A single-copy suppressor of the Saccharomyces cerevisae late-mitotic mutants cdc15 and dbf2 is encoded by the Candida albicans CDC14 gene.
The Saccharomyces cerevisiae CDC15, DBF2, TEM1 and CDC14 genes encode regulatory proteins that play a crucial role in the latest stages of the M phase of the cell cycle. By complementation of a S. cerevisiae cdc15-lyt1 mutant with a Candida albicans centromeric-based genomic library, we have isolated a homologue of the protein phosphatase-encoding gene CDC14. The sequence analysis of the C. albicans CDC14 gene reveals a putative open reading frame of 1626 base pairs interrupted by an intron located close to the 5' region. Analysis of C. albicans cDNA proved that the intron is processed in vivo. The CaCDC14 gene shares 49% of amino acid sequence identity with the S. cerevisiae CDC14 gene, 46% with Schizosaccharomyces pombe homologue, 35% with Caenorhabditis elegans and 37% and 38% with human CDC14A and CDC14B genes, respectively. As expected, the C. albicans CDC14 gene complemented a S. cerevisiae cdc14-1 mutant. We found that this gene was able to efficiently suppress not only a S.cerevisiae cdc15-lyt1 mutant but also a dbf2-2 mutant in a low number of copies and allowed growth, although very slightly, of a tem1 deletant. Overexpression of the human CDC14A and CDC14B genes complemented, although very poorly, S. cerevisiae cdc15-lyt1 and dbf2-2 mutants, suggesting a conserved function of these genes throughout phylogeny. The sequence of CaCDC14 was deposited in the EMBL database under Accession No. AJ243449.
Jiménez
J
J
Departamento Microbiología y Genética, Universidad de Salamanca, Avda. Doctores de la Reina, s/n 37007 Salamanca, Spain.
Cid
V J
VJ
Nombela
C
C
Sánchez
M
M
D000595:Amino Acid Sequence; D001483:Base Sequence; D002176:Candida albicans / Q000235:genetics*; D018797:Cell Cycle Proteins / Q000235:genetics*; D003001:Cloning, Molecular; D019204:GTP-Binding Proteins / Q000235:genetics*; D018628:Gene Dosage; D015966:Gene Expression Regulation, Fungal; D005816:Genetic Complementation Test; D007438:Introns / Q000235:genetics; D008938:Mitosis / Q000235:genetics*; D008969:Molecular Sequence Data; D011494:Protein Kinases / Q000235:genetics*; D017346:Protein Serine-Threonine Kinases; D017027:Protein Tyrosine Phosphatases; D012326:RNA Splicing / Q000235:genetics; D012441:Saccharomyces cerevisiae / Q000166:cytology / Q000201:enzymology / Q000235:genetics*; D029701:Saccharomyces cerevisiae Proteins; D017386:Sequence Homology, Amino Acid; D013489:Suppression, Genetic / Q000235:genetics*
C074860:CDC14 protein, S cerevisiae; C082279:CDC15 protein; D018797:Cell Cycle Proteins; D029701:Saccharomyces cerevisiae Proteins; D011494:Protein Kinases; C085768:DBF2 protein, S cerevisiae; D017346:Protein Serine-Threonine Kinases; D017027:Protein Tyrosine Phosphatases; D019204:GTP-Binding Proteins