Gt(ROSA)26Sor^{tm7(CAG-EYFP*,-mCherry*,-EGFP*,-mCerulean*)Ben}

This allele has three chromatin/nuclear-targeted fluorescent protein sequences uniquely flanked with pairs of incompatible lox sites (in the same direction), all inserted between exons 1 and 2 of the Gt(ROSA)26Sor locus. The targeting vector is designed with (from 5' to 3') a CMV-IE enhancer/chicken beta-actin/rabbit beta-globin hybrid promoter (from pCAGGS), a loxN site, a lox2272 site, a loxP site, the N-PhiMut gene (non-cytotoxic/non-fluorescent Phialidium yellow fluorescent protein variant PhiYFP with nuclear localization signal), bovine GH polyA signal sequence, a second loxN site, the His-H2B-Cherry gene (monomeric DsRed fluorescent protein variant mCherry with N-terminal 6xHis affinity tag and 125 amino acid human histone 2B chromatin/nucleus tag sequence), in-frame Thosea asigna virus 2A cleavage site (T2A; mediates ribosomal skipping), bovine GH polyA signal sequence, a second lox2272 site, the H2B-EGFP-V5 gene (enhanced green fluorescent protein with 127 amino acid human histone 2B chromatin/nucleus tag plus C-terminal paramyxovirus V5 tag sequence), in-frame T2A sequence, bovine GH polyA signal sequence, a second loxP site, the HA-H2B-Cerulean gene (monomeric enhanced cyan fluorescent protein variant mCerulean with N-terminal hemagglutinin (HA) tag and 125 amino acid human histone 2B chromatin/nucleus tag sequence), in-frame T2A sequence, and bovine GH polyA signal sequence. (J:252386)