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| Status |
Public on Apr 08, 2014 |
| Title |
Holocentromeres are dispersed point centromeres localized at transcription factor hotspots |
| Organism |
Caenorhabditis elegans |
| Experiment type |
Genome binding/occupancy profiling by high throughput sequencing
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| Summary |
The centromere is a defining feature of eukaryotic chromosomes and is essential for the segregation of chromosomes during cell division. Centromeres are universally marked by the histone variant cenH3 and are restricted to specialized chromatin that most commonly localized to a single position along the chromosome. However, the DNA on which centromeric nucleosomes assemble is not conserved and varies greatly in size and composition. It ranges from genetically defined point centromeres that assemble a single cenH3-containing nucleosome to epigenetically defined regional centromeres embedded in megabases of tandemly repeated DNA to holocentromeres that extend along the length of the entire chromosomes. The organization of regional and holocentric centromeres has so far been elusive, as the precise locations of cenH3-containing sequences could not be determined. Our results show that the point centromere is the basic unit of holocentromeres and provide a basis for understanding how centromeric chromatin is maintained.
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| Overall design |
We use high-resolution mapping of cenH3-associated DNA to show that Caenorhabditids elegans holocentromeres are organized as dispersed but discretely localized point centromeres.
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| Contributor(s) |
Steiner FA, Henikoff S |
| Citation(s) |
24714495 |
| Submission date |
Feb 19, 2013 |
| Last update date |
May 15, 2019 |
| Contact name |
Jorja Henikoff |
| E-mail(s) |
jorja@fhcrc.org
|
| Phone |
206-667-4850
|
| Organization name |
Fred Hutchinson Cancer Research Center
|
| Department |
Basic Sciences
|
| Lab |
Henikoff
|
| Street address |
1100 Fairview AV N, A1-162
|
| City |
Seattle |
| State/province |
WA |
| ZIP/Postal code |
98109-1024 |
| Country |
USA |
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| Platforms (2) |
| GPL13657 |
Illumina HiSeq 2000 (Caenorhabditis elegans) |
| GPL18245 |
Illumina HiSeq 2500 (Caenorhabditis elegans) |
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| Samples (19)
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| Relations |
| BioProject |
PRJNA191143 |
| SRA |
SRP018884 |
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