The coding sequence of FLPo and ΦC31o was commercially synthesized de novo (Geneart GmbH, Regensburg, Germany) based on the published FLPe and ΦC31 coding sequence [8] (link), [11] (link). The coding sequence of endogenous ΦC31 was PCR-amplified from phage lysate (Deutsche Sammlung von Mikroorganismen und Zellkulturen (DSMZ) GmbH, Braunschweig, Germany). A C-terminal SV40 nuclear localization signal was also added to the endogenous ΦC31 coding sequence as previously described [11] (link). The FLPo, ΦC31o, and ΦC31 coding sequences were blunt cloned into mammalian expression vectors driven by the high expressing phosphoglycerate kinase 1 (PGK) promoter and containing the bovine growth hormone polyadenylation (bpA) sequence.
Full text: Click here