Monoclonal Anti-CD16−FITC antibody produced in mouse

clone 3G8, purified immunoglobulin, buffered aqueous solution

MDL number:

Quality Level

biological source


antibody form

purified immunoglobulin

antibody product type

primary antibodies


3G8, monoclonal


buffered aqueous solution

species reactivity


storage condition

protect from light


flow cytometry: 10 μL using 1 × 106 cells




FITC conjugate

UniProt accession no.

shipped in

wet ice

storage temp.


Gene Information

human ... FCGR3A(2214), FCGR3B(2215)

General description

Monoclonal Anti-CD16 (mouse IgG1 isotype) is derived from the 3G8 hybridoma produced by the fusion of mouse myeloma cells and splenocytes from an immunized CD2F1 mouse.
Human CD16 or FCγRIII is a 50-70kDa membrane glycoprotein expressed by neutrophils, eosinophils, cultured monocytes, natural killer (NK) cells, tissue macrophages subpopulation, and on a small subset of T cells that binds aggregated but not monomeric human IgG. It is also known as FcR3, the low affinity receptor for complexed IgG. It comprises of two truncated Ig-like cytoplasmic domains.


Recognizes the human CD16 antigen expressed on natural killer (NK) cells, granulocytes and a macrophage subpopulation. The antibody reacts with both NA1 and NA2 neutrophils and NK lymphocytes. It strongly labels neutrophils in tissue frozen sections. Liver Kupffer cells are weakly stained. The epitope recognized by the antibody seems to reside near the IgG binding site of FCγ-RIII. The antibody functionally blocks binding of soluble immune complexes to granulocytes and inhibits E-IgG rosettes. It induces Ca2+ increase in neutrophils.


viable human polymorphonuclear cells.


Monoclonal Anti-CD16-FITC antibody is suitable for receptor blocking in flow cytometry analysis.
Monoclonal Anti-CD16-FITC antibody produced in mouse has been used in direct immunofluorescent staining.

Biochem/physiol Actions

Cluster of differentiation 16 (CD16) induces Ca2+ increase in neutrophils. It strongly labels neutrophils in tissue frozen sections. Liver kupffer cells are weakly stained. The antibody functionally blocks binding of soluble immune complexes to granulocytes and inhibits E-IgG rosettes.
Human CD16 plays a pivotal role in immune responses by linking the humoral immune system with cellular effector functions. CD16 plays an important role in natural killer (NK)-cell function and in peripheral blood mononuclear cells (PBMCs). In the FcyRIII-expressing lymphocytes the NK cell activity is highly influenced through FcyRIII. CD16 exists as a transmembrane form in NK cells, macrophages and cultured monocytes with a 25 amino acid cytoplasmic tail which further connects with other receptors. The transmembrane form binds complexed IgG and mediates phagocytosis and antibody-dependent cellular cytotoxicity (ADCC).

Target description

CD16 antigen (also known as the low affinity receptor for complexed IgG, or Fcγ-RIII) expressed on natural killer (NK) cells, a macrophage sub-population and weakly on granulocytes. The human CD16 molecule exhibits two truncated Ig-like domains. In NK cells and macrophages, a trans-membrane form (50-80 kDa) with a 25 amino acid cytoplasmic tail is present. This form is non-covalently associated with other receptors (FcεRIγ or the TcRξ chain). The human CD16 molecule in granulocytes is a glycosyl-phosphatidyl-inositol (GPI)-linked form.

Physical form

Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 1% bovine serum albumin and 15 mM sodium azide.

Preparation Note

Prepared by conjugation to fluorescein isothiocyanate isomer I (FITC). This green dye is efficiently excited at 495 nm and emits at 525 nm.


Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Fleit, H.B., et al. et al.
Leucocyte Typing IV, 579-579 (1989)
D Harrison et al.
Journal of immunology (Baltimore, Md. : 1950), 147(10), 3459-3465 (1991-11-15)
Two genes encode the CD16 low affinity IgG FcR. CD16-I (Fc gamma RIII-1) is expressed on PMN as a phosphatidylinositol-glycan anchored glycoprotein. CD16-II (Fc gamma RIII-2) is expressed on NK cells and macrophages as a transmembrane glycoprotein associated with CD3...
J V Ravetch et al.
Annual review of immunology, 9, 457-492 (1991-01-01)
Recent advances in the structural analysis of the genes and proteins for immunoglobulin Fc domain receptors have provided a molecular characterization of this complex family. The wide cellular distribution of these receptors and their functional heterogeneity are reflected in the...
B J Scallon et al.
Proceedings of the National Academy of Sciences of the United States of America, 86(13), 5079-5083 (1989-07-01)
Several cDNA clones encoding the human immunoglobulin G receptor CD16 were isolated from human lung or peripheral blood leukocyte cDNA libraries. Nucleotide sequence comparisons revealed that the cDNAs could be divided into two groups. cDNA clones in one group encode...
Differential regulation of human neutrophil FcgammaRIIa (CD32) and FcgammaRIIIb (CD16)-induced Ca2+ transients
Edberg JC, et al.
The Journal of Biological Chemistry, 273(14), 8071-8079 (1998)

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