoiesis, myelopoiesis, vascular development, cardiogenesis and abnormal neuronal cell migration and patterning in the central nervous system . Synonym: SDF-1 beta/CXCL12, Mouse. Formulation: Lyophilized from a 0.2µm filtered concentrated solution in 20mM PB, pH 7.4, 150mM NaCl.

Molecular Weight: 8.5 kDa, a single non-glycosylated polypeptide chain containing 72 amino acids.