Caddick MX, Arst HN. Deletion of the 389 N-terminal residues of the transcriptional activator AREA does not result in nitrogen metabolite derepression in Aspergillus nidulans.
J Bacteriol 1998;
180:5762-4. [PMID:
9791130 PMCID:
PMC107639 DOI:
10.1128/jb.180.21.5762-5764.1998]
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Abstract
Utilizing a homologous gene replacement in order to retain the native promoter and 5' and 3' untranslated messenger regions (and thereby ensure physiological validity), we have shown that deletion of the N-terminal 389 amino acids of the transcriptional activator AREA does not result in nitrogen metabolite derepression in Aspergillus nidulans. Our results provide no evidence for a modulating interaction involving the N terminus of AREA and contrast with those of H. K. Lamb, A. L. Dodds, D. R. Swatman, E. Cairns, and A. R. Hawkins (J. Bacteriol. 179:6649-6656, 1997), who used nontargeted ectopic copies of a construct containing a heterologous promoter and untranslated regions. Results obtained with this deletion mutant, nevertheless, provide further evidence for the dispensability of large portions of AREA.
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