APC Labeling Kit

The CPK APC Labeling Kit is optimized for use in the conjugation of allophycocyanin (APC) to antibodies. APC can be isolated from various species of red or blue-green algae, each producing slightly different forms of the molecule. It is an ultra-sensitive, near-infrared fluorescent tracer with a high quantum yield (Ex/Em = 650 nm/660 nm). APC- labeled antibodies are used in applications such as flow cytometry and immunofluorescence. The CPK APC Labeling Kit contains SH-reactive APC. SMCC modified allophycocyanin reacts with the thiol groups of target antibody without the need for additional activation, thus simplifying the conjugation protocol. The CPK APC Labeling Kit contains a chemically cross-linked APC (CL-APC) that is much more stable than the native APC, but still retains the original spectroscopic properties. The amount of APC supplied in this kit is sufficient for labeling up to 1 mg of antibody. The kit provides all reagents, purification columns and a detailed step-by-step protocol. Cross-linked and SMCC-activated APC are also available as separate products.

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