The nucleotide sequence of the equine herpesvirus 4 thymidine kinase gene.

We have determined the genomic location and nucleotide sequence of the equine herpesvirus 4 thymidine kinase (TK) gene. The gene is positioned at approximately 0.48 map units within the long unique component of the genome and is flanked by genes encoding a herpes simplex virus 1 (HSV-1) UL24 homologue and glycoprotein H. The predicted protein is composed of 352 amino acids, has an Mr of 38,800 and exhibits 36% identity to the predicted TK of HSV-1.