1. Institute of Organic Chemistry and Center for Molecular BiosciencesLeopold-Franzens University Innrain 80 6020 Innsbruck Austria
2. Institute of Molecular BiologyBiocenterMedical University of Innsbruck Innrain 82 6020 Innsbruck Austria
3. Université de StrasbourgArchitecture et Réactivité de l'ARN—CNRS UPR 9002Institut de Biologie Moléculaire et Cellulaire 67000 Strasbourg France
4. Institute of BioinformaticsBiocenterMedical University of Innsbruck Innrain 82 6020 Innsbruck Austria