Reference: Mannhaupt G, et al. (1989) Characterization of the prephenate dehydrogenase-encoding gene, TYR1, from Saccharomyces cerevisiae. Gene 85(2):303-11

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Abstract

TYR1, the gene from Saccharomyces cerevisiae, which encodes prephenate dehydrogenase, one of the tyrosine biosynthetic enzymes, has been cloned by complementing a yeast tyr1 mutant strain. The DNA fragment containing the gene is part of a 45-kb cosmid clone which represents a region of chromosome II covering the genetically mapped tyr1 locus. The nucleotide sequence of a 3.1-kb region carrying the TYR1 gene and adjacent regions has been determined. The open reading frame contains 441 codons, corresponding to about 52.2 kDa for the encoded protein. The canonical NAD-binding domain is located within the first 45 amino acids of the protein. By primer extension, we show that there is one transcription start point. Presumably, the expression of TYR1 is not under the general GCN4 control. Instead, we find a dependence on the presence or absence of phenylalanine. These data were obtained by analysing CAT activity in constructs containing promoter fragments of TYR1 and the cat reporter gene.

Reference Type
Journal Article
Authors
Mannhaupt G, Stucka R, Pilz U, Schwarzlose C, Feldmann H
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