Related Experiment Video
Updated: Jul 5, 2025
10:34
Probing RNA Structure with Dimethyl Sulfate Mutational Profiling with Sequencing In Vitro and in Cells
Published on: December 9, 2022
4.2K
sRNA Structural Modeling Based on NMR Data.
Pengzhi Wu1,2, Lingna Yang3
1Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, People's Republic of China. pengzhi.wu@bc.biol.ethz.ch.
Methods in Molecular Biology (Clifton, N.J.)
|January 13, 2024
Summary
This study presents a new method for modeling small non-coding RNA (sRNA) structures using sparse nuclear magnetic resonance (NMR) data. The SimRNA approach enhances structural details for gene regulation research.
Area of Science:
- Molecular biology
- Structural biology
- Biophysics
Background:
- Small non-coding RNAs (sRNAs) are critical regulators of gene expression and RNA interference pathways.
- Accurate three-dimensional structures of sRNAs are essential for understanding their molecular mechanisms and developing therapeutic strategies.
- Nuclear magnetic resonance (NMR) spectroscopy is a key technique for RNA structure determination, but high-resolution data can be challenging to obtain for sRNAs.
Purpose of the Study:
- To present a computational protocol for the structural modeling of sRNAs.
- To integrate sparse NMR constraints with the SimRNA method for enhanced structural accuracy.
- To demonstrate the protocol's effectiveness using the DsrA sRNA second stem-loop as a case study.
Main Methods:
- Utilized the SimRNA computational method for RNA structural modeling.
- Incorporated sparse nuclear magnetic resonance (NMR) data as constraints.
- Applied the protocol to model the structure of the second stem-loop of DsrA sRNA.
Main Results:
- Successfully generated structural models of sRNA using limited NMR data.
- Demonstrated the feasibility of combining SimRNA with sparse NMR constraints.
- Provided examples of NMR spectra and corresponding modeled RNA structures for validation.
Conclusions:
- The SimRNA method, when guided by sparse NMR constraints, is effective for modeling sRNA structures.
- This approach can provide valuable structural insights when high-resolution NMR data is limited.
- The protocol facilitates a deeper understanding of sRNA molecular mechanisms and aids in the development of RNA-based therapeutics.
Related Concept Videos
01:23RNA Structure
71.5K
Overview
The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
71.5K
01:25Nucleic Acid Structure
6.1K
The pentose sugar in DNA is deoxyribose, while in RNA the pentose sugar is ribose. The difference between the sugars is the presence of the hydroxyl group on the ribose's second carbon and a hydrogen on the deoxyribose's second carbon. The phosphate residue attaches to the hydroxyl group of the 5′ carbon of one sugar and the hydroxyl group of the 3′ carbon of the sugar of the next nucleotide, which forms a 5′ to 3′ phosphodiester linkage.
DNA Structure
DNA...
DNA Structure
DNA...
6.1K
02:00Molecular Models
38.4K
Physical models representing molecular architectures of chemical compounds play essential roles in understanding chemistry. The use of molecular models makes it easier to visualize the structures and shapes of atoms and molecules.
38.4K
01:24Protein Organization
6.5K
Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular transport, catalysis, and structural support. Proteins have a hierarchical structure comprising at least three levels of organization: primary, secondary, and tertiary structure. Some large proteins have a quaternary structure where individual protein subunits are linked together.
The primary structure of a protein is its amino acid sequence....
The primary structure of a protein is its amino acid sequence....
6.5K
01:07Nuclear Magnetic Resonance (NMR): Overview
2.5K
Nuclear magnetic resonance (NMR) is a phenomenon exhibited by certain nuclei that can absorb characteristic radio frequency radiation under certain conditions. NMR has been extensively applied in molecular spectroscopy and medical diagnostic imaging. In both these applications, the molecule or subject under study is placed in a magnetic field and irradiated with radio frequency energy.
NMR spectroscopy generates a spectrum where the characteristic absorption frequencies of the sample are...
NMR spectroscopy generates a spectrum where the characteristic absorption frequencies of the sample are...
2.5K
01:15¹H NMR of Conformationally Flexible Molecules: Variable-Temperature NMR
1.1K
The axial and equatorial protons in cyclohexane can be distinguished by performing a variable-temperature NMR experiment. In this process, except for one proton, the remaining eleven protons are replaced by deuterium. The deuterium substitution avoids the possible peak splitting caused by the spin-spin coupling between the adjacent protons. The remaining proton flips between the axial and equatorial positions.
1.1K