SIRP alpha/CD172a Protein, Human (G75A, HEK293, His)

SIRP alpha V4/CD172a Protein, an immunoglobulin-like cell surface receptor for CD47, acts as a docking protein, facilitating the translocation of PTPN6, PTPN11, and other partners to the plasma membrane. It supports adhesion of cerebellar neurons, promotes neurite outgrowth, and facilitates glial cell attachment. Engaging in negative regulation, it modulates receptor tyrosine kinase-coupled responses, phagocytosis, mast cell activation, and dendritic cell activation. CD47 binding prevents dendritic cell maturation, inhibits cytokine production, and limits new world arenavirus infection. SIRP alpha V4/CD172a also participates in ROS signaling, interacting with THBS1 and various proteins. SIRP alpha/CD172a Protein, Human (G75A, HEK293, His) is the recombinant human-derived SIRP alpha/CD172a protein, expressed by HEK293 , with C-His labeled tag and G75A mutation. The total length of SIRP alpha/CD172a Protein, Human (G75A, HEK293, His) is 340 a.a., with molecular weight of 45-55 kDa.

SIRP alpha V4/CD172a Protein, an immunoglobulin-like cell surface receptor for CD47, acts as a docking protein that facilitates the translocation of PTPN6, PTPN11, and other binding partners from the cytosol to the plasma membrane. This receptor contributes to diverse cellular processes, including supporting the adhesion of cerebellar neurons, promoting neurite outgrowth, and facilitating glial cell attachment. With a potential role in intracellular signaling during synaptogenesis and synaptic function, SIRP alpha V4/CD172a also engages in negative regulation of receptor tyrosine kinase-coupled responses triggered by cell adhesion, growth factors, or insulin. Furthermore, it mediates the negative modulation of phagocytosis, mast cell activation, and dendritic cell activation. Notably, CD47 binding prevents the maturation of immature dendritic cells and inhibits cytokine production by mature dendritic cells. SIRP alpha V4/CD172a plays a significant role in antiviral immunity, limiting new world arenavirus infection by decreasing virus internalization. As a receptor for THBS1, it participates in ROS signaling in non-phagocytic cells upon interaction with THBS1, stimulating NADPH oxidase-derived ROS production. The receptor engages in various protein interactions, including binding to PTPN11, GRB2, FGR, JAK2, SCAP1, SCAP2, FYB1, PTK2B, and TRIM2.

Immobilized Recombinant Human CD47 Protein (ECD,Fc Tag) at 2 μg/mL (100 μL/well) can bind Recombinant Human SIRP alpha / CD172a Protein (ECD, His Tag), the EC₅₀ is 280-850 ng/mL.

Human

HEK293

C-His

P78324 (E31-R370, G75A)

140885  [NCBI]

EEELQVIQPDKSVLVAAGETATLRCTATSLIPVGPIQWFRGAGPARELIYNQKEGHFPRVTTVSDLTKRNNMDFSIRIGNITPADAGTYYCVKFRKGSPDDVEFKSGAGTELSVRAKPSAPVVSGPAARATPQHTVSFTCESHGFSPRDITLKWFKNGNELSDFQTNVDPVGESVSYSIHSTAKVVLTREDVHSQVICEVAHVTLQGDPLRGTANLSETIRVPPTLEVTQQPVRAENQVNVTCQVRKFYPQRLQLTWLENGNVSRTETASTVTENKDGTYNWMSWLLVNVSAHRDDVKLTCQVEHDGQPAVSKSHDLKVSAHPKEQGSNTAAENTGSNER

45-55 kDa

Greater than 95% as determined by reducing SDS-PAGE.

Solution

Supplied as a 0.2 μm filtered solution of PBS, pH 7.4.

<1 EU/μg, determined by LAL method.

N/A.

Stored at -80°C for 1 year. It is stable at -20°C for 3 months after opening. It is recommended to freeze aliquots at -80°C for extended storage. Avoid repeated freeze-thaw cycles.

Shipping with dry ice.