Abstract

Nucleotide sequencing of a virulent African swine fever virus (ASFV) isolate (Malawi LIL20/1) identified an open reading frame of 1191 amino acid residues encoding a protein of 134·9 kDa. This gene mapped to the SalI i and j restriction endonuclease fragments of the ASFV genome. The predicted polypeptide was found to share 21·1% identity over a 1077 amino acid region with the human type II DNA topoisomerase. The sequence is compared to other type II DNA topoisomerases and the possible roles in ASFV replication are discussed.

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