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- Title
Molecular Cloning of cgrA, the Gene Encoding the Aspergillus nidulans Ortholog of Saccharomyces cerevisiae CGR1.
- Authors
Sun, Jianlan; Boettner, Douglas; Huebner, Nichole; Xu, Fan; Rhodes, Judith C.; Askew, David S.
- Abstract
Saccharomyces cerevisiae CGR1 encodes a 120-amino acid protein with a predominant nucleolar localization. In this study we report the identification and cloning of the ortholog, cgrA, from Aspergillus nidulans. The cgrA gene is comprised of three exons on A. nidulans Chromosome 7. The cDNA contains a single open reading frame (ORF) that would encode a protein of 114 amino acids with 44% sequence identity to yeast Cgr1p. A plasmid expressing cgrA complemented the impaired growth phenotype of a yeast strain that can be inducibly depleted of CGR1, and a green fluorescent protein (GFP)-tagged CgrA protein had the same nucleolar localization as the corresponding yeast protein. These results identify cgrA as the A. nidulans ortholog of yeast CGR1 and suggest evolutionary conservation of nucleolar localization mechanisms used by these proteins.
- Subjects
SACCHAROMYCES cerevisiae; AMINO acids; IMINO acids; PLASMIDS; CYTOPLASMIC inheritance; GREEN fluorescent protein
- Publication
Current Microbiology, 2001, Vol 42, Issue 6, p403
- ISSN
0343-8651
- Publication type
Article
- DOI
10.1007/s002840010237