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Related Concept Videos

Improving Translational Accuracy02:07

Improving Translational Accuracy

Base complementarity between the three base pairs of mRNA codon and the tRNA anticodon is not a failsafe mechanism. Inaccuracies can range from a single mismatch to no correct base pairing at all. The free energy difference between the correct and nearly correct base pairs can be as small as 3 kcal/ mol. With complementarity being the only proofreading step, the estimated error frequency would be one wrong amino acid in every 100 amino acids incorporated. However, error frequencies observed in...
Improving Translational Accuracy02:07

Improving Translational Accuracy

Base complementarity between the three base pairs of mRNA codon and the tRNA anticodon is not a failsafe mechanism. Inaccuracies can range from a single mismatch to no correct base pairing at all. The free energy difference between the correct and nearly correct base pairs can be as small as 3 kcal/ mol. With complementarity being the only proofreading step, the estimated error frequency would be one wrong amino acid in every 100 amino acids incorporated. However, error frequencies observed in...
Post-translational Translocation of Proteins to the RER01:27

Post-translational Translocation of Proteins to the RER

A sizable fraction of proteins destined for ER are first synthesized in the cell cytosol and then transported across the ER membrane–a process called post-translational translocation. Similar to cotranslationally translocated proteins, these proteins also use the Sec translocon complex to enter the ER lumen.
Targeting proteins to the ER
Hsp40 and Hsp70 chaperone molecules bind the translated proteins in the cytosol to prevent their folding. The chaperone binding helps to keep the signal...
Leaky Scanning02:28

Leaky Scanning

During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA.  Marilyn Kozak discovered that the sequence RCCAUGG (where R stands for...
Translational Regulation01:29

Translational Regulation

Translational regulation in prokaryotes ensures efficient protein synthesis by controlling ribosome access to mRNA. This regulation is mediated by secondary RNA structures, including translational riboswitches, RNA thermometers, and small RNAs (sRNAs), which respond to intracellular and environmental signals to modulate gene expression.Translational RiboswitchesRiboswitches in the leader region of mRNAs can regulate translation by altering the accessibility of the Shine-Dalgarno (SD) sequence,...
Genetic Lingo01:11

Genetic Lingo

Overview

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Updated: Jun 28, 2026

A Web Tool for Generating High Quality Machine-readable Biological Pathways
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A Web Tool for Generating High Quality Machine-readable Biological Pathways

Published on: February 8, 2017

Semiotic web for translational medicine.

Arkalgud Ramaprasad1, Vipul Kashyap

  • 1University of Illinois at Chicago, Chicago, IL, USA.

AMIA ... Annual Symposium Proceedings. AMIA Symposium
|November 13, 2008
PubMed
Summary

The semiotic web extends the semantic web for translational medicine. It uses a three-dimensional ontology to map all 32 possible functions for advancing research.

Area of Science:

  • * Information science and biomedical informatics.
  • * Focuses on the application of semiotics in translational medicine.

Background:

  • * The semantic web has revolutionized data integration and knowledge representation.
  • * Translational medicine requires advanced frameworks for complex data interactions.

Purpose of the Study:

  • * To introduce and define the semiotic web as a generalization of the semantic web.
  • * To present a functional ontology for the semiotic web tailored for translational medicine.

Main Methods:

  • * Developed a simple ontology based on three dimensions: semiotic steps, semiotic processes, and research types.
  • * The ontology encompasses four steps of semiotics, two processes in semiotics, and four types of research.
  • * Systematically combined these dimensions to define the web's functional scope.

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Main Results:

  • * Identified and categorized 32 distinct combinations representing the functions of the semiotic web.
  • * These combinations provide a comprehensive framework for understanding semiotic web applications.
  • * The ontology offers a structured approach to managing and utilizing semiotic data in medicine.

Conclusions:

  • * The semiotic web provides a robust conceptual model for translational medicine.
  • * The proposed ontology effectively maps the functional landscape of the semiotic web.
  • * This framework facilitates enhanced data interpretation and knowledge discovery in biomedical research.