FacB, the Aspergillus nidulans activator of acetate utilization genes, binds dissimilar DNA sequences

The EMBO Journal
R B ToddM J Hynes

Abstract

The facB gene is required for acetate induction of acetamidase (amdS) and the acetate utilization enzymes acetyl-CoA synthase (facA), isocitrate lyase (acuD) and malate synthase (acuE) in Aspergillus nidulans. The facB gene encodes a transcriptional activator with a GAL4-type Zn(II)2Cys6 zinc binuclear cluster DNA-binding domain which is shown to be required for DNA binding. In vitro DNA-binding sites for FacB in the 5' regions of the amdS, facA, acuD and acuE genes have been identified. Mutations in amdS FacB DNA-binding sites affected expression of an amdS-lacZ reporter in vivo and altered the affinity of in vitro DNA binding. This study shows that the FacB Zn(II)2Cys6 cluster binds to dissimilar sites which show similarity in form but not sequence with DNA-binding sites of other Zn(II)2Cys6 proteins. Sequences with homology to FacB sites are found in the 5' regions of genes regulated by the closely related yeast Zn(II)2Cys6 protein CAT8.

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Citations

Jan 21, 2004·Fungal Genetics and Biology : FG & B·Andrew H SimsManda E Gent
Apr 26, 2002·Molecular Microbiology·Dennis GómezClaudio Scazzocchio
May 7, 2004·Applied and Environmental Microbiology·Joseph E Flaherty, Charles P Woloshuk
Jan 5, 2006·Applied and Environmental Microbiology·Mihoko TominagaOsamu Akita
Sep 9, 2006·Microbiology and Molecular Biology Reviews : MMBR·Sarah MacPhersonBernard Turcotte
Apr 16, 2011·Canadian Journal of Microbiology·Fernanda C A MaranhãoNilce M Martinez-Rossi
Sep 19, 2000·Bioscience, Biotechnology, and Biochemistry·M SanoM Machida
Mar 7, 2007·Genetics·Michael J HynesHeather M Sealy-Lewis
Mar 26, 2003·Applied Microbiology and Biotechnology·D BhatnagarT E Cleveland
May 16, 2009·Applied Microbiology and Biotechnology·Susan MeijerJens Nielsen
Dec 23, 2009·Fungal Genetics and Biology : FG & B·Katerina RoumeliotiVicky Sophianopoulou
Apr 12, 2007·Molecular Microbiology·David Cánovas, Alex Andrianopoulos
Aug 5, 2003·Acta Microbiologica Et Immunologica Hungarica·Monika Schmoll, C P Kubicek
Jul 28, 2021·MBio·Laure Nicolas Annick RiesGustavo H Goldman

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