DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: A small RNA that cooperatively senses two stacked metabolites in one pocket for gene control

Journal Article · · Nature Communications

Riboswitches are structured non-coding RNAs often located upstream of essential genes in bacterial messenger RNAs. Such RNAs regulate expression of downstream genes by recognizing a specific cellular effector. Although nearly 50 riboswitch classes are known, only a handful recognize multiple effectors. Here, we report the 2.60-Å resolution co-crystal structure of a class I type I preQ1-sensing riboswitch that reveals two effectors stacked atop one another in a single binding pocket. These effectors bind with positive cooperativity in vitro and both molecules are necessary for gene regulation in bacterial cells. Stacked effector recognition appears to be a hallmark of the largest subgroup of preQ1 riboswitches, including those from pathogens such as Neisseria gonorrhoeae. We postulate that binding to stacked effectors arose in the RNA World to closely position two substrates for RNA-mediated catalysis. These findings expand known effector recognition capabilities of riboswitches and have implications for antimicrobial development.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL); University of Rochester, NY (United States). School of Medicine
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Biological and Environmental Research (BER); National Institutes of Health (NIH); Elon Huntington Hooker Graduate Fellowship
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1903961
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 13; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

References (64)

Evidence for Pseudoknot Formation of Class I preQ1Riboswitch Aptamers journal May 2009
The potential versatility of RNA catalysis journal May 2021
Exact Analysis of Competition Ligand Binding by Displacement Isothermal Titration Calorimetry journal January 2000
Crystallographic Analysis of Small Ribozymes and Riboswitches book January 2012
Isolation and characterization of an Escherichia coli mutant lacking tRNA-guanine transglycosylase. Function and biosynthesis of queuosine in tRNA. journal June 1982
Genetic Control by a Metabolite Binding mRNA journal September 2002
Structure and function of preQ1 riboswitches journal October 2014
Biosynthesis of pyrrolopyrimidines journal August 2012
Structural, Functional, and Taxonomic Diversity of Three PreQ1 Riboswitch Classes journal July 2014
The Structure of the Guanidine-II Riboswitch journal June 2017
Inference of Macromolecular Assemblies from Crystalline State journal September 2007
Structural Insights into Riboswitch Control of the Biosynthesis of Queuosine, a Modified Nucleotide Found in the Anticodon of tRNA journal March 2009
Structural Insights into Ligand Recognition by a Sensing Domain of the Cooperative Glycine Riboswitch journal December 2010
The Structure of a Tetrahydrofolate-Sensing Riboswitch Reveals Two Ligand Binding Sites in a Single Aptamer journal October 2011
Geometric nomenclature and classification of RNA base pairs journal April 2001
pytc: Open-Source Python Software for Global Analyses of Isothermal Titration Calorimetry Data journal April 2018
Coupling Green Fluorescent Protein Expression with Chemical Modification to Probe Functionally Relevant Riboswitch Conformations in Live Bacteria journal April 2018
Differential Binding Models for Direct and Reverse Isothermal Titration Calorimetry journal February 2016
Imaginary Ribozymes journal July 2020
Possible anticodon sequences of tRNAHis, tRNAAsn, and tRNAAsp from Escherichia coli. Universal presence of nucleoside O in the first position of the anticodons of these transfer ribonucleic acid journal January 1972
Mg2+ Shifts Ligand-Mediated Folding of a Riboswitch from Induced-Fit to Conformational Selection journal October 2015
Molecular Mechanism of preQ 1 Riboswitch Action: A Molecular Dynamics Study journal October 2012
Structures of riboswitch RNA reaction states by mix-and-inject XFEL serial crystallography journal November 2016
Structure of a class II preQ1 riboswitch reveals ligand recognition by a new fold journal April 2013
c-di-AMP binds the ydaO riboswitch in two pseudo-symmetry–related pockets journal August 2014
