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Related Concept Videos

RNA Structure01:19

RNA Structure

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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.
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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.
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Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types.  Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
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Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in regulating gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
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DNA-Tethered RNA Polymerase for Programmable In vitro Transcription and Molecular Computation
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Defining the syntax for self-assembling RNA tertiary architectures.

Luc Jaeger1

  • 1Chemistry and Biochemistry Department, Biomolecular Science and Engineering Program, University of California, Santa Barbara, CA 93106-9510, USA. jaeger@chem.ucsb.edu

Nucleic Acids Symposium Series (2004)
|September 15, 2009
PubMed
Summary
This summary is machine-generated.

Researchers are deciphering RNA's structural language to design new RNA shapes. This RNA architectonics approach enables prediction and creation of functional RNA 3D structures for diverse applications.

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Area of Science:

  • Structural Biology
  • Computational Biology
  • Biochemistry

Background:

  • Stable RNAs exhibit modular, hierarchical 3D architectures.
  • Recurrent structural motifs drive RNA tertiary interactions.
  • Understanding RNA folding principles is key to predicting 3D shapes.

Purpose of the Study:

  • To decipher the proto-language of RNA folding and assembly.
  • To enable rational design and prediction of RNA 3D structures.
  • To explore RNA architectonics for creating novel functional RNA shapes.

Main Methods:

  • Comparative sequence and structural analysis of known RNA X-ray structures.
  • Gathering RNA folding and assembly principles.
  • Developing a proto-language for RNA structure.

Main Results:

  • A proto-language for RNA 3D shape generation has been established.
  • RNA architectonics principles have been defined.
  • The approach facilitates prediction of RNA tertiary structures.

Conclusions:

  • RNA architectonics offers a framework for understanding and designing RNA structures.
  • This approach has potential applications in nanotechnology, synthetic biology, and medicine.
  • Rational design of functional RNA shapes with self-assembly properties is achievable.