Cloning and functional characterization of the gene encoding the transcription factor Ace1 in the basidiomycete Phanerochaete chrysosporium.
In this report we describe the isolation and characterization of a gene encoding the transcription factor Ace1 (Activation protein of cup 1 Expression) in the white rot fungus Phanerochaete chrysosporium. Pc-ace1 encodes a predicted protein of 633 amino acids containing the copper-fist DNA binding domain typically found in fungal transcription factors such as Ace1, Mac1 and Haa1 from Saccharomyces cerevisiae. The Pc-ace1 gene is localized in Scaffold 5, between coordinates 220841 and 222983. A S. cerevisiae ace1 null mutant strain unable to grow in high-copper medium was fully complemented by transformation with the cDNA of Pc-ace1. Moreover, Northern blot hybridization studies indicated that Pc-ace1 cDNA restores copper inducibility of the yeast cup 1 gene, which encodes the metal-binding protein metallothionein implicated in copper resistance. To our knowledge, this is first report describing an Ace1 transcription factor in basidiomycetes.
Polanco
Rubén
R
Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile.
Canessa
Paulo
P
Rivas
Alexis
A
Larrondo
Luis F
LF
Lobos
Sergio
S
Vicuña
Rafael
R
D015152:Blotting, Northern; D003001:Cloning, Molecular; D003300:Copper / Q000494:pharmacology; D018076:DNA, Complementary; D004268:DNA-Binding Proteins / Q000235:genetics*; D005656:Fungal Proteins / Q000235:genetics*; D015966:Gene Expression Regulation, Fungal; D008957:Models, Genetic; D020075:Phanerochaete / Q000187:drug effects / Q000235:genetics*; D012333:RNA, Messenger / Q000032:analysis; D029701:Saccharomyces cerevisiae Proteins / Q000235:genetics*; D014157:Transcription Factors / Q000235:genetics*
C060256:CUP2 protein, S cerevisiae; D018076:DNA, Complementary; D004268:DNA-Binding Proteins; D005656:Fungal Proteins; D012333:RNA, Messenger; D029701:Saccharomyces cerevisiae Proteins; D014157:Transcription Factors; D003300:Copper