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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...
Multi-species Conserved Sequences02:51

Multi-species Conserved Sequences

Next-generation sequencing technologies have created large genomic databases of a variety of animals and plants. Ever since the human genome project was completed, scientists studied the genome of primates, mammals, and other phylogenetically distant living beings. Such large-scale  studies have provided new insights into the evolutionary relationship between organisms.
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved DNA...
Conserved Binding Sites01:49

Conserved Binding Sites

Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
Conservation of Protein Domains Over Different Proteins02:26

Conservation of Protein Domains Over Different Proteins

Protein domains are small structurally independent units that are part of a single amino acid chain.  Although these domains are often structurally independent, they may rely on synergistic effects to perform their functions as part of a larger protein. Protein domains may be conserved within the same organism, as well as across different organisms.
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to form...
Conservation of Protein Domains02:26

Conservation of Protein Domains

Protein domains are small structurally independent units that are part of a single amino acid chain.  Although these domains are often structurally independent, they may rely on synergistic effects to perform their functions as part of a larger protein. Protein domains may be conserved within the same organism, as well as across different organisms.
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to form...

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Related Experiment Videos

Preserving predictive information under biologically plausible compression.

Sylvia C L Durian1, Kyle Bojanek1, Olivier Marre2

  • 1Department of Organismal Biology and Anatomy, University of Chicago, Chicago, IL 60637, USA.

PNAS Nexus
|July 6, 2026
PubMed
Summary
This summary is machine-generated.

Researchers explored how the brain preserves information during neural compression. They found that compressing retinal inputs for prediction enables downstream neurons to forecast future events effectively.

Keywords:
downstream readoutinformation theorynatural scenespopulation codingprediction

Related Experiment Videos

Area of Science:

  • Neuroscience
  • Computational Neuroscience
  • Information Theory

Background:

  • Retinal ganglion cells exhibit high convergence, creating a challenge for information transfer to downstream neurons.
  • Neural processing involves compression, but the computational principles guiding this compression are not fully understood.

Purpose of the Study:

  • To investigate how information is preserved through neural compression, particularly in the context of prediction.
  • To compare compression methods that prioritize predictive information with standard neural compression frameworks.

Main Methods:

  • The study focused on prediction as a core neural computation.
  • Compared different compression strategies for retinal inputs, evaluating their impact on downstream predictive accuracy.

Main Results:

  • Compressing retinal inputs to optimize for predictive computations significantly improved the ability of downstream neurons to predict future events.
  • This predictive compression framework demonstrated near-optimal performance across natural scenes.

Conclusions:

  • Optimal predictive coding is a viable strategy for information preservation in compressed neural representations.
  • The proposed framework may offer insights into information maintenance in other sensory systems and under various compression scenarios.