Cloning of thePYR4gene encoding orotidine-5′-phosphate decarboxylase inCephalosporium acremonium
✍ Scribed by Alejandro Vian; Miguel Angel Peñalva
- Book ID
- 104717250
- Publisher
- Springer-Verlag
- Year
- 1990
- Tongue
- English
- Weight
- 638 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0172-8083
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✦ Synopsis
We have cloned the Cephalosporium acremonium pyr4 gene by cross-hybridization with the equivalent gene from Neurospora crassa, the closest relative from which this gene is available. The C. acremonium pyr4 gene complements an E. coli pyrF mutant lacking orotidine-5'-phosphate decarboxylase (OMPdecase), and most probably does not contain introns. Maxicell analysis in E. coli shows that it encodes a 46 kDa polypeptide. The C. acremonium OMPdecase contains a highly conserved pentadecapeptide characteristic for this category of enzyme. Extensive sequence comparison suggests an important role of this region in enzymatic activity.
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