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Recombinant Human SIRPalpha/SIRPA protein (His tag)
SKU: PDEH100330-100
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Recombinant Human SIRPalpha/SIRPA protein (His tag)
| SKU # | PDEH100330 |
| Expression Host | E. coli |
Description
| Synonyms | Tyrosine-Protein Phosphatase Non-Receptor Type Substrate 1;SHP Substrate 1;SHPS-1;Brain Ig-Like Molecule with Tyrosine-Based Activation Motifs;Bit;CD172 Antigen-Like Family Member A;Inhibitory Feceptor SHPS-1;Macrophage Fusion Receptor;MyD-1 Antig |
| Species | Human |
| Expression_host | E.coli |
| Sequence | Glu 31-Tyr 373 |
| Accession | P78324-2 |
| Mol_Mass | 37.6 kDa |
| AP_Mol_Mass | 41 kDa |
| Tag | N-His & C-His |
| Bio_Activity | Not validated for activity |
Propertie
| Purity | > 95 % as determined by reducing SDS-PAGE. |
| Endotoxin level | Please contact us for more information. |
| Storage | Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months. |
| Shipping | This product is provided as lyophilized powder which is shipped with ice packs. |
| Formulation | Lyophilized from sterile PBS, pH 7.4. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the printed manual. |
| Reconstitution | It is recommended that sterile water be added to the vial to prepare a stock solution of 0.5 mg/mL. Concentration is measured by UV-Vis |
Background
Signal Regulatory Protein α (SIRPα) is a monomeric approximately 90 kD type I transmembrane glycoprotein. The 504 amino acid human SIRPα contains two Ig-like C1-type domains and one Ig-like V-type domain. SIRPα can express in various tissues, mainly on brain and myeloid cells, including macrophages, neutrophils, dendritic and Langerhans cells. It also can detect in neurons, smooth muscle and endothelial cells. SIRPA is an immunoglobulin-like cell surface receptor for CD47. SIRPα acts as docking protein and induces translocation of PTPN6, PTPN11 and other binding partners from the cytosol to the plasma membrane. SIRPα shows adhesion of cerebellar neurons, neurite outgrowth and glial cell attachment. SIRPα engagement generally produces a negative regulatory signal; it may mediate negative regulation of phagocytosis, mast cell activation and dendritic cell activation.