Study on RNA structure by pyrene-labeled 2'-O-methyloligoribonucleotides
1Department of Polymer Science and Engineering, Kyoto Institute of Technology, Japan.
Nucleic Acids Symposium Series
|April 26, 2000
Summary
Pyrene-labeled 2'-O-methyloligoribonucleotides (OMUpy) act as fluorescent probes to detect single-stranded RNA regions. Hybridization with complementary sequences significantly increases OMUpy fluorescence, enabling RNA structure analysis.
Area of Science:
- Molecular Biology
- Biochemistry
- Biophysics
Background:
- Investigating RNA secondary and tertiary structures is crucial for understanding gene regulation and function.
- Developing novel fluorescent probes can enhance the study of RNA structural dynamics.
Purpose of the Study:
- To investigate the properties of 2 -O-methyloligoribonucleotides containing 2 -O-(1-pyrenylmethyl)uridine as fluorescent probes.
- To assess the utility of these probes in identifying single-stranded regions within RNA secondary and tertiary structures.
Main Methods:
- Synthesis of pyrene-labeled 2 -O-methyloligoribonucleotides (OMUpy).
- Hybridization experiments with complementary oligoribonucleotides.
- Fluorescence spectroscopy to measure intensity changes.
- Application of OMUpy to E. coli 5S-rRNA to analyze its higher-order structure.
Main Results:
- OMUpy exhibited a significant 333-fold increase in fluorescence intensity at 375 nm upon hybridization with complementary oligoribonucleotides.
- Sequence-specific increases in fluorescence were observed when OMUpy was applied to E. coli 5S-rRNA, targeting loop or stem regions.
- The observed fluorescence intensity differences correlated with the higher-order structure of 5S-rRNA.
Conclusions:
- Pyrene-labeled 2 -O-methyloligoribonucleotides are effective fluorescent probes for detecting single-stranded RNA regions.
- OMUpy's fluorescence response is sequence-specific and sensitive to RNA higher-order structures.
- This probe technology holds promise for exploring RNA structure and dynamics.
Related Concept Videos
RNA Structure
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...
RNA Stability
Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
RNA Structure
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...
RNA Stability
Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
RNA Structure
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...
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...
Nucleic Acid Structure
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 has a double-helix structure. The...
DNA Structure
DNA has a double-helix structure. The...