Structural insights into recognition of c-di-AMP by the ydaO riboswitch journal August 2014
The Shine-Dalgarno sequence of riboswitch-regulated single mRNAs shows ligand-dependent accessibility bursts journal January 2016
Cocrystal structure of a class I preQ1 riboswitch reveals a pseudoknot recognizing an essential hypermodified nucleobase journal February 2009
The glmS riboswitch integrates signals from activating and inhibitory metabolites in vivo journal February 2011
A riboswitch selective for the queuosine precursor preQ1 contains an unusually small aptamer domain journal March 2007
Synthetic ligands for PreQ1 riboswitches provide structural and mechanistic insights into targeting RNA tertiary structure journal April 2019
Real-time monitoring of single ZTP riboswitches reveals a complex and kinetically controlled decision landscape journal September 2020
A natural riboswitch scaffold with self-methylation activity journal June 2021
SciPy 1.0: fundamental algorithms for scientific computing in Python journal February 2020
Ultraviolet Shadowing of RNA Can Cause Significant Chemical Damage in Seconds journal July 2012
Structural analysis of a class III preQ 1 riboswitch reveals an aptamer distant from a ribosome-binding site regulated by fast dynamics journal June 2015
Discovery of novel bacterial queuine salvage enzymes and pathways in human pathogens journal September 2019
The Structural Basis for Recognition of the PreQ 0 Metabolite by an Unusually Small Riboswitch Aptamer Domain journal March 2009
Comparison of a PreQ 1 Riboswitch Aptamer in Metabolite-bound and Free States with Implications for Gene Regulation journal May 2011
Nucleobase mutants of a bacterial preQ 1 -II riboswitch that uncouple metabolite sensing from gene regulation journal October 2019
Superior cellular activities of azido- over amino-functionalized ligands for engineered preQ1riboswitches inE.coli journal October 2018
Analysis of a preQ1-I riboswitch in effector-free and bound states reveals a metabolite-programmed nucleobase-stacking spine that controls gene regulation journal June 2020
Site-specific modification of Shigella flexneri virF mRNA by tRNA-guanine transglycosylase in vitro journal June 2007
Single transcriptional and translational preQ1 riboswitches adopt similar pre-folded ensembles that follow distinct folding pathways into the same ligand-bound structure journal September 2013
Riboswitches and the RNA World journal November 2010
Riboswitches and Translation Control journal May 2018
Web-Ice : integrated data collection and analysis for macromolecular crystallography journal January 2008
New paradigm for macromolecular crystallography experiments at SSRL: automated crystal screening and remote data collection journal November 2008
XDS journal January 2010
PHENIX: a comprehensive Python-based system for macromolecular structure solution journal January 2010
Overview of the CCP 4 suite and current developments journal March 2011
Blu-Ice and the Distributed Control System : software for data acquisition and instrument control at macromolecular crystallography beamlines journal November 2002
Tandem Riboswitch Architectures Exhibit Complex Gene Control Functions journal October 2006
Direct Observation of Cotranscriptional Folding in an Adenine Riboswitch journal October 2012
A Novel Class of Modular Transporters for Vitamins in Prokaryotes journal October 2008
Complete Genome Sequence of Hemolysin-Containing Carnobacterium sp. Strain CP1 Isolated from the Antarctic journal August 2016
In Vivo Behavior of the Tandem Glycine Riboswitch in Bacillus subtilis journal October 2017
A Subspace, Interior, and Conjugate Gradient Method for Large-Scale Bound-Constrained Minimization Problems journal January 1999
Bayesian Regularization and Pruning Using a Laplace Prior journal January 1995
Riboswitch diversity and distribution journal April 2017
Structural basis for ligand binding to the guanidine-II riboswitch journal June 2017
Crystal structure of a c‐di‐ AMP riboswitch reveals an internally pseudo‐dimeric RNA journal September 2014
Queuosine‐modified tRNAs confer nutritional control of protein translation journal August 2018
The Escherichia coli COG1738 Member YhhQ Is Involved in 7-Cyanodeazaguanine (preQ0) Transport journal February 2017