Cloning and sequencing of the Candida albicans homologue of SRB1/PSA1/VIG9, the essential gene encoding GDP-mannose pyrophosphorylase in Saccharomyces cerevisiae.
Two genomic fragments have been isolated from Candida albicans which strongly hybridize to SRB1/PSA1/VIG9, an essential gene which encodes GDP-mannose pyrophosphorylase in Saccharomyces cerevisiae. A common 2.5 kb Xbal-Pstl fragment has been identified, which Southern analysis suggests is most likely unique in the C. albicans genome. The fragment contains an ORF, which is 82% identical and 90% homologous to the Srb1p/Psa1p/Vig9p from S. cerevisiae, contains one additional amino acid at position 254 and is able to functionally complement the major phenotypic characteristics of S. cerevisiae srb1 null and conditional mutations. The authors therefore conclude that they have cloned and sequenced from C. albicans the bona fide homologue of SRB1/PSA1/VIG9, named hereafter CaSRB1. Northern analysis data indicate that the gene is expressed in C. albicans under conditions of growth in the yeast and hyphal form and suggest that its expression might be regulated.
Department of Biomolecular SciencesUMIST, PO Box 88, Manchester M60 1QDUK.
Saradee
S
Warit
Department of Biomolecular SciencesUMIST, PO Box 88, Manchester M60 1QDUK.
Richard M
RM
Walmsley
Department of Biomolecular SciencesUMIST, PO Box 88, Manchester M60 1QDUK.
Lubomira I
LI
Stateva
D000595:Amino Acid Sequence; D001483:Base Sequence; D002176:Candida albicans / Q000201:enzymology* / Q000235:genetics* / Q000254:growth & development; D003001:Cloning, Molecular; D017931:DNA Primers / Q000235:genetics; D004926:Escherichia coli / Q000235:genetics; D015966:Gene Expression Regulation, Fungal; D005800:Genes, Fungal; D005816:Genetic Complementation Test; D008969:Molecular Sequence Data; D009154:Mutation; D009713:Nucleotidyltransferases / Q000235:genetics*; D016366:Open Reading Frames; D010641:Phenotype; D016133:Polymerase Chain Reaction; D012441:Saccharomyces cerevisiae / Q000201:enzymology* / Q000235:genetics*; D017386:Sequence Homology, Amino Acid; D013045:Species Specificity
D017931:DNA Primers; D009713:Nucleotidyltransferases; C026917:mannose 1-phosphate guanylyltransferase