Rna Tertiary Structure
Rna Tertiary Structure - Related Videos
01:23
RNA Structure
0 Views •
2019
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...
01:23
RNA Structure
0 Views •
2020
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...
01:19
RNA Structure
0 Views •
2025
The basic structure of RNA consists of a string of ribonucleotides attached by phosphodiester bonds. 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) involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three...
13:41
Monitoring Equilibrium Changes in RNA Structure by 'Peroxidative' and 'Oxidative' Hydroxyl Radical Footprinting
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Cited by 4 •
2011
This protocol describes how to quantify the Mg(II)-dependent formation of RNA tertiary structure by two methods of hydroxyl radical footprinting.
13:42
RNA Secondary Structure Prediction Using High-throughput SHAPE
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Cited by 16 •
2013
High-throughput selective 2' hydroxyl acylation analyzed by primer extension (SHAPE) utilizes a novel chemical probing technology, reverse transcription, capillary electrophoresis and secondary structure prediction software to determine the structures of RNAs from several hundred to several thousand nucleotides at single nucleotide resolution.
FAQs
Magnesium ions help stabilize folded RNA by neutralizing negative charges along the phosphate backbone. This charge compensation supports close approach between distant regions of the molecule, allowing long-range contacts and other stabilizing interactions to form. Because these ions influence the final three-dimensional arrangement, magnesium binding can affect whether an RNA adopts a functional folded state.
Base stacking places aromatic nucleobases against one another, while noncanonical base pairing creates hydrogen-bonded contacts that differ from standard Watson-Crick pairs. Together with additional hydrogen bonds, these interactions connect regions that may be far apart in the sequence. Their combined effect helps maintain a compact architecture capable of specific molecular recognition or catalytic activity.
Secondary structure describes local stems, loops, and paired regions, but tertiary structure establishes contacts among those elements in three dimensions. A loop can interact with a distant helix, or separate regions can pack through stacking and hydrogen bonding. These higher-order arrangements determine the spatial features that allow an RNA to recognize molecules, catalyze reactions, or regulate gene expression.
Long-range contacts link RNA segments that are separated in the primary sequence or in the secondary-structure diagram. Such connections help organize the molecule into a stable three-dimensional framework rather than a collection of independent local elements. They are especially important when the folded RNA must create a precise site for molecular recognition, catalysis, or assembly into a larger complex.
Biological studies examine how sequence, secondary-structure elements, base stacking, noncanonical pairing, hydrogen bonding, long-range contacts, and metal-ion binding produce a functional RNA fold. This structural perspective connects molecular interactions with biological outcomes, including recognition, catalysis, regulation, and complex assembly. It also provides a basis for investigating how altered folding may affect RNA activity.
Ribozymes, riboswitches, viral genomes, and RNA-based therapeutics are important research contexts for three-dimensional RNA folding. In ribozymes, structure supports catalytic reactions; in riboswitches, it contributes to gene-expression regulation. Viral RNA and therapeutic designs also motivate structural analysis because folding can influence recognition, activity, and integration into larger biological systems.
Computational models of RNA folding aim to represent how local structures become organized through long-range contacts, noncanonical pairing, stacking, hydrogen bonding, and metal-ion interactions. Including these factors helps models move beyond sequence or secondary-structure descriptions toward three-dimensional predictions. Such modeling supports research on RNA function, ribozymes, riboswitches, viral genomes, and therapeutic applications.