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. 1987 Sep 1;246(2):375–386. doi: 10.1042/bj2460375

The pentafunctional arom enzyme of Saccharomyces cerevisiae is a mosaic of monofunctional domains.

K Duncan 1, R M Edwards 1, J R Coggins 1
PMCID: PMC1148286  PMID: 2825635

Abstract

The nucleotide sequence of the Saccharomyces cerevisiae ARO1 gene which encodes the arom multifunctional enzyme has been determined. The protein sequence deduced for the pentafunctional arom polypeptide is 1588 amino acids in length and has a calculated Mr of 174555. Functional regions within the polypeptide chain have been identified by comparison with the sequences of the five monofunctional Escherichia coli enzymes whose activities correspond with those of the arom multifunctional enzyme. The observed homologies demonstrate that the arom polypeptide is a mosaic of functional domains and are consistent with the hypothesis that the ARO1 gene evolved by the linking of ancestral E. coli-like genes.

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Selected References

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