Trinucleotide repeats in yeast.
The yeast genome exhibits a variety of trinucleotide repeat arrays within protein-coding genes and intergenic regions. In the first situation, repeats are often not random relative to the translational frame, resulting preferably in long stretches of the two acidic amino acids or of their corresponding amine forms. Interestingly, the longest trinucleotide repeats are often found in genes encoding nuclearly located proteins. Repeats tend to be more frequent in long genes, but less frequent among members of gene families compared to unique genes. In the latter case, repeat arrays often differ in length or composition between the gene homologs, indicating their instability.
Unité de Génétique moléculaire des Levures (UMR1300 CNRS and UFR927 Univ. P. M. Curie, Paris), Institut Pasteur.
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Richard
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Dujon
D000595:Amino Acid Sequence; D000596:Amino Acids / Q000235:genetics; D001483:Base Sequence; D002874:Chromosome Mapping; D015825:Chromosomes, Fungal / Q000235:genetics; D005656:Fungal Proteins / Q000235:genetics; D016681:Genome, Fungal; D008969:Molecular Sequence Data; D016366:Open Reading Frames; D012441:Saccharomyces cerevisiae / Q000235:genetics*; D018911:Trinucleotide Repeats / Q000235:genetics*
D000596:Amino Acids; D005656:Fungal Proteins