Abstract
The URA1 gene (encoding orotidine-5'-monophosphate decarboxylase) of the basidiomycete fungus Schizophyllum commune was mapped to a 1.4-kb BglI- BamHI fragment of two independent phage λ clones previously isolated from a Schizophyllum genomic library. The fragment was identified by its ability to complement Schizophyllum ura1 mutants via transformation. The complete nucleotide sequence of the fragment containing the URA1 gene was determined. Sequence analysis revealed that the coding region of the URA1 gene encompasses a polypeptide of 279 amino acids (aa) interrupted by two small introns. The deduced aa sequence corresponds to 30.3 kDa and is substantially similar to the sequences of analogous polypeptides from other organisms. No canonical 5 ' -TATA sequence nor 3 ' -AATAAA polyadenylation signal are evident in the flanking regions of the URA1 gene.
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