SDF-1 Recombinant Protein | CXCL12 recombinant protein

SDF-1 Protein, Human, Recombinant (isoform a, His Tag)

Cat. Num. AAA8121445

• Gene Names: CXCL12; IRH; PBSF; SDF1; TLSF; TPAR1; SCYB12
• Purity: >90% as determined by SDS-PAGE
• Synonyms: SDF-1; SDF-1 Protein; Human; Recombinant (isoform a; His Tag); Human CXCL12/SDF-1 Protein (isoform a; IRH Protein; PBSF Protein; SCYB12 Protein; SDF1 Protein; TLSF Protein; TPAR1 Protein; chemokine (C-X-C motif) ligand 12; CXCL12 recombinant protein

• Host: E Coli
• Purity/Purification: >90% as determined by SDS-PAGE
• Form/Format: Lyophilized from sterile PBS, pH7.4. Normally 5%-8% trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hard copy of CoA.
• Sequence: Lys22-Lys89

• Species: Human
• Predicted N Terminal: Met
• Tag: N-His
• Protein Construction: A DNA sequence encoding the human CXCL12 isoform alpha (P48061-2)(Lys 22-Lys 89) was expressed, with a polyhistidine tag at the N-terminus.
• Reconstitution: A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.
• Preparation and Storage: Samples are stable for up to twelve months from date of receipt at -20 degree C to -80 degree C. Store it under sterile conditions at -20 degree C to -80 degree C. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.; In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature. Bulk packages of recombinant proteins are provided as frozen liquid.; They are shipped out with blue ice.

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Related Product Information for CXCL12 recombinant protein

Background: The human stromal cell-derived factor-1 (SDF1), also known as CXCL12, is a small (8kDa) cytokine highly conserved chemotactic cytokine belonging to the large family of CXC chemokines. SDF1 is expressed in two isoforms from a single gene that encodes two splice variants, SDF1alpha and SDF1beta, which are identical except for the four residues present in the C-terminus of SDF1beta but absent from SDF1alpha. The chemokine CXCL12 [stromal cell-derived factor-1 (SDF-1)] binds primarily to CXC receptor 4 (CXCR4; CD184). The binding of CXCL12 to CXCR4 induces intracellular signaling through several divergent pathways initiating signals related to chemotaxis, cell survival and/or proliferation, increase in intracellular calcium, and gene transcription. CXCL12 and CXCR4 that have been widely characterized in peripheral tissues and delineate their main functions in the CNS. Extensive evidence supports CXCL12 as a key regulator for early development of the CNS. In the mature CNS, CXCL12 modulates neurotransmission, neurotoxicity and neuroglial interactions. CXCL12 has crucial roles in the formation of multiple organ systems during embryogenesis and in the regulation of bone marrow haematopoiesis and immune function in the postnatal organism. Although considered an important factor in normal bone metabolism, recent studies implicate CXCL12 in the pathogenesis of several diseases involving the skeleton, including rheumatoid arthritis and cancers that metastasize to bone. The CXCL12/CXCR4 axis is involved in tumor progression, angiogenesis, metastasis, and survival. Pathologically enhanced CXCL12 signaling may promote the formation of new vessels through recruiting circulating endothelial progenitor cells or directly enhancing the migration/growth of endothelial cells. Therefore, CXCL12 signaling represents an important mechanism that regulates brain tumor angiogenesis/vasculogenesis and may provide potential targets for anti-angiogenic therapy in malignant gliomas.

Product Categories/Family for CXCL12 recombinant protein

Neuroinflammation

References

Bleul, C.C. et al., 1996, Nature. 382: 829-833. Sapede, D. et al., 2005, Proc. Natl. Acad. Sci. USA. 102: 1714-1718. Delgado, M.B. et al., 2001, Eur. J. Immunol. 31: 699-707. Orimo, A. et al., 2005, Cell. 121: 335-348. Kryczek, I. et al., 2007, Am. J. Physiol. Cell. Physiol. 292: C987-995. Bbalabanian, K. et al., 2005, J. Biol. Chem. 280: 35760-35766.

