SIRP alpha/CD172a Protein, Cynomolgus (HEK293, Fc)

The SIRP α/CD172a protein is an immunoglobulin-like cell surface receptor for CD47 and is essential for the translocation of binding partners to the plasma membrane. It plays a key role in a variety of cellular processes, supporting the adhesion of cerebellar neurons, promoting neurite outgrowth, and promoting glial cell attachment. SIRP alpha/CD172a Protein, Cynomolgus (HEK293, Fc) is the recombinant cynomolgus-derived SIRP alpha/CD172a protein, expressed by HEK293 , with C-hFc labeled tag. The total length of SIRP alpha/CD172a Protein, Cynomolgus (HEK293, Fc) is 340 a.a., with molecular weight of 70-85 kDa.

SIRP alpha/CD172a Protein functions as an immunoglobulin-like cell surface receptor for CD47, facilitating the translocation of PTPN6, PTPN11, and other binding partners from the cytosol to the plasma membrane. This receptor plays a crucial role in various cellular processes, including supporting adhesion of cerebellar neurons, promoting neurite outgrowth, and facilitating glial cell attachment. Additionally, SIRP alpha/CD172a is implicated in intracellular signaling during synaptogenesis and synaptic function. Its negative regulatory role extends to receptor tyrosine kinase-coupled responses induced by cell adhesion, growth factors, or insulin. Furthermore, SIRP alpha/CD172a participates in the negative modulation of phagocytosis, mast cell activation, and dendritic cell activation, with CD47 binding preventing dendritic cell maturation and inhibiting cytokine production. Notably, it contributes to antiviral immunity by limiting new world arenavirus infection, specifically by decreasing virus internalization. The receptor also interacts with THBS1, participating in ROS signaling in non-phagocytic cells and stimulating NADPH oxidase-derived ROS production. SIRP alpha/CD172a engages in diverse protein interactions, including binding to PTPN11, GRB2, FGR, JAK2, SCAP1, SCAP2, FYB1, PTK2B, and TRIM2.

Immobilized Cynomolgus / Rhesus macaque CD47 His at 2 μg/mL (100 μL/well) can bind Cynomolgus SIRP alpha Fc with a linear range of 0.01-0.3 μg/mL.

Cynomolgus

HEK293

C-hFc

NP_001271679 (E31-N370)

101926317  [NCBI]

EEELQVIQPEKSVSVAAGDSATLNCTVTSLIPVGPIQWFRGAGPGRELIYNLKEGHFPRVTPVSDPTKRNNMDFSIHISNITPADAGTYYCVKFRKGSPDVEVKSGAGTELSVRAKPSAPVVSGPAVRATAEHTVSFTCESHGFSPRDITLKWFKNGNELSDFQTNVDPAGKSVSYSIRSTARVVLTRRDVHSQVICEVAHVTLQGDPLRGTANLSEAIRVPPFLEVTQQSMRADNQVNVTCQVTKFYPQRLQLTWLENGNVSRTEMASALPENKDGTYNWTSWLLVNVSAHRDDVKLTCQVEHDGQPAVNKSFSVKVSAHPKEQGSNTAAENTGTNERN

70-85 kDa

≥ 95%, as determined by reducing SDS-PAGE.

Lyophilized powder.

Lyophilized a 0.22 μm filtered solution of Tris with Glycine, Arginine and NaCl, pH 7.5. Normally trehalose is added as protectant before lyophilization.
Note: For SPR assay, please replace the buffer. Primary amine components (e.g., Tris, imidazole) can affect protein-coupled chips.

<1 EU/μg, determined by LAL method.

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH₂O. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).

Stored at -20°C for 2 years from date of receipt. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Room temperature in continental US; may vary elsewhere.