Recombinant human SDF1 alpha protein (ab73461)



  • NatureRecombinant
  • SourceEscherichia coli
  • Amino Acid Sequence
    • AccessionP48061-2
    • SpeciesHuman
    • SequenceThe sequence of the first five N-terminal amino acids was determined and was found to be Lys-Pro-Val-Ser-Leu
    • Amino acids22 to 89

Associated products


Our Abpromise guarantee covers the use of ab73461 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

  • Biological activity

    The specific activity as determined by its ability to chemoattract human peripheral T cells activated with PHA and IL-2 using a concentation of 20-80 ng/ml corresponding to a Specific Activity of 12,500-50,000IU/mg.

  • Applications

    Functional Studies

  • Purity> 95 % SDS-PAGE.
    This protein was purified by proprietary chromatographic techniques. Purity: Greater than 98.0% as determined by: (a) Analysis by RP-HPLC. (b) Analysis by SDS-PAGE.
  • FormLyophilised
  • Additional notesFor long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).
  • Concentration information loading...

Preparation and Storage

  • Stability and Storage

    Shipped at 4°C. Upon delivery aliquot. Store at -80°C. Avoid freeze / thaw cycle.

    Preservative: None
    No additives

    This product is an active protein and may elicit a biological response in vivo, handle with caution.

  • ReconstitutionReconstitute in sterile 18MOhm/cm water to not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

General Info

  • Alternative names
    • C-X-C motif chemokine 12
    • Chemokine (C-X-C motif) ligand 12
    • cxcl12
    • hIRH
    • hSDF-1
    • Intercrine reduced in hepatomas
    • IRH
    • PBSF
    • Pre-B cell growth-stimulating factor
    • SCYB12
    • SDF 1 alpha
    • SDF-1
    • SDF-1-alpha(3-67)
    • SDF1
    • SDF1_HUMAN
    • SDF1a
    • SDF1B
    • Stromal cell derived factor 1
    • TLSF
    • TPAR1
    see all
  • FunctionChemoattractant active on T-lymphocytes, monocytes, but not neutrophils. Activates the C-X-C chemokine receptor CXCR4 to induce a rapid and transient rise in the level of intracellular calcium ions and chemotaxis. SDF-1-beta(3-72) and SDF-1-alpha(3-67) show a reduced chemotactic activity. Binding to cell surface proteoglycans seems to inhibit formation of SDF-1-alpha(3-67) and thus to preserve activity on local sites. Acts as a positive regulator of monocyte migration and a negative regulator of monocyte adhesion via the Lyn kinase. Stimulates migration of monocytes through its receptor, CXCR4, and decreases monocyte adherence to surfaces coated with ICAM-1, a ligand for beta-2 integrins. SDF1A/CXCR4 signaling axis inhibits beta-2 integrin LFA-1 mediated adhesion of monocytes to ICAM-1 through Lyn kinase.
  • Sequence similaritiesBelongs to the intercrine alpha (chemokine CxC) family.
  • Post-translational
    Processed forms SDF-1-beta(3-72) and SDF-1-alpha(3-67) are produced after secretion by proteolytic cleavage of isoforms Beta and Alpha, respectively. The N-terminal processing is probably achieved by DPP4. Isoform Alpha is first cleaved at the C-terminus to yield a SDF-1-alpha(1-67) intermediate before being processsed at the N-terminus. The C-terminal processing of isoform Alpha is reduced by binding to heparin and, probably, cell surface proteoglycans.
  • Cellular localizationSecreted.
  • Information by UniProt

References for Recombinant human SDF1 alpha protein (ab73461)

ab73461 has not yet been referenced specifically in any publications.

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The SDF1 alpha protein, Ab73461, was tested in an activity assay byan outside laboratory, and unfortunately we do...

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