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Assembly of Drosophila Centromeric Chromatin Proteins during Mitosis

Journal Article · · PLoS Genetics
 [1];  [2];  [3];  [2];  [3];  [3]
  1. Univ. of Connecticut, Storrs, CT (United States). Dept. of Molecular and Cell Biology; DOE/OSTI
  2. Univ. of Connecticut, Storrs, CT (United States). Dept. of Molecular and Cell Biology
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Dept. of Genome Dynamics; Univ. of California, Berkeley, CA (United States). Dept. of Molecular and Cell Biology
Semi-conservative segregation of nucleosomes to sister chromatids during DNA replication creates gaps that must be filled by new nucleosome assembly. We analyzed the cell-cycle timing of centromeric chromatin assembly in Drosophila, which contains the H3 variant CID (CENP-A in humans), as well as CENP-C and CAL1, which are required for CID localization. Pulsechase experiments show that CID and CENP-C levels decrease by 50% at each cell division, as predicted for semiconservative segregation and inheritance, whereas CAL1 displays higher turnover. Quench-chase-pulse experiments demonstrate that there is a significant lag between replication and replenishment of centromeric chromatin. Surprisingly, new CID is recruited to centromeres in metaphase, by a mechanism that does not require an intact mitotic spindle, but does require proteasome activity. Interestingly, new CAL1 is recruited to centromeres before CID in prophase. Furthermore, CAL1, but not CENP-C, is found in complex with pre-nucleosomal CID. Finally, CENP-C displays yet a different pattern of incorporation, during both interphase and mitosis. The unusual timing of CID recruitment and unique dynamics of CAL1 identify a distinct centromere assembly pathway in Drosophila and suggest that CAL1 is a key regulator of centromere propagation.
Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
National Institutes of Health (NIH); USDOE Office of Science (SC), Biological and Environmental Research (BER). Biological Systems Science Division
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1627290
Journal Information:
PLoS Genetics, Journal Name: PLoS Genetics Journal Issue: 5 Vol. 7; ISSN 1553-7404
Publisher:
Public Library of ScienceCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (50)

Quantitative Microscopy Reveals Centromeric Chromatin Stability, Size, and Cell Cycle Mechanisms to Maintain Centromere Homeostasis book January 2017
Nucleosomal composition at the centromere: a numbers game journal January 2013
Anarchic centromeres: deciphering order from apparent chaos journal February 2014
Cell-Cycle-Coupled Structural Oscillation of Centromeric Nucleosomes in Yeast journal July 2012
An Iml3-Chl4 Heterodimer Links the Core Centromere to Factors Required for Accurate Chromosome Segregation journal October 2013
Phosphorylation and DNA Binding of HJURP Determine Its Centromeric Recruitment and Function in CenH3CENP-A Loading journal July 2014
Chromosomes: Keeping Centromeric Chromatin Tidy through S Phase journal January 2019
Cdk Activity Couples Epigenetic Centromere Inheritance to Cell Cycle Progression journal January 2012
The E3 Ligase CUL3/RDX Controls Centromere Maintenance by Ubiquitylating and Stabilizing CENP-A in a CAL1-Dependent Manner journal March 2014
Establishment of Centromeric Chromatin by the CENP-A Assembly Factor CAL1 Requires FACT-Mediated Transcription journal July 2015
CAL1 is the Drosophila CENP-A assembly factor journal January 2014
Repetitive centromeric satellite RNA is essential for kinetochore formation and cell division journal December 2014
Chromatin assembly: Journey to the CENter of the chromosome journal July 2016
Human centromeric CENP-A chromatin is a homotypic, octameric nucleosome at all cell cycle points journal February 2017
Winged migration journal November 2016
The E3-ligases SCFPpa and APC/CCdh1 co-operate to regulate CENP-ACID expression across the cell cycle journal February 2019
Swr1 mediated H2A.ZPht1 incorporation designates centromere DNA for de novo CENP-ACnp1 assembly journal November 2017
Transgenerational Propagation and Quantitative Maintenance of Paternal Centromeres Depends on Cid/Cenp-A Presence in Drosophila Sperm journal December 2012
The checkpoint protein Zw10 connects CAL1-dependent CENP-A centromeric loading and mitosis duration in Drosophila cells journal September 2019
A Role for the CAL1-Partner Modulo in Centromere Integrity and Accurate Chromosome Segregation in Drosophila journal September 2012
Structural basis for centromere maintenance by Drosophila CENP ‐A chaperone CAL 1 journal March 2020
Centromere and Pericentromere Transcription: Roles and Regulation … in Sickness and in Health journal December 2018
GIP Contributions to the Regulation of Centromere at the Interface Between the Nuclear Envelope and the Nucleoplasm journal February 2016
Repetitive Fragile Sites: Centromere Satellite DNA As a Source of Genome Instability in Human Diseases journal December 2018
Orchestrating the Specific Assembly of Centromeric Nucleosomes book January 2017
Putting CENP-A in its place journal June 2012
Deposition, turnover, and release of CENH3 at Arabidopsis centromeres journal August 2011
Kinetochore assembly and function through the cell cycle journal July 2016
A role of the Trx-G complex in Cid/CENP-A deposition at Drosophila melanogaster centromeres journal June 2019
Genetic and epigenetic effects on centromere establishment journal November 2019
Centromeres of filamentous fungi journal July 2012
Temporal control of epigenetic centromere specification journal June 2012
Neocentromeres and epigenetically inherited features of centromeres journal June 2012
Evolutionary insights into the role of the essential centromere protein CAL1 in Drosophila journal July 2012
The CENP-A nucleosome: a dynamic structure and role at the centromere journal July 2012
A two-step mechanism for epigenetic specification of centromere identity and function journal July 2013
The molecular basis for centromere identity and function journal November 2015
Spt6 is a maintenance factor for centromeric CENP-A journal June 2020
Repetitive centromeric satellite RNA is essential for kinetochore formation and cell division journal November 2014
Centromere transcription allows CENP-A to transit from chromatin association to stable incorporation journal April 2018
Scm3 deposits a (Cse4–H4)2 tetramer onto DNA through a Cse4–H4 dimer intermediate journal March 2014
Phosphorylation of Drosophila CENP-A on serine 20 regulates protein turn-over and centromere-specific loading journal September 2019
Localization of Drosophila CENP-A to non-centromeric sites depends on the NuRD complex journal November 2019
Centromeric CENP-A loading requires accurate mitotic timing, which is linked to checkpoint proteins posted_content January 2019
DNA replication-mediated error correction of ectopic CENP-A deposition maintains centromere identity journal September 2018
Spt6 is a maintenance factor for centromeric CENP-A journal January 2019
Epigenetic inheritance of centromere identity in a heterologous system posted_content January 2019
Structural Basis for CAL1-Mediated Centromere Maintenance posted_content January 2019
Hap2-Ino80 facilitated transcription promotes de novo establishment of CENP-A chromatin posted_content January 2019
Cell Cycle-Regulated Transcription of CENP-A by the MBF Complex Ensures Optimal Level of CENP-A for Centromere Formation journal January 2019

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