Related Experiment Video
Updated: Mar 27, 2026
09:14
Super-Resolution Microscopy of the Synaptonemal Complex Within the Caenorhabditis elegans Germline
Published on: September 13, 2022
3.2K
Structure and function of the synaptonemal complex.
1Department of Biology, Johns Hopkins University, Baltimore, MD, USA.
The Journal of Cell Biology
|March 25, 2026
Summary
The synaptonemal complex (SC) is a crucial meiotic protein structure. Recent research reveals its dynamic role in coordinating chromosome recombination and segregation, ensuring faithful inheritance.
Area of Science:
- Cell Biology
- Genetics
- Molecular Biology
Background:
- The synaptonemal complex (SC) is a key protein structure in meiosis, essential for homologous chromosome pairing.
- Historically considered a static scaffold, the SC is now understood as a dynamic platform regulating meiotic events.
Purpose of the Study:
- To review recent advancements in understanding the structure and function of the synaptonemal complex.
- To highlight conserved features and regulatory mechanisms of the SC in meiosis.
Main Methods:
- Review of diverse complementary approaches.
- Analysis of SC components and their interactions.
- Examination of structural organization and molecular modules.
Main Results:
- Expanded catalog of SC components and their interaction networks.
- Identified conserved structural organization and ancient molecular modules.
- Demonstrated SC's role in coupling structure to crossover regulation.
- Revealed SC's feedback mechanisms controlling DNA break formation and repair.
Conclusions:
- The SC is a dynamic signaling platform crucial for accurate chromosome segregation during meiosis.
- Conserved structural elements and feedback mechanisms ensure faithful transmission of genetic material across generations.
Related Concept Videos
02:20Cohesins
5.9K
Cohesin protein complexes are a molecular glue that holds two sister chromatids together. They play an important role both in mitosis and meiosis. In mitosis, all cohesin complexes present on the chromosomes are removed before the start of the anaphase stage.
Cohesin complexes in Meiotic Division
Meiosis involves two distinct rounds of chromosomal segregation and cell divisions— Meiosis I followed by Meiosis II – producing four daughter cells. Meiosis I includes the separation of...
Cohesin complexes in Meiotic Division
Meiosis involves two distinct rounds of chromosomal segregation and cell divisions— Meiosis I followed by Meiosis II – producing four daughter cells. Meiosis I includes the separation of...
5.9K
02:20Cohesins
2.5K
2.5K
02:15Condensins
4.9K
Condensins are large protein complexes that use ATP to fuel the assembly of chromosomes during mitosis. They transform the tangled, shapeless mass of post-interphase DNA into individualized chromosomes by compacting, organizing, and segregating chromosomal DNA.
The plant and animal cells contain two types of condensin complexes—condensin I and condensin II. Both complexes have five subunits: two SMC (Structural Maintenance of Chromosomes) subunits, a kleisin subunit, and two HEAT-repeat...
The plant and animal cells contain two types of condensin complexes—condensin I and condensin II. Both complexes have five subunits: two SMC (Structural Maintenance of Chromosomes) subunits, a kleisin subunit, and two HEAT-repeat...
4.9K
02:15Condensins
2.2K
2.2K
01:32Assembly of Complex Microtubule Structures
2.8K
Complex microtubule structures are present in resting cells and in dividing cells. In resting cells, they are responsible for maintaining the cellular architecture, tracks for intracellular transport, positioning of organelles, assembly of cilia and flagella. They mediate the bipolar spindle assembly for chromosomal segregation and positioning of the cell division plate in dividing cells. The formation of microtubule complex structures depends on the cell type, cell stage, and cell function.
2.8K
02:57Attachment of Sister Chromatids
4.2K
As cells progress into mitosis, the nuclear envelope breaks down, and the condensed chromosomes are exposed to the array of bipolar microtubules of the mitotic spindle. The kinetochore, a large, disc-shaped protein complex, is present at the centromere region of the sister chromatids and acts as a binding site for the microtubules. Usually, the plus-end of a single microtubule is embedded within the kinetochore. However, some kinetochores first establish lateral contact with the side-wall...
4.2K