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Related Experiment Video

Updated: May 17, 2026

Isolation and Fluorescence Imaging for Single-particle Reconstruction of Chlamydomonas Centrioles

Isolation and Fluorescence Imaging for Single-particle Reconstruction of Chlamydomonas Centrioles

Published on: September 21, 2018

The amorphous pericentriolar cloud takes shape.

¹Cell and Developmental Biology Programme, Institute for Research in Biomedicine, Baldiri i Reixac 10, 08028 Barcelona, Spain. jens.luders@irbbarcelona.org

Nature Cell Biology

|November 8, 2012

Summary

The centrosome's pericentriolar material (PCM) is not an amorphous cloud but has distinct internal organization. Super-resolution microscopy reveals a structured domain organization within the PCM.

Area of Science:

Cell Biology
Microscopy
Molecular Biology

Background:

The centrosome is a key microtubule-organizing center in animal cells.
Pericentriolar material (PCM) surrounds centrosomal centrioles and is essential for microtubule nucleation.
Traditionally, PCM has been viewed as an unstructured protein matrix.

Purpose of the Study:

To investigate the structural organization of the pericentriolar material (PCM).
To challenge the long-held view of PCM as an amorphous matrix.
To characterize the domain organization within the PCM using advanced imaging techniques.

Main Methods:

Super-resolution microscopy techniques were employed.
High-resolution imaging was used to visualize PCM components.

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Isolation and Fluorescence Imaging for Single-particle Reconstruction of Chlamydomonas Centrioles

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Analysis focused on the spatial arrangement of proteins within the PCM.

Main Results:

Evidence for remarkable domain organization within the PCM was revealed.
The PCM is not a homogeneous, unstructured cloud.
Specific protein domains and their arrangement within the PCM were identified.

Conclusions:

The traditional view of PCM as an amorphous matrix is outdated.
The PCM exhibits significant internal structural organization.
Understanding PCM domain organization is crucial for comprehending centrosome function.