A. Taylor et al., IDENTIFICATION OF THE GENE ENCODING DNA TOPOISOMERASE-I FROM CANDIDA-ALBICANS, FEMS microbiology letters, 138(2-3), 1996, pp. 113-121
A gene encoding a type I topoisomerase (TOP1) was isolated from Candid
a albicans, sequenced, and expressed in Saccharomyces cerevisiae. The
TOP1 gene was identified from a C. albicans genomic library by hybridi
zation with the product of a polymerase chain reaction with degenerate
primer sets encoding regions conserved in other TOP1 genes. A clone c
ontaining an open reading frame of 2463 bp and predicted to encode a p
rotein of 778 amino acids with sequence similarity to eukaryotic type
I topoisomerases was identified. The C. albicans TOP1 gene restored ca
mptothecin sensitivity and increased the topoisomerase activity in S.
cerevisiae, indicating that the DNA fragment encodes a functional C. a
lbicans topoisomerase I.