Recombinant Human SIRPalpha/SIRPA protein (His tag)

Specifications

Catalog number

PDEH100984-01

Size / count

20 µg

Dry ice

No

Hazardous

No

Discontinued

No

Background

Signal Regulatory Protein α (SIRPα) is a monomeric approximately 90 kD type I transmembrane glycoprotein. The 504 amino acid human SIRPα contains two Ig-like C1-type domains and one Ig-like V-type domain. SIRPα can express in various tissues, mainly on brain and myeloid cells, including macrophages, neutrophils, dendritic and Langerhans cells. It also can detect in neurons, smooth muscle and endothelial cells. SIRPA is an immunoglobulin-like cell surface receptor for CD47. SIRPα acts as docking protein and induces translocation of PTPN6, PTPN11 and other binding partners from the cytosol to the plasma membrane. SIRPα shows adhesion of cerebellar neurons, neurite outgrowth and glial cell attachment. SIRPα engagement generally produces a negative regulatory signal, it may mediate negative regulation of phagocytosis, mast cell activation and dendritic cell activation.

Abbreviation

SIRPalpha; SIRPA

Synonyms

Bit; Brain Ig-Like Molecule with Tyrosine-Based Activation Motifs; CD172 Antigen-Like Family Member A; Inhibitory Feceptor SHPS-1; Macrophage Fusion Receptor; MyD-1 Antig; SHP Substrate 1; SHPS-1; Tyrosine-Protein Phosphatase Non-Receptor Type Substrate 1

UniProt

P78324

Accession Number

P78324-2

Expression System

E.coli

Tag

N-His & C-His

Sequence

Glu 31-Tyr 373

Field of Research

Cardiovascular; Neuroscience; Immunology; signal Transduction

Endotoxin

< 10 EU/mg of the protein as determined by the LAL method.

Purity

> 95% as determined by reducing SDS-PAGE.

Bioactivity

Not validated for activity

Reconstitution

It is recommended that sterile water be added to the vial to prepare a stock solution of 0.5 mg/mL. Concentration is measured by UV-Vis.

Shipping Conditions

This product is provided as lyophilized powder which is shipped with ice packs.

Storage Conditions

Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80°C. Reconstituted protein solution can be stored at 4-8°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.

Calculated Molecular Weight

37.6 kDa

Observed Molecular Weight

41 kDa

Species

Human