Human Signal Regulatory Protein Alpha (SIRPa) Protein
195€ (10 µg)
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935106861
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name
Human Signal Regulatory Protein Alpha (SIRPa) Protein
category
Proteins and Peptides
provider
Abbexa
reference
abx165971
tested applications
WB, SDS-PAGE
Description
Signal Regulatory Protein Alpha is a recombinant Human protein expressed in E. coli.
Documents del producto
Instrucciones
Data sheet
Product specifications
| Category | Proteins and Peptides |
| Immunogen Target | Signal Regulatory Protein Alpha (SIRPa) |
| Host | E. coli |
| Origin | Human |
| Conjugation | Unconjugated |
| Observed MW | Molecular Weight: Calculated MW: 27.9 kDa Observed MW (SDS-PAGE): 28 kDa Concentration: Prior to lyophilization: 200 µg/ml Sequence Fragment: Ser105-Arg324 Tag: N-terminal His tag |
| Expression | Recombinant |
| Purity | > 95% |
| Size 1 | 10 µg |
| Size 2 | 50 µg |
| Size 3 | 100 µg |
| Size 4 | 200 µg |
| Size 5 | 500 µg |
| Form | Lyophilized To keep the original salt concentration, we recommend reconstituting to the original concentration prior to lyophilization (see Concentration) in ddH2O. If a lower concentration is required, dilute in PBS, pH 7.4. If a higher concentration is required, the product can be reconstituted directly in PBS, pH 7.4, though please note that this will change the overall salt concentration. The stock concentration should be between 0.1-1.0 mg/ml. Do not vortex. |
| Tested Applications | WB, SDS-PAGE |
| Buffer | Prior to lyophilization: PBS, pH 7.4, containing 0.01% Sarcosyl, 1 mM DTT, 5% Trehalose and Proclin-300. |
| Availability | Shipped within 5-7 working days. |
| Storage | Store at 2-8 °C for up to one month. Store at -80 °C for up to one year. Avoid repeated freeze/thaw cycles. |
| Dry Ice | No |
| UniProt ID | P78324 |
| Alias | Tyrosine-protein phosphatase non-receptor type substrate 1,BIT,MFR,P84,SIRP,MYD-1,SHPS1,CD172A,PTPNS1,SHP substrate 1,SHPS-1,Brain Ig-like molecule with tyrosine-based activation motifs,Inhibitory receptor SHPS-1,Macrophage fusion receptor,MyD-1 antigen |
| Background | Protein SIRPA |
| Status | RUO |
| Note | This product is for research use only. Not for human consumption, cosmetic, therapeutic or diagnostic use. |
Descripción
Signal regulatory protein alpha (SIRPA) is a transmembrane glycoprotein encoded by the SIRPA gene in humans, primarily expressed on myeloid cells such as macrophages, dendritic cells, and neutrophils, and to a lesser extent on neurons. SIRPA belongs to the immunoglobulin superfamily (IgSF) and functions as an inhibitory receptor, playing a critical role in immune homeostasis, cellular signaling, and cell-cell interactions. SIRPA interacts primarily with CD47, a widely expressed protein known as the “don’t eat me” signal on host cells. This interaction is fundamental for immune surveillance, as it prevents macrophages and other immune cells from targeting healthy self-cells for phagocytosis, thereby maintaining tolerance to self while supporting immune responses against foreign antigens and damaged cells. SIRPA is integral in modulating immune responses and is implicated in a range of physiological processes, including cell migration, cell adhesion, and tissue homeostasis. Research indicates that SIRPA is not only crucial in the innate immune system but also impacts adaptive immunity. Dysregulation or mutations of SIRPA have been linked to autoimmunity, cancer, and other pathologies due to its role in immune evasion, particularly in the context of cancer, where many tumor cells upregulate CD47 to escape immune clearance.
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