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Partec Reagents & mAb Catalog

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sPecificity format order no. Qty isotyPe clone reactivity examPle<br />

cd16 FITC 05-7-514F 1 ml* IgG1 3G8 Hu<br />

PE 05-7-514P 1 ml*<br />

APC 05-7-514A 1 ml*<br />

FITC 05-7-506F 1 ml* IgG1 HI16a Hu<br />

comment<br />

CD16 (FcγRIII) is a 50-80 kDa glycoprotein serving as a low affinity IgG receptor. Human<br />

FcγRIII is expressed in two forms FcγRIII-A and –B. FcγRIII-A is a transmembrane<br />

protein of monocytes, macrophages, NK cells and a subset of T cells. It is associated<br />

with the FcεRI-γ subunit and is responsible for antibody-dependent NK cell cytotoxicity.<br />

Mast cell FcγRIII-A is associated, moreover, with FcεRI-β subunit. Besides IgG, FcεRI-A<br />

can be triggered also by oligomeric IgE. FcγRIII-B is a GPI-linked monomeric receptor<br />

expressed on neutrophils and is involved in the activation and induction of a proadhesive<br />

phenotype.<br />

The antibody 3G8 reacts with CD16, a low affinity receptor for aggregated IgG (FcγRIII<br />

antigen). CD16 exists in two different isoforms: CD16a (FcγRIIIA; 50-65 kDa; expressed<br />

on NK cells, monocytes and macrophages) and CD16b (FcγRIIIB; 48 kDa; mainly expressed<br />

on neutrophils).<br />

The antibody HI16a reacts with CD16, a low affinity receptor for aggregated IgG (FcγRIII<br />

antigen).<br />

cd18 FITC 05-7-150F 1 ml* IgG1 MEM-48 Hu<br />

PE 05-7-150P 1 ml*<br />

APC 05-7-150A 1 ml*<br />

comment<br />

CD18, integrin β2 subunit, forms heterodimers with four types of CD11 molecule to<br />

constitute leukocyte (β2) integrins: αLβ2 (CD11a/CD18, LFA-1), αMβ2 (CD11b/CD18,<br />

Mac-1, CR3), αXβ2 (CD11c/CD18) and αDβ2 (CD11d/CD18). In most cases, the response<br />

mediated by the integrin is a composite of the functions of its individual subunits. These<br />

integrins are essential for proper leukocyte migration, mediating intercellular contacts.<br />

Absence of CD18 leads to leukocyte adhesion deficiency-1; severe reduction of CD18<br />

expression leads to the development of a psoriasiform skin disease. CD18 is also a<br />

target of Mannheimia (Pasteurella) haemolytica leukotoxin and is sufficient to mediate<br />

leukotoxin-mediated cytolysis.<br />

The antibody MEM-48 recognises an epitope involving residues 534-546 in cysteine-rich<br />

repeat 3 of the CD18 antigen (integrin β2 subunit; β2 integrin). CD18 is a 90-95 kDa type I<br />

transmembrane protein expressed on all leukocytes. The antibody induces high-affinity<br />

conformation of LFA-1 complex.<br />

*for 50 tests<br />

Hu: human, Ms: mouse, Pri: primate, Por: porcine, Bo: bovine, Can: canine<br />

500<br />

400<br />

300<br />

200<br />

100<br />

List of mouse monoclonal antibodies<br />

ssc Analysed with CyFlow ®<br />

Pe cd16<br />

0<br />

0.1 1 10 100 1000<br />

13

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