SIRP alpha (Signal Regulatory Protein alpha, SIRPalpha, SIRPA, SIRP, Signal-regulatory Protein alpha-1, Sirp-alpha-1, Signal-regulatory Protein alpha-2, Sirp-alpha-2, Signal-regulatory Protein alpha-3, Sirp-alpha-3, Brain Ig-like Molecule with Tyrosine-ba

SHPS-1 (also known as P84, BIT, and SIRP) is a neuronal membrane glycoprotein that promotes the attachment and neurite outgrowth of cultured murine cerebellar cells. Because of its heterophilic adhesive properties and its localization at synaptogenesis sites, SHPS-1 is suggested play a role in the regulation of synapse formation or maintenance. As a member of a phosphatase binding protein family, SHPS-1 shares identical homology with murine SHPS-1 cDNA. It is involved in receptor tyrosine kinase signaling that is found at synapses in the mammalian central nervous system and in non-neural tissues. It is reported that integrin-associated protein (IAP/CD47) is a predominant binding partner for P84. Upon phosphorylation of its cytoplasmic region, SHPS-1 binds to the protein-tyrosine phosphatase SHPS-2. Formation of the SHPS-1-SHP-2 complex is also implicated in the regulation of cellular migration. SHPS-1 and its ligand CD47 constitute an intercellular recognition system that contributes to the inhibition of cell migration via cell-cell contact. The ectodomain of SHPS-1 is shown to be excised from cells in a reaction that is likely mediated by a metalloproteinase. It is demonstrated that forced expression of a SHPS-1 mutant resistant to ectodomain shedding impaires cell migration, cell spreading, actin cytoskeleton reorganization, and paxillin- and FAK- tyrosine phosphorylation.\n\nApplications:\nSuitable for use in Western Blot, Immunohistochemistry and Immunocytochemistry. Other applications not tested.\n\nRecommended Dilution:\nWestern Blot: 1:1000\nOptimal dilutions to be determined by the researcher.\n\nPositive Control:\nMouse brain tissue lysate\n\nStorage and Stability:\nMay be stored at 4 degrees C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Aliquots are stable for at least 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.

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SPECIFICATIONS

Catalog Number

029609

Size

100ul

Applications

ICC, IHC, WB

Hosts

Rat

Reactivities

Mouse

Form

Supplied as a liquid in 0.1M Tris-glycine, pH 7.4, 150mM sodium chloride, 0.05% sodium azide.

P Type

Mab

Purity

Purified by Protein G affinity chromatography.

Isotype

IgG1,k

References

1. Chuang, W., et al. (1990). Developmental Biology. 137(2):219-232. 2. Jiang, P., et al. (1999). J Biol Chem. 274(2): 559-562. 3. Comu, S., et al. (1997). J Neurosci. 17(22): 8702-8710. 4. Ohnishi, H., et al. (2004). J Biol Chem. 279(27):27878-27887.

Additional Info

Recognizes mouse SHPS-1.