Structure and Function of Large RNAs

Many cellular processes are catalyzed and regulated by large, highly structured noncoding RNA molecules.  Our laboratory is interested in the tertiary structures of large RNA molecules that control RNA splicing, transcription, and viral pathogenicity.  We use a combination of biochemistry, cell biology and crystallography to monitor the architectural states of large RNAs and to understand the link between their molecular structure and function in biology.  We recently solved the structure of a self-splicing group II intron (one of the largest ribozymes in nature), and we are now using similar techniques to determine the tertiary structure of lincRNAs, viral RNAs, and other RNAs that play a central role in gene expression.

Structure and RNA folding kinetics of group II introns.

Relevant Publications

The group II intron maturase: a reverse transcriptase and splicing factor go hand in hand
Chen Zhao and Anna Marie Pyle
Curr Opin Struct Biol. 2017 (47) : 30-39
Visualizing the secondary and tertiary architectural domains of lncRNA RepA
Fei Liu, Srinivas Somarowthu and Anna Marie Pyle
Nature Chemical Biology 2017 (Epub ahead of print) :
Inverted repeat Alu elements in the human lincRNA-p21 adopt a conserved secondary structure that regulates RNA function
Isabel Chillon and Anna Marie Pyle
Nucleic Acids Res. 2016 (44) : 9462-9471
Crystal structure of group II intron domain 1 reveals a template for RNA assembly
Chen Zhao, K.R. Rajashankar, Marco Marcia and Anna Marie Pyle
Nature Chemical Biology 2015 (11) : 967-972
Native Purification and Analysis of Long RNAs
Isabel Chillón Gazquez, Marco Marcia, Michal Legiewicz, Fei Liu, Srinivas Somarowthu and Anna Marie Pyle
Methods in Enzymology 2015 (558) : 3-37
HOTAIR forms an intricate and modular secondary structure
Srinivas Somarowthu, Michal Legiewicz, Isabel Chillón Gazquez, Marco Marcia, Fei Liu and Anna Marie Pyle
Mol Cell 2015 (58) : 353-361
Rediscovering RNA
Anna Marie Pyle
RNA 2015 (21) : 714-715
Principles of ion recognition in RNA: insights from the group II intron structures
Marco Marcia and Anna Marie Pyle
RNA 2014 (20) : 516-27
Visualizing the ai5γ group IIB intron
Srinivas Somarowthu, Michal Legiewicz, Kevin S. Keating and Anna Marie Pyle
Nucleic Acids Res. 2013 (42) : 1947-58
Visualizing group II intron catalysis through the stages of splicing
Marco Marcia and Anna Marie Pyle
Cell 2012 (151) : 497-507
The brace for a growing scaffold: Mss116 protein promotes RNA folding by stabilizing an early assembly intermediate
Olga Fedorova and Anna Marie Pyle
J Mol Biol. 2012 (422) : 347-365
The molecular interactions that stabilize RNA tertiary structure: RNA motifs, patterns, and networks
Samuel E. Butcher, Anna Marie Pyle
Acc Chem Res. 2011 (44) : 1302-1311