PMID: 8950182Nov 11, 1996Paper

Sequence analysis and expression of the Penicillium chrysogenum nitrate reductase encoding gene (niaD)

Biochimica Et Biophysica Acta
H HaasG Stöffler

Abstract

The nitrate reductase gene (niaD) of the filamentous fungus Penicillium chrysogenum encodes a protein of 864 amino acids. The derived protein sequence shows 78% and 72% sequence identity to the corresponding Aspergillus niger and A. nidulans proteins, respectively. The coding region of the Penicillium gene is interrupted by six small introns, as deduced by comparison with the niaD sequences of A. niger and A. nidulans, whereby the positions of the introns are perfectly conserved between these three fungal genes. Northern blot analysis indicated a 2.8 kb transcript and showed that expression of this gene is controlled at the level of mRNA accumulation depending on both induction by nitrate and nitrogen metabolite derepression. Induction of transcription of niaD was found to be paralleled by expression of the major nitrogen regulatory gene nre.

References

Oct 5, 1990·Journal of Molecular Biology·S F AltschulD J Lipman
Jul 8, 1994·Molecular & General Genetics : MGG·R S WilliamsB J Howlett

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