SIRPA Protein (AA 31-370) (Fc Tag)

Catalog No. ABIN2181765

Product Details

Target: SIRPA (Signal-Regulatory Protein alpha (SIRPA))

Protein Type: Recombinant

Biological Activity: Active

Protein Characteristics: AA 31-370

Origin: Human

Source: HEK-293 Cells

Purification tag / Conjugate: This SIRPA protein is labelled with Fc Tag.

Sequence: AA 31-370

Characteristics: This protein carries a human IgG1 Fc tag at the C-terminus. The protein has a calculated MW of 63.5 kDa. The protein migrates as 70-105 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

Purity: >95 % as determined by SDS-PAGE.

Sterility: 0.22 μm filtered

Endotoxin Level: Less than 1.0 EU per μg by the LAL method.

Application Details

Restrictions: For Research Use only

Handling

Format: Lyophilized

Buffer: 50 mM Tris, 100 mM Glycine, pH 7.5

Handling Advice: Please avoid repeated freeze-thaw cycles.

Storage: -20 °C

Storage Comment: No activity loss was observed after storage at: In lyophilized state for 1 year (4 °C), After reconstitution under sterile conditions for 3 months (-70 °C).

References

Andrejeva, Capoccia, Hiebsch, Donio, Darwech, Puro, Pereira: "Novel SIRPα Antibodies That Induce Single-Agent Phagocytosis of Tumor Cells while Preserving T Cells." in: Journal of immunology (Baltimore, Md. : 1950), Vol. 206, Issue 4, pp. 712-721, (2021) (PubMed).

Wang, Ni, Zhou, He, Gao, Wu, Wu, Wu, Qiu, Zhou, Chen, Pan, Huang, Li, Bian, Yang, Miao, Liu: "Tumor-selective blockade of CD47 signaling with a CD47/PD-L1 bispecific antibody for enhanced anti-tumor activity and limited toxicity." in: Cancer immunology, immunotherapy : CII, (2020) (PubMed).

Yu, Qiu, Long, Yang, Zhang, Xu, Chang, Du, Hou, Yu, Zeng, Wang, Sun: "A novel fully human anti-CD47 antibody as a potential therapy for human neoplasms with good safety." in: Biochimie, Vol. 151, pp. 54-66, (2018) (PubMed).

Target Details

Target: SIRPA (Signal-Regulatory Protein alpha (SIRPA))

Alternative Name: SIRP alpha (SIRPA Products)

Background: Tyrosine-protein phosphatase non-receptor type substrate 1 (SHPS1) is also known as CD172 antigen-like family member A (CD172a), Macrophage fusion receptor, MyD-1 antigen, Signal-regulatory protein alpha (SIRPA or SIRP alpha) or p84, is a member of the SIRP family, and also belongs to the immunoglobulin superfamily. SIRP alpha is Ubiquitous and highly expressed in brain. SIRPA / CD172a is immunoglobulin-like cell surface receptor for CD47 and acts as docking protein and induces translocation of PTPN6, PTPN11 and other binding partners from the cytosol to the plasma membrane. SIRPA / SHPS-1 supports adhesion of cerebellar neurons, neurite outgrowth and glial cell attachment and may play a key role in intracellular signaling during synaptogenesis and in synaptic function By similarity. SIRPA / MyD1 involved in the negative regulation of receptor tyrosine kinase-coupled cellular responses induced by cell adhesion, growth factors or insulin and mediates negative regulation of phagocytosis, mast cell activation and dendritic cell activation. CD47 binding prevents maturation of immature dendritic cells and inhibits cytokine production by mature dendritic cells.

Molecular Weight: 63.9 kDa

NCBI Accession: NP_001035111