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DNA Seq. 1991;2(1):19-32.

The urea amidolyase (DUR1,2) gene of Saccharomyces cerevisiae.

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Department of Microbiology and Immunology, University of Tennessee, Memphis 38163.


The DNA sequence of the urea amidolyase (DUR1,2) gene from S. cerevisiae has been determined. The polypeptide structure deduced from the DNA sequence contains 1,835 amino acid residues and possesses a calculated weight of 201,665 daltons which favorably correlates with that predicted from compositional analysis of purified protein (1,881 amino acid residues and a molecular weight of 203,900). The C-terminal 57 residues of the polypeptide exhibit significant homology with similarly situated sequences found in five other biotin carboxylases whose primary structures have been determined or deduced from protein and DNA sequence data, respectively. Major S1 nuclease protection fragments derived from DUR1,2 RNA-DNA hybrids exhibit apparent termini at positions -140 and -141 upstream of the coding region. The termini of minor protection fragments also occur at eleven other positions as well.

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