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- EMDB-38317: Structure of yeast replisome associated with FACT and histone hex... -
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Basic information
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Title | Structure of yeast replisome associated with FACT and histone hexamer, Composite map | |||||||||
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![]() | Replisome / FACT / histone hexamer / REPLICATION | |||||||||
Function / homology | ![]() Regulation of TP53 Activity through Phosphorylation / regulation of sister chromatid cohesion / establishment of sister chromatid cohesion / : / DNA-templated DNA replication maintenance of fidelity / gene conversion / FACT complex / Unwinding of DNA / maintenance of DNA repeat elements / regulation of nuclear cell cycle DNA replication ...Regulation of TP53 Activity through Phosphorylation / regulation of sister chromatid cohesion / establishment of sister chromatid cohesion / : / DNA-templated DNA replication maintenance of fidelity / gene conversion / FACT complex / Unwinding of DNA / maintenance of DNA repeat elements / regulation of nuclear cell cycle DNA replication / DNA replication initiation / Cul8-RING ubiquitin ligase complex / replication fork arrest / HATs acetylate histones / RNA polymerase I upstream activating factor complex / meiotic chromosome segregation / Condensation of Prophase Chromosomes / SIRT1 negatively regulates rRNA expression / epsilon DNA polymerase complex / DNA strand elongation involved in mitotic DNA replication / GINS complex / MCM core complex / Assembly of the pre-replicative complex / Switching of origins to a post-replicative state / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / MCM complex binding / mitotic DNA replication preinitiation complex assembly / nuclear DNA replication / regulation of chromatin organization / Assembly of the ORC complex at the origin of replication / premeiotic DNA replication / HDACs deacetylate histones / pre-replicative complex assembly involved in nuclear cell cycle DNA replication / SUMO binding / anaphase-promoting complex binding / nucleotide-excision repair, DNA gap filling / mitotic DNA replication / Activation of the pre-replicative complex / DNA replication checkpoint signaling / CMG complex / establishment of mitotic sister chromatid cohesion / nuclear pre-replicative complex / DNA replication proofreading / nucleosome organization / Termination of translesion DNA synthesis / Activation of ATR in response to replication stress / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / DNA replication preinitiation complex / single-stranded DNA 3'-5' DNA exonuclease activity / MCM complex / Oxidative Stress Induced Senescence / replication fork protection complex / mitotic DNA replication checkpoint signaling / double-strand break repair via break-induced replication / single-stranded DNA helicase activity / RMTs methylate histone arginines / cellular response to osmotic stress / mitotic DNA replication initiation / mitotic intra-S DNA damage checkpoint signaling / SUMOylation of chromatin organization proteins / silent mating-type cassette heterochromatin formation / regulation of DNA-templated DNA replication initiation / Hydrolases; Acting on ester bonds; Exodeoxyribonucleases producing 5'-phosphomonoesters / 3'-5' DNA helicase activity / mitotic sister chromatid cohesion / TP53 Regulates Transcription of DNA Repair Genes / RNA Polymerase II Pre-transcription Events / nuclear chromosome / DNA strand elongation involved in DNA replication / RNA Polymerase I Promoter Escape / positive regulation of transcription by RNA polymerase I / leading strand elongation / nucleolar large rRNA transcription by RNA polymerase I / mitotic G2 DNA damage checkpoint signaling / replication fork processing / nuclear replication fork / Estrogen-dependent gene expression / rRNA transcription / Dual incision in TC-NER / DNA replication origin binding / positive regulation of RNA polymerase II transcription preinitiation complex assembly / positive regulation of transcription initiation by RNA polymerase II / DNA replication initiation / Ub-specific processing proteases / error-prone translesion synthesis / subtelomeric heterochromatin formation / base-excision repair, gap-filling / telomere maintenance / nuclear periphery / replication fork / meiotic cell cycle / helicase activity / transcription elongation by RNA polymerase II / base-excision repair / double-strand break repair via nonhomologous end joining / DNA-templated DNA replication / structural constituent of chromatin / nucleosome / heterochromatin formation / double-strand break repair Similarity search - Function | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.7 Å | |||||||||
