A previously-developed PCR was used for the amplification of part of the UL27 region of the BoHV-1.1 genome, which codes for glycoprotein B, seeking the differentiation between BoHV-1.1 and BoHV-5 isolates. The PCR products generated from the BoHV-1 and BoHV-5 isolates showed a pattern of differentiated amplification of their molecular size. The PCR of the BoHV-5 products were sequenced and the results compared with the sequence of the BoHV-1.1 and BoHV-1.2 isolates previously deposited in the GenBank. It was verified that the difference between the PCR products is due to greater number of repetitions of G-C present at the end of the gB codifier region. The most common repeat sequences were 5'-G(A/T)CC-3'. The analysis of these repetitions was shown to be an auxiliary tool in the differentiation between BoHV1.1, BoHV-1.2 and BoHV-5 isolates.
BoHV-1.1; BoHV-1.2; BoHV-5; gB; motifs
