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| Content Provider | PubMed Central |
|---|---|
| Author | Fox, Ellen M. Gardiner, Donald M. Keller, Nancy P. Howlett, Barbara J. |
| Abstract | A gene, sirZ, encoding a Zn(II)2Cys6 DNA binding protein is present in a cluster of genes responsible for the biosynthesis of the epipolythiodioxopiperazine (ETP) toxin, sirodesmin PL in the ascomycete plant pathogen, Leptosphaeria maculans. RNA-mediated silencing of sirZ gives rise to transformants that produce only residual amounts of sirodesmin PL and display a decrease in the transcription of several sirodesmin PL biosynthetic genes. This indicates that SirZ is a major regulator of this gene cluster. Proteins similar to SirZ are encoded in the gliotoxin biosynthetic gene cluster of Aspergillus fumigatus (gliZ) and in an ETP-like cluster in Penicillium lilacinoechinulatum (PlgliZ). Despite its high level of sequence similarity to gliZ, PlgliZ is unable to complement the gliotoxin-deficiency of a mutant of gliZ in A. fumigatus. Putative binding sites for these regulatory proteins in the promoters of genes in these clusters were predicted using bioinformatic analysis. These sites are similar to those commonly bound by other proteins with Zn(II)2Cys6 DNA binding domains. |
| Related Links | http://dx.doi.org/10.1016/j.fgb.2007.10.005 |
| Ending Page | 682 |
| Page Count | 12 |
| Starting Page | 671 |
| File Format | |
| ISSN | 10871845 |
| e-ISSN | 10960937 |
| Journal | Fungal genetics and biology : FG & B |
| Issue Number | 5 |
| Volume Number | 45 |
| Language | English |
| Publisher Date | 2008-05-01 |
| Access Restriction | Open |
| Subject Keyword | Genetics Microbiology Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Microbiology |
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