NCBI and Uniprot Product Information

• NCBI GI #: 76563933
• NCBI GeneID: 6387
• NCBI Accession #: NP_001029058.1
• NCBI GenBank Nucleotide #: NM_001033886.2
• UniProt Accession #: P48061; Q2L985; Q2L986; Q2L988; Q5IT36; Q6ICW0; Q9H554; B2R4G0; E7EVL0; H7BYN8
• Molecular Weight: 10,666 Da
• NCBI Official Full Name: stromal cell-derived factor 1 isoform gamma
• NCBI Official Synonym Full Names: chemokine (C-X-C motif) ligand 12
• NCBI Official Symbol: CXCL12
• NCBI Official Synonym Symbols: IRH; PBSF; SDF1; TLSF; TPAR1; SCYB12
• NCBI Protein Information: stromal cell-derived factor 1; intercrine reduced in hepatomas; pre-B cell growth-stimulating factor
• UniProt Protein Name: Stromal cell-derived factor 1
• Protein Family: Stromal cell-derived factor
• UniProt Gene Name: CXCL12
• UniProt Synonym Gene Names: SDF1; SDF1A; SDF1B; SDF-1; hSDF-1; IRH; hIRH; PBSF
• UniProt Entry Name: SDF1_HUMAN

NCBI Description

This gene encodes a stromal cell-derived alpha chemokine member of the intercrine family. The encoded protein functions as the ligand for the G-protein coupled receptor, chemokine (C-X-C motif) receptor 4, and plays a role in many diverse cellular functions, including embryogenesis, immune surveillance, inflammation response, tissue homeostasis, and tumor growth and metastasis. Mutations in this gene are associated with resistance to human immunodeficiency virus type 1 infections. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2013]

Uniprot Description

CXCL12: 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 another C-X-C chemokine receptor CXCR7, which activates the beta-arrestin pathway and acts as a scavenger receptor for SDF-1. 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 and T-lymphocytes through its receptors, CXCR4 and CXCR7, 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. Inhibits CXCR4-mediated infection by T- cell line-adapted HIV-1. Plays a protective role after myocardial infarction. Induces down-regulation and internalization of CXCR7 expressed in various cells. Has several critical functions during embryonic development; required for B-cell lymphopoiesis, myelopoiesis in bone marrow and heart ventricular septum formation. 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 CXCR7. Isoform Alpha and isoform Beta are ubiquitously expressed, with highest levels detected in liver, pancreas and spleen. Isoform Gamma is mainly expressed in heart, with weak expression detected in several other tissues. Isoform Delta, isoform Epsilon and isoform Theta have highest expression levels in pancreas, with lower levels detected in heart, kidney, liver and spleen. Belongs to the intercrine alpha (chemokine CxC) family. 6 isoforms of the human protein are produced by alternative splicing.

Protein type: Secreted; Cell development/differentiation; Motility/polarity/chemotaxis; Chemokine; Secreted, signal peptide

Chromosomal Location of Human Ortholog: 10q11.1

Cellular Component: extracellular space; extracellular region; external side of plasma membrane

Molecular Function: growth factor activity; chemokine receptor binding; chemokine activity; CXCR chemokine receptor binding; receptor binding

Biological Process: response to peptide hormone stimulus; positive regulation of dopamine secretion; positive regulation of cell adhesion; adult locomotory behavior; blood circulation; neuron migration; motor axon guidance; chemotaxis; signal transduction; induction of positive chemotaxis; germ cell development; T cell proliferation; response to radiation; germ cell migration; cell adhesion; organ regeneration; regulation of actin polymerization and/or depolymerization; response to virus; patterning of blood vessels; cellular calcium ion homeostasis; G-protein coupled receptor protein signaling pathway; response to mechanical stimulus; response to heat; ameboidal cell migration; response to hypoxia; positive regulation of axon extension involved in axon guidance; immune response; positive regulation of endothelial cell proliferation; telencephalon cell migration

Disease: Human Immunodeficiency Virus Type 1, Susceptibility To