![]() | Li N / Gao Y / Yu D / Gao N / Zhai Y | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Parental histone transfer caught at the replication fork. Authors: Ningning Li / Yuan Gao / Yujie Zhang / Daqi Yu / Jianwei Lin / Jianxun Feng / Jian Li / Zhichun Xu / Yingyi Zhang / Shangyu Dang / Keda Zhou / Yang Liu / Xiang David Li / Bik Kwoon Tye / ...Authors: Ningning Li / Yuan Gao / Yujie Zhang / Daqi Yu / Jianwei Lin / Jianxun Feng / Jian Li / Zhichun Xu / Yingyi Zhang / Shangyu Dang / Keda Zhou / Yang Liu / Xiang David Li / Bik Kwoon Tye / Qing Li / Ning Gao / Yuanliang Zhai / ![]() ![]() Abstract: In eukaryotes, DNA compacts into chromatin through nucleosomes. Replication of the eukaryotic genome must be coupled to the transmission of the epigenome encoded in the chromatin. Here we report cryo- ...In eukaryotes, DNA compacts into chromatin through nucleosomes. Replication of the eukaryotic genome must be coupled to the transmission of the epigenome encoded in the chromatin. Here we report cryo-electron microscopy structures of yeast (Saccharomyces cerevisiae) replisomes associated with the FACT (facilitates chromatin transactions) complex (comprising Spt16 and Pob3) and an evicted histone hexamer. In these structures, FACT is positioned at the front end of the replisome by engaging with the parental DNA duplex to capture the histones through the middle domain and the acidic carboxyl-terminal domain of Spt16. The H2A-H2B dimer chaperoned by the carboxyl-terminal domain of Spt16 is stably tethered to the H3-H4 tetramer, while the vacant H2A-H2B site is occupied by the histone-binding domain of Mcm2. The Mcm2 histone-binding domain wraps around the DNA-binding surface of one H3-H4 dimer and extends across the tetramerization interface of the H3-H4 tetramer to the binding site of Spt16 middle domain before becoming disordered. This arrangement leaves the remaining DNA-binding surface of the other H3-H4 dimer exposed to additional interactions for further processing. The Mcm2 histone-binding domain and its downstream linker region are nested on top of Tof1, relocating the parental histones to the replisome front for transfer to the newly synthesized lagging-strand DNA. Our findings offer crucial structural insights into the mechanism of replication-coupled histone recycling for maintaining epigenetic inheritance. | |||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 44.2 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 47.1 KB 47.1 KB | Display Display | ![]() |
Images | ![]() | 117.7 KB | ||
Filedesc metadata | ![]() | 16.4 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 419.1 KB | Display | ![]() |
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Full document | ![]() | 418.6 KB | Display | |
Data in XML | ![]() | 7.5 KB | Display | |
Data in CIF | ![]() | 8.7 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8xgcMC C: citing same article ( M: atomic model generated by this map |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.06 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
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Sample components
+Entire : Endogenous replisomes
+Supramolecule #1: Endogenous replisomes
+Macromolecule #1: DNA replication licensing factor MCM2
+Macromolecule #2: DNA replication licensing factor MCM3
+Macromolecule #3: DNA replication licensing factor MCM4
+Macromolecule #4: Minichromosome maintenance protein 5
+Macromolecule #5: DNA replication licensing factor MCM6
+Macromolecule #6: DNA replication licensing factor MCM7
+Macromolecule #7: DNA polymerase epsilon catalytic subunit A
+Macromolecule #8: DNA polymerase epsilon subunit B
+Macromolecule #9: DNA replication complex GINS protein PSF1
+Macromolecule #10: DNA replication complex GINS protein PSF2
+Macromolecule #11: DNA replication complex GINS protein PSF3
+Macromolecule #12: DNA replication complex GINS protein SLD5
+Macromolecule #13: Cell division control protein 45
+Macromolecule #14: DNA polymerase alpha-binding protein
+Macromolecule #15: Topoisomerase 1-associated factor 1
+Macromolecule #16: Chromosome segregation in meiosis protein 3
+Macromolecule #17: Mediator of replication checkpoint protein 1
+Macromolecule #18: FACT complex subunit SPT16
+Macromolecule #19: FACT complex subunit POB3
+Macromolecule #20: Histone H3
+Macromolecule #21: Histone H4
+Macromolecule #22: Histone H2A.1
+Macromolecule #23: Histone H2B.2
+Macromolecule #24: DNA (51-MER)
+Macromolecule #25: DNA (39-MER)
+Macromolecule #26: ZINC ION
+Macromolecule #27: ADENOSINE-5'-DIPHOSPHATE
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.5 |
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Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.5 µm / Nominal defocus min: 1.0 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Startup model | Type of model: NONE |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.7 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 524000 |
Initial angle assignment | Type: PROJECTION MATCHING |
Final angle assignment | Type: PROJECTION MATCHING |