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Related Concept Videos

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,...
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...
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...
Cotranslational Protein Translocation01:20

Cotranslational Protein Translocation

Translocation of proteins across membranes is an ancient process that occurs even in bacteria and archaebacteria. In fact, the components of the translocation machinery are still conserved between prokaryotes and eukaryotes.
Sec61 channel partners for cotranslational translocation
During cotranslational translocation, the Sec61 channel partners with the signal recognition particle (SRP), the signal recognition particle receptor (SR), and the ribosomes to transport the nascent polypeptide chain...
Translation01:31

Translation

Lesson: Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life

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Quantitative Immunofluorescence to Measure Global Localized Translation
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[Translational research: an interpretation].

Reinaldo Guimarães1

  • 1Associação Brasileira das Indústrias de Química Fina, Biotecnologia e suas Especialidades (ABIFINA). Av. Churchill 129/1102, Centro. 20020-050 Rio de Janeiro RJ. reinaldo.guimaraes47@gmail.com

Ciencia & Saude Coletiva
|June 12, 2013
PubMed
Summary
This summary is machine-generated.

Translational Research (TR) is a critical 21st-century health research focus, originating in the US and expanding globally. Its emergence is linked to pharmaceutical industry needs and US scientific policy, though its future conceptualization remains uncertain.

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Area of Science:

  • Biomedical and Health Sciences
  • Health Services Research
  • Science Policy

Background:

  • Translational Research (TR) has emerged as a pivotal area in contemporary health research.
  • Originating in the United States, TR has rapidly gained global traction in both developed and developing nations.
  • The study explores the definition, scope, and emergent factors of TR in the 21st century.

Observation:

  • The article explores the definition, scope, and emergence of TR in the contemporary US context.
  • It analyzes the connection between TR and foundational US scientific policies post-World War II.
  • The pharmaceutical industry's crisis, linked to genomic/post-genomic output challenges, is identified as a driver for US government intervention in biomedical research via the NIH.

Findings:

  • TR's future trajectory is difficult to predict, potentially due to an underdeveloped conceptual and theoretical framework.
  • Opportunities and potential for TR in emerging innovative systems, like Brazil's, are discussed.
  • A universal health system may facilitate TR by addressing societal demands for health innovation.

Implications:

  • Understanding the drivers and challenges of TR is crucial for optimizing biomedical research investment.
  • TR's development has significant implications for national innovative systems and global health equity.
  • Policy interventions, like universal healthcare, could be leveraged to foster innovation and address societal health needs through research.