RNA-Puzzles Round III: 3D RNA structure prediction of five riboswitches and one ribozyme

Zhichao Miao, Ryszard W. Adamiak, Maciej Antczak, Robert T. Batey, Alexander J. Becka, Marcin Biesiada, Michał J. Boniecki, Janusz M. Bujnicki, Shi Jie Chen, Clarence Yu Cheng, Fang Chieh Chou, Adrian R. Ferré-D'Amaré, Rhiju Das, Wayne K. Dawson, Feng Ding, Nikolay V. Dokholyan, Stanisław Dunin-Horkawicz, Caleb Geniesse, Kalli Kappel, Wipapat KladwangAndrey Krokhotin, Grzegorz E. Łach, François Major, Thomas H. Mann, Marcin Magnus, Katarzyna Pachulska-Wieczorek, Dinshaw J. Patel, Joseph A. Piccirilli, Mariusz Popenda, Katarzyna J. Purzycka, Aiming Ren, Greggory M. Rice, John Santalucia, Joanna Sarzynska, Marta Szachniuk, Arpit Tandon, Jeremiah J. Trausch, Siqi Tian, Jian Wang, Kevin M. Weeks, Benfeard Williams, Yi Xiao, Xiaojun Xu, Dong Zhang, Tomasz Zok, Eric Westhof

Research output: Contribution to journalArticlepeer-review

132 Scopus citations


RNA-Puzzles is a collective experiment in blind 3D RNA structure prediction. We report here a third round of RNA-Puzzles. Five puzzles, 4, 8, 12, 13, 14, all structures of riboswitch aptamers and puzzle 7, a ribozyme structure, are included in this round of the experiment. The riboswitch structures include biological binding sites for small molecules (S-adenosyl methionine, cyclic diadenosine monophosphate, 5-amino 4-imidazole carboxamide riboside 5'-triphosphate, glutamine) and proteins (YbxF), and one set describes large conformational changes between ligand-free and ligand-bound states. The Varkud satellite ribozyme is the most recently solved structure of a known large ribozyme. All puzzles have established biological functions and require structural understanding to appreciate their molecular mechanisms. Through the use of fast-track experimental data, including multidimensional chemical mapping, and accurate prediction of RNA secondary structure, a large portion of the contacts in 3D have been predicted correctly leading to similar topologies for the top ranking predictions. Template-based and homologyderived predictions could predict structures to particularly high accuracies. However, achieving biological insights from de novo prediction of RNA 3D structures still depends on the size and complexity of the RNA. Blind computational predictions of RNA structures already appear to provide useful structural information in many cases. Similar to the previous RNA-Puzzles Round II experiment, the prediction of non-Watson-Crick interactions and the observed high atomic clash scores reveal a notable need for an algorithm of improvement. All prediction models and assessment results are available at http://ahsoka.ustrasbg.fr/rnapuzzles/.

Original languageEnglish (US)
Pages (from-to)655-672
Number of pages18
Issue number5
StatePublished - May 2017

All Science Journal Classification (ASJC) codes

  • Molecular Biology


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