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| Status |
Public on Oct 16, 2019 |
| Title |
Distinct Roles for Condensin's Two ATPase Sites in Chromosome Condensation. |
| Organism |
Homo sapiens |
| Experiment type |
Other
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| Summary |
Condensin is a conserved SMC complex that uses its ATPase machinery to structure genomes, but how it does so is largely unknown. We show that condensin’s ATPase has a dual role in chromosome condensation. Mutation of one ATPase site impairs condensation, while mutating the second site results in hyperactive condensin that compacts DNA faster than wild type, both in vivo and in vitro. Whereas one site drives loop formation, the second site is involved in the formation of more stable higher-order Z loop structures. Using hyperactive condensin I, we reveal that condensin II is not intrinsically needed for the shortening of mitotic chromosomes. Condensin II rather is required for a straight chromosomal axis and enables faithful chromosome segregation by counteracting the formation of ultrafine DNA bridges. SMC complexes with distinct roles for each ATPase site likely reflect a universal principle that enables these molecular machines to intricately control chromosome architecture.
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| Overall design |
Hi-C was performed in control, Caph2KO, AS2LV, AS1LV, AS2LV/LV, SMC2WT/∆ and CAPH2KO-AS2LV cell lines in technical replicates.
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| Contributor(s) |
van der Weide RH, de Wit E |
| Citation(s) |
31629658 |
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| Submission date |
Jan 04, 2018 |
| Last update date |
Jan 16, 2020 |
| Contact name |
Robin H. van der Weide |
| Organization name |
Hubrecht Institute
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| Lab |
Kind Lab
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| Street address |
Uppsalalaan 8
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| City |
Utrecht |
| State/province |
Utrecht |
| ZIP/Postal code |
3584 CT |
| Country |
Netherlands |
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| Platforms (1) |
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| Samples (7)
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| Relations |
| BioProject |
PRJNA428522 |
| SRA |
SRP130935 |
| Supplementary file |
Size |
Download |
File type/resource |
| GSE108774_RAW.tar |
7.5 Gb |
(http)(custom) |
TAR (of TXT) |
SRA Run Selector |
| Raw data are available in SRA |
| Processed data provided as supplementary file |
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