The pESC vectors are a series of epitope-tagging vectors for expression of eukaryotic genes in the yeast S. cerevisiae and each vector contains GAL1 and GAL10 yeast promoters in opposing orientations.

• Fast and easy immunoprecipitations

These vectors also feature an extensive polylinker sequence and the ability to generate end-specific RNA transcripts from T3 and T7 promoters. Each of the pESC vectors contains one of four different yeast-selectable markers (HIS3, TRP1, LEU2, or URA3) in the same vector backbone.

It contains DNA sequences coding for epitope peptides that can be specifically recognised by monoclonal antibodies.

A sequence for the FLAG® epitope (DYKDDDDK) is located in the multiple cloning site (MCS) downstream of the GAL10 promoter; a sequence for the c-Myc epitope (EQKLISEEDL) is located in the MCS downstream of the GAL1 promoter.

These tags allow the protein of interest to be studied without generating a specific antibody to that protein. The epitope-tagged fusion proteins can be studied in transformed cells using well-characterised antibodies.