Transcriptional regulation of ADE2 and PUT2 genes in Kluyveromyces lactis

Two genomic fragments containing the KlADE2 and the KlPUT2 genes were isolated from Kluyveromyces lactis genomic library by functional complementation of the corresponding ade2 and put2 mutations in Saccharomyces cerevisiae. The deduced KlAde2p and KlPut2p amino acid sequences displayed strong similarities to their counterparts in Saccharomyces cerevisiae (75% and 72% identity respectively) with highly conserved domains. Thus, we report the isolation and characterization of ADE2 and PUT2 genes from Kluyveromyces lactis, including their protein structure, flanking sequence regions, and transcriptional gene regulation by different nutrients in the medium.