Polyclonal anti-V5 (GKPIPNPLLGLDST) is designed to detect V5 tagged fusion proteins. The V5 epitope tag is derived from a small epitope (Pk) present on the P and V proteins of the paramyxovirus of simian virus 5 (SV5). The antibody recognizes the epitope tag fused to either the amino- or carboxy- termini of targeted proteins. This product is prepared by labeling high quality polyclonal rabbit anti-V5 IgG (H+L) with the orange fluorescent dye CF543. CF543 is an orange fluorescent dye with an excitation spectrum optimally matching the 543 laser line. Antibody conjugates of the dye are much brighter than those of Alexa Fluorв 546.