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Related Concept Videos

Visual System01:26

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Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
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Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round...
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Related Experiment Video

Updated: Jan 30, 2026

Purification of Ubiquitinated p53 Proteins from Mammalian Cells
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Visualizing ubiquitination in mammalian cells.

Sjoerd Jl van Wijk1, Simone Fulda2,3,4, Ivan Dikic5,6

  • 1Institute for Experimental Cancer Research in Paediatrics, Goethe University, Frankfurt am Main, Germany s.wijk@kinderkrebsstiftung-frankfurt.de heilemann@chemie.uni-frankfurt.de.

EMBO Reports
|January 23, 2019
PubMed
Summary

This study reviews microscopy techniques for visualizing protein ubiquitination, essential for cell biology. Future methods will enable quantitative super-resolution imaging of ubiquitin chains and E3 ligase complexes.

Keywords:
LUBACOTULINSalmonellasuper‐resolution microscopyubiquitination

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Area of Science:

  • Cell Biology
  • Biochemistry
  • Microscopy

Background:

  • Protein ubiquitination is a dynamic post-translational modification crucial for numerous cellular processes in mammals.
  • Traditional studies relied on genetic and biochemical methods, limiting in vivo visualization.
  • Understanding ubiquitination dynamics is key to deciphering protein regulation and cellular function.

Purpose of the Study:

  • To provide an overview of recent advancements in microscopy-based imaging of protein ubiquitination.
  • To discuss available reagents and technologies for visualizing ubiquitination in cells.
  • To highlight the role of ubiquitination in processes like antibacterial autophagy and inflammatory signaling.

Main Methods:

  • Review of direct and indirect imaging techniques for ubiquitination.
  • Application of confocal fluorescence microscopy and super-resolution microscopy.
  • Analysis of differentially linked ubiquitin chains in fixed and living cells.

Main Results:

  • Significant progress has been made in visualizing ubiquitin chains using advanced microscopy.
  • Confocal and super-resolution microscopy allow detailed observation of ubiquitination events.
  • Ubiquitin's role in antibacterial autophagy and pro-inflammatory signaling pathways has been elucidated through imaging.

Conclusions:

  • Microscopy offers powerful tools to study ubiquitination dynamics in cellular contexts.
  • Future research will likely shift towards quantitative super-resolution microscopy.
  • This transition will enhance understanding of ubiquitination, E3 ligase complex formation, and their distribution in native cellular environments.