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Description: This 3G8 monoclonal antibody reacts with human and non-human primate CD16, which is also known as the low-affinity Fc gamma RIII. CD16 exists as two distinct isoforms, Fc gamma RIIIA and Fc gamma RIIIB. In humans, Fc gamma RIIIA is expressed as a polypeptide-anchored form on monocytes, macrophages, and lymphocytes such as NK cells. T and B cells do not express this Fc receptor. Fc gamma RIIIB is also detected on neutrophils as a GPI-anchored form. Expression of CD16 on lymphocytes and monocytes is similar in non-human primates. However, while CD16 is not found on neutrophils in macaques and baboons, this receptor is detected on these cells in sooty mangabeys. Binding of IgG leads to activation of signal transduction pathways, resulting in antibody-dependent cell-mediated cytotoxicity (ADCC), phagocytosis, cytokine release, and antigen presentation.
Based on cross-blocking studies 3G8 recognizes the same epitope as CB16. However, 3G8 and B73.1 antibody clones bind distinct epitopes.
Applications Reported: This 3G8 antibody has been reported for use in flow cytometric analysis.
Applications Tested: This 3G8 antibody has been pre-titrated and tested by flow cytometric analysis of normal human and rhesus peripheral blood cells. This can be used at 5 µL (0.125 µg) per test. A test is defined as the amount (µg) of antibody that will stain a cell sample in a final volume of 100 µL. Cell number should be determined empirically but can range from 10^5 to 10^8 cells/test.
Super Bright 702 is a tandem dye that can be excited with the violet laser line (405 nm) and emits at 702 nm. We recommend using a 710/50 bandpass filter. Please make sure that your instrument is capable of detecting this fluorochrome.
When using two or more Super Bright dye-conjugated antibodies in a staining panel, it is recommended to use Super Bright Complete Staining Buffer (Product # SB-4401) to minimize any non-specific polymer interactions. Please refer to the datasheet for Super Bright Staining Buffer for more information.
Light sensitivity: This tandem dye is sensitive to photo-induced oxidation. Protect this vial and stained samples from light.
Fixation: Samples can be stored in IC Fixation Buffer (Product # 00-8222) (100 µL of cell sample + 100 µL of IC Fixation Buffer) or 1-step Fix/Lyse Solution (Product # 00-5333) for up to 3 days in the dark at 4°C with minimal impact on brightness and FRET efficiency/compensation. Some generalizations regarding fluorophore performance after fixation can be made, but clone specific performance should be determined empirically.
Excitation: 405 nm; Emission: 702 nm; Laser: Violet Laser
Super Bright Polymer Dyes are sold under license from Becton, Dickinson and Company.
CD16, known as Fc gamma receptor III, exists in two distinct isoforms: Fc gamma RIIIA and Fc gamma RIIIB. These isoforms are encoded by the genes FCGR3A and FCGR3B, respectively, which are located on chromosome 1 and share a high degree of similarity. Fc gamma RIIIA is expressed as a polypeptide-anchored form on monocytes, macrophages, and lymphocytes such as natural killer (NK) cells, but not on T or B cells. This receptor recognizes the Fc portion of immunoglobulin G (IgG) and is involved in the clearance of immune complexes from circulation. Upon binding IgG, Fc gamma RIIIA activates signal transduction pathways that result in antibody-dependent cell-mediated cytotoxicity (ADCC), phagocytosis, cytokine release, and antigen presentation. Fc gamma RIIIB is expressed on polymorphonuclear neutrophils (PMN) as a glycosylphosphatidylinositol (GPI)-anchored form. It plays a role in similar immune functions, including cellular-mediated cytotoxicity and enhancement of virus infections. Mutations in the FCGR3A gene have been associated with Immunodeficiency 20 and linked to susceptibility to recurrent viral infections, systemic lupus erythematosus, and alloimmune neonatal neutropenia. Alternatively spliced transcript variants encoding different isoforms have been identified for this gene. Diseases associated with FCGR3A include Immunodeficiency 20 and Herpes Zoster.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Watch the video to learn how to use the Invitrogen Flow Cytometry Panel Builder to build your next flow cytometry panel in 5 easy steps.
Protein Aliases: CD16-I; CD16-II; CD16a; CD16a antigen; CD16b; CD32; CD32 receptor 2; CDw32; Fc fragment of IgG low affinity IIIa receptor; Fc fragment of IgG, low affinity III, receptor for (CD16); Fc fragment of IgG, low affinity IIIa, receptor (CD16a); Fc fragment of IgG, low affinity IIIb, receptor (CD16b); Fc gamma receptor III-A; Fc gamma receptor IIIa; Fc gamma receptor IIIb; Fc gamma RIIIa; Fc-gamma receptor III-2 (CD 16); Fc-gamma receptor IIIb (CD 16); Fc-gamma receptor IIIb (CD16); Fc-gamma RII-b; Fc-gamma RII-c; Fc-gamma RIII; Fc-gamma RIII-alpha; Fc-gamma RIII-beta; Fc-gamma RIIIa; fc-gamma RIIIb; Fc-gamma-RIIb; Fc-gamma-RIIc; FCG2; FcgammaRIIIA; FCGR2; FCGR2A; FCGR2B; FCGR2C; FcR-10; FcRII-b; FcRII-c; IgG Fc receptor III; IgG Fc receptor III-1; IgG Fc receptor III-2; IgG Fc receptor III-A; immunoglobulin G Fc receptor III; low affinity immunoglobulin gamma Fc region receptor III; Low affinity immunoglobulin gamma Fc region receptor III-A; Low affinity immunoglobulin gamma Fc region receptor III-B; neutrophil-specific antigen NA; RP11-5K23.1
Gene Aliases: CD16; CD16A; CD16B; FCG3; FCGR3; FCGR3A; FCGR3B; FCGRIII; FCR-10; FCRIII; FCRIIIA; FCRIIIb; IGFR3; IMD20
UniProt ID: (Rhesus monkey) A3RFZ7, (Human) P08637, (Human) O75015
Entrez Gene ID: (Rhesus monkey) 720006, (Human) 2214, (Human) 2215
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