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. 2015 Jun 18;9(6):e0003850. doi: 10.1371/journal.pntd.0003850

Fig 2. Generation of recombinant BoHV-4s.

Fig 2

Diagram (not to scale; A) showing the retargeting event obtained by heat-inducible homologous recombination in SW102 containing pBAC-BoHV-4-A-TK-KanaGalK-TK, where the Kana/GalK cassette was replaced with the CMV-A29LgD106, EF1α-M1RgD106 and EF1α-B6RgD106 expression cassettes flanked by BoHV-4 TK sequences, located in pINT2 shuttle plasmid vector. B) Representative 2-deoxy-galactose resistant colonies (1 and 2) tested by HindIII restriction enzyme analysis, agar gel electrophoresis, and Southern blotting performed with specific probes for the A29L, M1R and B6R ORFs. The 2,650 bp band (yellow circle), corresponding to the un-retargeted pBAC-BoHV-4-A-TK-KanaGalK-TK control (C), has been replaced by a 1,661 bpband (red circle) in pBAC-BoHV-4-A-CMV-A29LgD106ΔTK, by a 2,929 bp band (red circle) in pBAC-BoHV-4-A-EF1α-B6RgD106ΔTK and by a 2,725 bp band (red circle) in pBAC-BoHV-4-A-EF1α-M1RgD106ΔTK.