UASt regulatory sequences drive expression of a VHH intrabody ('3F5') that has been shown previously (PMID:16319127) to bind the coiled-coil domain of Hsap\PABPN1. The coding sequence is tagged at the N-terminal end with a Tag:NLS(SV40-largeT) nuclear localization signal and at the C-terminal end with both Tag:MYC and Tag:polyHis.