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Related Concept Videos

Protein Dynamics in Living Cells01:19

Protein Dynamics in Living Cells

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Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
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Ribosome Profiling02:24

Ribosome Profiling

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Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
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Protein Translocation Machinery on the ER Membrane01:28

Protein Translocation Machinery on the ER Membrane

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The translocon complex situated on the ER membrane is the main gateway for the protein secretory pathway. It facilitates the transport of nascent peptides into the ER lumen and their insertion into the ER membrane.
Sec61 protein conducting channel
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Directing Proteins to the Rough Endoplasmic Reticulum01:34

Directing Proteins to the Rough Endoplasmic Reticulum

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The organelle-specific signaling sequences direct proteins synthesized in the cytosol to their final destination like ER, mitochondria, peroxisomes, etc. Some of the proteins directed to ER are then trafficked via vesicles to other organelles within the cell or the extracellular environment through the Golgi complex. For example, the rough ER synthesizes soluble proteins for transportation to the lysosomes or secretion out of the cell. It can also synthesize transmembrane proteins that can...
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Post-translational Translocation of Proteins to the RER01:27

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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...
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Ribosomes01:27

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Updated: Apr 9, 2026

Single Molecule Fluorescence Energy Transfer Study of Ribosome Protein Synthesis
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Force-Forster Resonance Energy Transfer Correlation Microscopy: A Multimodal Approach for the Study of

Mariah Noggler1, Shawonur Rahaman2, Yuhong Wang2

  • 1Department of Biology and Biochemistry, University of Houston, Houston, Texas, USA.

Chembiochem : a European Journal of Chemical Biology
|April 8, 2026
PubMed
Summary
This summary is machine-generated.

This study introduces force-FRET correlation (FFC) microscopy, a novel multimodal technique. FFC microscopy achieves single-nucleotide resolution at the single-molecule level, overcoming limitations of existing methods for biomolecular research.

Keywords:
acoustic forcefluorescence resonance energy transferforce spectroscopymolecular rulerribosome translocation

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Dual DNA Rulers to Study the Mechanism of Ribosome Translocation with Single-Nucleotide Resolution
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Dual DNA Rulers to Study the Mechanism of Ribosome Translocation with Single-Nucleotide Resolution
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Area of Science:

  • Biophysics
  • Biochemistry
  • Single-molecule biophysics

Background:

  • Force spectroscopy and Förster resonance energy transfer (FRET) are essential biomolecular research tools.
  • Both techniques have limitations, including nonspecific binding interference (force spectroscopy) and lack of single-nucleotide resolution (FRET).

Purpose of the Study:

  • To develop a multimodal technique combining force spectroscopy and FRET for enhanced biomolecular analysis.
  • To achieve single-nucleotide resolution at the single-molecule level while eliminating nonspecific interactions.

Main Methods:

  • Developed force-FRET correlation (FFC) microscopy, a multimodal approach.
  • Utilized magnetic and fluorescent labeling with two distinct mechanical forces.
  • Achieved molecular specificity through removal of nonspecific interactions and force-FRET colocalization.
  • Employed precisely controlled acoustic forces for high molecular resolution.

Main Results:

  • Demonstrated single-nucleotide resolution at the single-molecule level.
  • Successfully eliminated interference from nonspecific interactions.
  • Applied FFC microscopy to study ribosome translocation, showcasing its capability for complex biological functions.
  • Achieved high molecular resolution and straightforward implementation.

Conclusions:

  • FFC microscopy offers a powerful new tool for biomolecular research.
  • The technique overcomes key limitations of traditional force spectroscopy and FRET.
  • FFC microscopy has broad potential applications in biochemistry and biophysics for investigating complex biological systems.