Recombinant human SDF1 alpha protein (Animal Free)
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Recombinant human SDF1 alpha protein (Animal Free) is a Human Full Length protein, in the 22 to 89 aa range, expressed in Escherichia coli, with >98%, suitable for SDS-PAGE, FuncS, HPLC.
View Alternative Names
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
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Reactivity data
Sequence info
Properties and storage information
Shipped at conditions
Appropriate short-term storage duration
Appropriate short-term storage conditions
Appropriate long-term storage conditions
Aliquoting information
Storage information
Supplementary information
This supplementary information is collated from multiple sources and compiled automatically.
Biological function summary
SDF1 alpha participates in regulating the movement and positioning of hematopoietic stem cells supporting tissue homeostasis and repair. It operates often by binding to the G-protein coupled receptor CXCR4. This interaction is especially important in hematopoiesis vasculogenesis and neuron guidance. Although SDF1 alpha does not function as part of a larger complex its interaction with CXCR4 plays an important role for processes like development and wound healing.
Pathways
SDF1 alpha is heavily involved in the chemokine signaling pathway which is pivotal for immune responses and cellular communication. Its interaction with CXCR4 also links it to the MAPK/ERK pathway contributing to cell proliferation differentiation and survival. These pathways highlight the essential interplay between SDF1 alpha and proteins such as CXCR4 and CCR7 which are part of broader cellular responses.
Specifications
Form
Lyophilized
Additional notes
> 98 % by HPLC.
General info
Function
Chemoattractant active on T-lymphocytes and monocytes but not neutrophils (PubMed : 18802065, PubMed : 39093700). Activates the C-X-C chemokine receptor CXCR4 to induce a rapid and transient rise in the level of intracellular calcium ions and chemotaxis (PubMed : 8752281, PubMed : 18802065, PubMed : 39093700). Also binds to atypical chemokine receptor ACKR3, which activates the beta-arrestin pathway and acts as a scavenger receptor for CXCL12/SDF-1 (PubMed : 16107333, PubMed : 19255243). 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 (PubMed : 18802065). 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 (PubMed : 16107333, PubMed : 18802065, PubMed : 19255243, PubMed : 39093700). CXCR4 signaling axis inhibits beta-2 integrin LFA-1 mediated adhesion of monocytes to ICAM-1 through LYN kinase (PubMed : 18802065). Inhibits CXCR4-mediated infection by T-cell line-adapted HIV-1 (PubMed : 8752281). 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 (By similarity). 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).. SDF-1-beta(3-72). Shows a reduced chemotactic activity.. SDF-1-alpha(3-67). Shows a reduced chemotactic activity (PubMed : 14525775). Binding to cell surface proteoglycans seems to inhibit formation of SDF-1-alpha(3-67) and thus to preserve activity on local sites (PubMed : 14525775).
Sequence similarities
Belongs to the intercrine alpha (chemokine CxC) family.
Post-translational modifications
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.
Target data
Product promise
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