Absolute quantification of cohesin, CTCF and their regulators in human cells.
CCCTC-Binding Factor
/ genetics
Carrier Proteins
/ genetics
Cell Cycle Proteins
/ genetics
Cell Line
Chromatids
/ genetics
Chromatin
/ genetics
Chromosomal Proteins, Non-Histone
/ genetics
Chromosome Segregation
/ genetics
Fluorescence Recovery After Photobleaching
/ methods
G1 Phase
/ genetics
Gene Dosage
Gene Expression
Genome, Human
/ genetics
HeLa Cells
Humans
Mass Spectrometry
/ methods
Nuclear Proteins
/ genetics
Proto-Oncogene Proteins
/ genetics
Cohesins
CTCF
cell biology
chromosomes
cohesin
fluorescence-correlation spectroscopy
gene expression
genome organization
human
mass spectrometry
sister chromatid cohesion
Journal
eLife
ISSN: 2050-084X
Titre abrégé: Elife
Pays: England
ID NLM: 101579614
Informations de publication
Date de publication:
17 06 2019
17 06 2019
Historique:
received:
20
02
2019
accepted:
13
06
2019
pubmed:
18
6
2019
medline:
26
2
2020
entrez:
18
6
2019
Statut:
epublish
Résumé
The organisation of mammalian genomes into loops and topologically associating domains (TADs) contributes to chromatin structure, gene expression and recombination. TADs and many loops are formed by cohesin and positioned by CTCF. In proliferating cells, cohesin also mediates sister chromatid cohesion, which is essential for chromosome segregation. Current models of chromatin folding and cohesion are based on assumptions of how many cohesin and CTCF molecules organise the genome. Here we have measured absolute copy numbers and dynamics of cohesin, CTCF, NIPBL, WAPL and sororin by mass spectrometry, fluorescence-correlation spectroscopy and fluorescence recovery after photobleaching in HeLa cells. In G1-phase, there are ~250,000 nuclear cohesin complexes, of which ~ 160,000 are chromatin-bound. Comparison with chromatin immunoprecipitation-sequencing data implies that some genomic cohesin and CTCF enrichment sites are unoccupied in single cells at any one time. We discuss the implications of these findings for how cohesin can contribute to genome organisation and cohesion.
Identifiants
pubmed: 31204999
doi: 10.7554/eLife.46269
pii: 46269
pmc: PMC6606026
doi:
pii:
Substances chimiques
CCCTC-Binding Factor
0
Carrier Proteins
0
Cell Cycle Proteins
0
Chromatin
0
Chromosomal Proteins, Non-Histone
0
NIPBL protein, human
0
Nuclear Proteins
0
Proto-Oncogene Proteins
0
WAPL protein, human
0
Banques de données
GEO
['GSE126990']
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : Vienna Science and Technology Fund
ID : WWTF LS09-13
Pays : International
Organisme : European Molecular Biology Laboratory
ID : International PhD Programme
Pays : International
Organisme : NIDA NIH HHS
ID : U01 DA047728
Pays : United States
Organisme : Austrian Research Promotion Agency
ID : Laura Bassi Centre for Optimized Structural Studies grant FFG-840283
Pays : International
Organisme : NIH HHS
ID : Common Fund 4D Nucleome Program (U01 DA047728)
Pays : United States
Organisme : Paul G. Allen Frontiers Group
ID : Allen Distinguished Investigator Program
Pays : International
Organisme : NIH HHS
ID : Common Fund 4D Nucleome Program (U01 EB021223)
Pays : United States
Organisme : European Molecular Biology Organization
ID : ALTF 1335-2016
Pays : International
Organisme : NIH HHS
ID : Common Fund 4D Nucleome Program (U01 EB021223 / U01 DA047728)
Pays : United States
Organisme : Horizon 2020 Framework Programme
ID : 693949
Pays : International
Organisme : Human Frontier Science Program
ID : LT001527/2017
Pays : International
Organisme : Austrian Science Fund
ID : I 3686-B25 MEIOREC - ERA-CAPS
Pays : International
Organisme : Horizon 2020 Framework Programme
ID : 823839
Pays : International
Organisme : Sixth Framework Programme
ID : 503464 (MitoCheck)
Pays : International
Organisme : Horizon 2020 Framework Programme
ID : 653706
Pays : International
Organisme : NIBIB NIH HHS
ID : U01 EB021223
Pays : United States
Organisme : Austrian Science Fund
ID : Wittgenstein award Z196-B20
Pays : International
Organisme : Seventh Framework Programme
ID : 241548 (MitoSys)
Pays : International
Organisme : Austrian Research Promotion Agency
ID : FFG-834223
Pays : International
Organisme : Austrian Science Fund
ID : FWF special research program SFB F34
Pays : International
Organisme : Austrian Research Promotion Agency
ID : FFG-852936
Pays : International
Commentaires et corrections
Type : CommentIn
Informations de copyright
© 2019, Holzmann et al.
Déclaration de conflit d'intérêts
JH, AP, KN, MH, NW, BK, JF, GD, WT, RL, RS, GB, BN, KM, ID, JE, JP No competing interests declared
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