Publications - Published papers

Please find below publications of our group. Currently, we list 500 papers. Some of the publications are in collaboration with the group of Sonja Prohaska and are also listed in the publication list for her individual group. Access to published papers (access) is restricted to our local network and chosen collaborators. If you have problems accessing electronic information, please let us know:

©NOTICE: All papers are copyrighted by the authors; If you would like to use all or a portion of any paper, please contact the author.

Small ncRNA transcriptome analysis from <i>Aspergillus fumigatus</i> suggests a novel mechanism for regulation of protein-synthesis

Christoph Jöchl, Mathieu Rederstorff, Jana Hertel, Peter F. Stadler, Ivo L. Hofacker, Markus Schrettl, Hubertus Haas, Alexander Hüttenhofer


PREPRINT 08-003:
[ Publishers's page ]  paperID


Nucleic Acids Res. 36: 2677-2689 (2008)


Small non-protein-coding RNAs (ncRNAs) have systematically been studied in various model organisms from Escherichia coli to Homo sapiens. Here, we analyse the small ncRNA transcriptome from the pathogenic filamentous fungus Aspergillus fumigatus. To that aim, we experimentally screened for ncRNAs, expressed under various growth conditions or during specific developmental stages, by generating a specialised cDNA library from size- selected small RNA species. Our screen revealed 30 novel ncRNA candidates from known ncRNA classes such as small nuclear RNAs (snRNAs) and C/D box- type small nucleolar RNAs (C/D box snoRNAs). Additional, a number of H/ACA box snoRNAs could be predicted by a bioinformatical screen. We also identified 15 candidates of ncRNAs, which could not be assigned to any known ncRNA class. Some of these ncRNA species are developmentally regulated implying a possible novel function in A. fumigatus development. Surprisingly, in addition to full-length tRNAs, we also identified 5’- or 3‘-halves of tRNAs, only, which are likely generated by tRNA cleavage within the anticodon loop. We show that conidiation induces tRNA cleavage resulting in tRNA depletion within conidia. Since conidia represent the resting state of A. fumigatus we propose that conidial tRNA depletion might be a novel mechanism to down-regulate protein synthesis in a filamentous fungus.