SDF-1 beta (CXCL12) active protein
Mouse SDF-1 beta (CXCL12)
NCBI and Uniprot Product Information
NCBI Description
This gene encodes a member of the alpha chemokine protein family. The encoded protein is secreted and functions as the ligand for the G-protein coupled receptor, chemokine (C-X-C motif) receptor 4. The encoded protein plays a role in many diverse cellular functions, including embryogenesis, immune surveillance, inflammation response, tissue homeostasis, and tumor growth and metastasis. Alternative splicing results in multiple transcript variants. [provided by RefSeq, May 2013]
Uniprot Description
Function: Chemoattractant 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. Also binds to atypical chemokine receptor ACKR3, which activates the beta-arrestin pathway and acts as a scavenger receptor for SDF-1. Acts as a positive regulator of monocyte migration and a negative regulator of monocyte adhesion via the LYN kinase. Stimulates migration of monocytes and T-lymphocytes through its receptors, CXCR4 and ACKR3, 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. Plays a protective role after myocardial infarction. Induces down-regulation and internalization of ACKR3 expressed in various cells
By similarity. Has several critical functions during embryonic development; required for B-cell lymphopoiesis, myelopoiesis in bone marrow and heart ventricular septum formation. Ref.3 Ref.9Stimulates the proliferation of bone marrow-derived b progenitor cells in the presence of IL-7 as well as growth of the stromal cell-dependent B-cell clone DW34 cells. Ref.3 Ref.9
Subunit structure: Monomer or homodimer; in equilibrium. Dimer formation is induced by non acidic pH and the presence of multivalent anions, and by binding to CXCR4 or heparin. Monomeric form is required for full chemotactic activity and resistance to ischemia/reperfusion injury, whereas the dimeric form acts as a partial agonist of CXCR4, stimulating Ca2+ mobilization but with no chemotactic activity and instead acts as a selective antagonist that blocks chemotaxis induced by the monomeric form. Interacts with the N-terminus of ACKR3
By similarity.
Subcellular location: Secreted.
Tissue specificity: Highest expression levels detected in kidney, liver, spleen and muscle. Isoform Alpha is expressed ubiquitously but at varying levels, while isoform Beta displays tissue-specific expression, with expression detected in kidney, liver, heart, spleen and muscle but not in lung, colon, brain, skin and stomach. Ref.2
Induction: Down-regulated by 12-O-tetradecanoylphorbol 13-acetate (TPA), with 5-fold decrease in expression levels at 1 hour after TPA treatment, 12-fold decrease at 4 hours, undetectable levels after 8 hours and low-level expression returning at 24 hours after treatment. Down-regulated by serum stimulation, with expression levels reaching their minimum at 4 hours after stimulation and returning back to normal levels at 16 hours after stimulation. Ref.2
Disruption phenotype: Half of the embryos die by E18.5 and neonates die within an hour. Mutants display defective B-lymphopoiesis, defective myelopoiesis in the bone marrow but not in the liver, and defective formation of the heart ventricular septum. Ref.9
Sequence similarities: Belongs to the intercrine alpha (chemokine CxC) family.
Research Articles on SDF-1 beta (CXCL12)
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Product Notes
The SDF-1 beta (CXCL12) cxcl12 (Catalog #AAA691879) is an Active Protein produced from E Coli and is intended for research purposes only. The product is available for immediate purchase. The Mouse SDF-1 beta (CXCL12) reacts with Mouse and may cross-react with other species as described in the data sheet. The amino acid sequence is listed below: KPVSLSYRCP CRFFESHIAR ANVKHLKILN TPNCALQIVA RLKNNN RQVC IDPKLKWIQE YLEKALNKRL KM. It is sometimes possible for the material contained within the vial of "SDF-1 beta (CXCL12), Active Protein" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.Precautions
All products in the AAA Biotech catalog are strictly for research-use only, and are absolutely not suitable for use in any sort of medical, therapeutic, prophylactic, in-vivo, or diagnostic capacity. By purchasing a product from AAA Biotech, you are explicitly certifying that said products will be properly tested and used in line with industry standard. AAA Biotech and its authorized distribution partners reserve the right to refuse to fulfill any order if we have any indication that a purchaser may be intending to use a product outside of our accepted criteria.Disclaimer
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