SPR with Cynomolgus Fc gamma RIII/CD16 Protein 4140

Cynomolgus Fc gamma RIII/CD16 Protein 4140

$240.00 – $800.00

Summary

Expression: HEK293
Binding assay: Yes (SPR)
Amino Acid Range: Gly17-Gln208

SKU: 4140parent Categories: proteins, Recombinant proteins Tag: active proteins

Weight	1 lbs
Dimensions	9 × 5 × 2 in
accession	Q8SPW2
express system	HEK293
product tag	C-His
purity	> 95% as determined by Tris-Bis PAGE;> 95% as determined by HPLC
background	Immunoglobulin G (IgG) Fc receptors play a critical role in linking IgG antibody-mediated immune responses with cellular effector functions. A high resolution map of the binding site on human IgG1 for human Fc gamma RI, Fc gamma RIIA, Fc gamma RIIB, Fc gamma RIIIA, and FcRn receptors has been determined.A common set of IgG1 residues is involved in binding to all Fc gamma R; Fc gamma RII and Fc gamma RIII also utilize residues outside this common set.
molecular weight	The protein has a predicted MW of 23.1 kDa. Due to glycosylation, the protein migrates to 45-55 kDa based on Tris-Bis PAGE result.
available size	100 µg, 500 µg
endotoxin	Less than 1EU per μg by the LAL method.

Cynomolgus Fc gamma RIII/CD16 Protein 4140

protein

Size and concentration 100, 500µg and lyophilized
Form Lyophilized
Storage Instructions Valid for 12 months from date of receipt when stored at -80°C. Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.
Storage buffer Shipped at ambient temperature.
Purity > 95% as determined by Tris-Bis PAGE

target relevance
Immunoglobulin G (IgG) Fc receptors play a critical role in linking IgG antibody-mediated immune responses with cellular effector functions. A high resolution map of the binding site on human IgG1 for human Fc gamma RI, Fc gamma RIIA, Fc gamma RIIB, Fc gamma RIIIA, and FcRn receptors has been determined.A common set of IgG1 residues is involved in binding to all Fc gamma R; Fc gamma RII and Fc gamma RIII also utilize residues outside this common set.
Protein names Low affinity immunoglobulin gamma Fc region receptor III-A (IgG Fc receptor III-A) (Fc-gamma RIII-alpha) (Fc-gamma RIII) (Fc-gamma RIIIa) (FcgammaRIIIa) (CD antigen CD16a)
Protein family 118
Function Receptor for the invariable Fc fragment of immunoglobulin gamma (IgG). Optimally activated upon binding of clustered antigen-IgG complexes displayed on cell surfaces, triggers lysis of antibody-coated cells, a process known as antibody-dependent cellular cytotoxicity (ADCC). Does not bind free monomeric IgG, thus avoiding inappropriate effector cell activation in the absence of antigenic trigger (By similarity). Mediates IgG effector functions on natural killer (NK) cells. Binds antigen-IgG complexes generated upon infection and triggers NK cell-dependent cytokine production and degranulation to limit viral load and propagation. Involved in the generation of memory-like adaptive NK cells capable to produce high amounts of IFNG and to efficiently eliminate virus-infected cells via ADCC. Regulates NK cell survival and proliferation, in particular by preventing NK cell progenitor apoptosis (By similarity). Fc-binding subunit that associates with CD247 and/or FCER1G adapters to form functional signaling complexes. Following the engagement of antigen-IgG complexes, triggers phosphorylation of immunoreceptor tyrosine-based activation motif (ITAM)-containing adapters with subsequent activation of phosphatidylinositol 3-kinase signaling and sustained elevation of intracellular calcium that ultimately drive NK cell activation. The ITAM-dependent signaling coupled to receptor phosphorylation by PKC mediates robust intracellular calcium flux that leads to production of pro-inflammatory cytokines, whereas in the absence of receptor phosphorylation it mainly activates phosphatidylinositol 3-kinase signaling leading to cell degranulation (By similarity). Costimulates NK cells and trigger lysis of target cells independently of IgG binding (By similarity). Mediates the antitumor activities of therapeutic antibodies. Upon ligation on monocytes triggers TNFA-dependent ADCC of IgG-coated tumor cells (By similarity). Mediates enhanced ADCC in response to afucosylated IgGs (By similarity).
Pathway 12
Subellular location Cell membrane ; Single-pass type I membrane protein. Secreted. Note=Exists also as a soluble receptor.
Tissues Lymphocytes and monocytes.
Structure Forms a heterooligomeric complex with ITAM-containing signaling subunits, either a homodimer of CD247, a homodimer of FCER1G or a heterodimer of CD247 and FCER1G. Interacts (via transmembrane domain) with signaling subunits; this interaction is a prerequisite for receptor complex expression on the cell surface and intracellular signal transduction. Binds the Fc region of antigen-complexed IgG with a preference for IgG1 and IgG3 isotypes (By similarity). Interacts with CD2; this interaction is involved in NK cell activation and cytotoxicity (By similarity). Interacts with S100A4; this interaction inhibits PKC-dependent phosphorylation of FCGR3A (By similarity).
Post-translational modification Glycosylated. Glycosylation plays an inhibitory role in the interaction with IgG1 and IgG2.; Undergoes rapid ectodomain shedding upon NK cell stimulation. The soluble form is produced by a proteolytic cleavage mediated by ADAM17. Repeated stimulation causes receptor shedding, a mechanism that allows for increased NK cell motility and detachment from opsonized target cells while avoiding activation-induced NK cell apoptosis.
Target Relevance information above includes information from UniProt accession: Q8SPW2
The UniProt Consortium

Data

SPR with Cynomolgus Fc gamma RIII/CD16 Protein

Rituximab captured on CM5 Chip via Protein A can bind Cynomolgus Fc gamma RIII, His Tag with an affinity constant of 0.251 µM as determined in SPR assay (Biacore T200).

HPLC of Cynomolgus Fc gamma RIII/CD16 Protein

The purity of Cynomolgus Fc gamma RIII is greater than 95% as determined by SEC-HPLC.

SDS-PAGE gel of Cynomolgus Fc gamma RIII/CD16 Protein

Cynomolgus Fc gamma RIII on Tris-Bis PAGE under reduced condition. The purity is greater than 95%.

Publications

Published literature highly relevant to the biological target of this product and referencing this antibody or clone are retrieved from PubMed database provided by The United States National Library of Medicine at the National Institutes of Health.