pIRES2-ZsGreen1 is a bicistronic expression vector containing ZsGreen1 as a marker for transfection efficiency. It encodes a human-codon-optimized variant of the Zoanthus sp. green fluorescent protein, ZsGreen, which has been engineered for brighter fluorescence and higher expression in mammalian cells. A gene of interest is inserted into the MCS located upstream of the encephalomyocarditis virus (ECMV) internal ribosomal entry site (IRES). The IRES sequence allows the gene of interest and ZsGreen1 to be translated simultaneously from the same mRNA transcript.



