Recombinant human SDF1 protein (Active) is a Human Full Length protein, in the 22 to 89 aa range, expressed in Escherichia coli, with >=98% purity, < 1 EU/µg endotoxin level and suitable for SDS-PAGE, FuncS, HPLC.
K P V S L S Y R C P C R F F E S H V A R A N V K H L K I L N T P N C A L Q I V A R L K N N N R Q V C I D P K L K W I Q E Y L E K A L N K
| Application | Reactivity | Dilution info | Notes |
|---|---|---|---|
Application SDS-PAGE | Reactivity Reacts | Dilution info - | Notes - |
Application FuncS | Reactivity Reacts | Dilution info - | Notes - |
Application HPLC | Reactivity Reacts | Dilution info - | Notes - |
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Chemoattractant active on T-lymphocytes and 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. Also binds to atypical chemokine receptor ACKR3, which activates the beta-arrestin pathway and acts as a scavenger receptor for SDF-1. Binds to the allosteric site (site 2) of integrins and activates integrins ITGAV:ITGB3, ITGA4:ITGB1 and ITGA5:ITGB1 in a CXCR4-independent manner (PubMed:29301984). 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. Inhibits CXCR4-mediated infection by T-cell line-adapted HIV-1. Plays a protective role after myocardial infarction. Induces down-regulation and internalization of ACKR3 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. Stimulates the proliferation of bone marrow-derived B-cell progenitors in the presence of IL7 as well as growth of stromal cell-dependent pre-B-cells (By similarity).
SDF1, SDF1A, SDF1B, CXCL12, Stromal cell-derived factor 1, SDF-1, hSDF-1, C-X-C motif chemokine 12, Intercrine reduced in hepatomas, Pre-B cell growth-stimulating factor, IRH, hIRH, PBSF
Recombinant human SDF1 protein (Active) is a Human Full Length protein, in the 22 to 89 aa range, expressed in Escherichia coli, with >=98% purity, < 1 EU/µg endotoxin level and suitable for SDS-PAGE, FuncS, HPLC.
>= HPLC analyses.Sterile filtered.
Chemoattractant active on T-lymphocytes and 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. Also binds to atypical chemokine receptor ACKR3, which activates the beta-arrestin pathway and acts as a scavenger receptor for SDF-1. Binds to the allosteric site (site 2) of integrins and activates integrins ITGAV:ITGB3, ITGA4:ITGB1 and ITGA5:ITGB1 in a CXCR4-independent manner (PubMed:29301984). 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. Inhibits CXCR4-mediated infection by T-cell line-adapted HIV-1. Plays a protective role after myocardial infarction. Induces down-regulation and internalization of ACKR3 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. Stimulates the proliferation of bone marrow-derived B-cell progenitors in the presence of IL7 as well as growth of stromal cell-dependent pre-B-cells (By similarity).
Belongs to the intercrine alpha (chemokine CxC) family.
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 processed at the N-terminus. The C-terminal processing of isoform Alpha is reduced by binding to heparin and, probably, cell surface proteoglycans.
This product is an active protein and may elicit a biological response in vivo, handle with caution.
The stromal cell-derived factor 1 (SDF1) also known as C-X-C motif chemokine 12 (CXCL12) is a chemokine protein that is important in immunological responses and cellular signaling. This protein weighs approximately 8 kDa. SDF1 is largely expressed in bone marrow stroma liver and endothelium of various tissues positioning it as an integral player in cell migration and homing processes. The protein functions as a chemoattractant for lymphocytes promoting cellular trafficking and organ development.
SDF1 influences the migration and survival of hematopoietic progenitor cells. It plays a pivotal role in heart development angiogenesis and neuronal protein regulation. SDF1 binds with high affinity to its receptor CXCR4 forming a critical signal transduction complex that modulates cellular movement and growth responses. This interaction is important in the regulation of cell positioning and potential pathways of pathological changes.
SDF1 has an important role in the chemokine signaling pathway and is involved in the pathways controlling hematopoietic stem cell migration and homing. The interaction between SDF1 and CXCR4 triggers downstream signaling events engaging proteins like PI3K and MAPK which promote cell survival and proliferation. Furthermore the SDF1/CXCR4 axis is central to the vascular endothelial growth factor (VEGF) pathway facilitating angiogenesis and tissue repair mechanisms.
SDF1 relates closely to cancer metastasis and HIV infection. The SDF1/CXCR4 interaction acts as a co-receptor for HIV entry into host cells implicating it in viral pathogenesis. Overexpression of SDF1 and its binding partner CXCR4 contributes to tumor growth invasion and metastasis in various cancers by promoting angiogenesis and tumor cell migration. The targeting of the SDF1/CXCR4 axis holds therapeutic potential in cancer treatment and infectious disease management.
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