Amino acid sequence alignment of the A. fumigatus squalene epoxidase gene ORF, which is contained within TRBRG (bp 1136 to 2350; GenBank accession number AY532916), C. albicans squalene epoxidase gene ERG1 (GenBank accession number D88252), and S. cerevisiae squalene epoxidase gene ERG1 (GenBank accession number M64994) was performed by using CLUSTAL_W1.82 at the European Bioinformatics Institute website (www.ebi.ac.uk). The asterisks indicate the residues in the column that are identical in all sequences in the alignment. A colon indicates conservative amino acid substitutions, and a period indicates semiconservative amino acid substitutions. CA-SE, C. albicans squalene epoxidase; SC-SE, S. cerevisiae squalene epoxidase; AF-SE, A. fumigatus squalene epoxidase.