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- PDB-8xgc: Structure of yeast replisome associated with FACT and histone hex... -
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Basic information
Entry | Database: PDB / ID: 8xgc | ||||||
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Title | Structure of yeast replisome associated with FACT and histone hexamer, Composite map | ||||||
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![]() | REPLICATION / Replisome / FACT / histone hexamer | ||||||
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 / mitotic DNA replication initiation / cellular response to osmotic stress / mitotic intra-S DNA damage checkpoint signaling / SUMOylation of chromatin organization proteins / regulation of DNA-templated DNA replication initiation / silent mating-type cassette heterochromatin formation / 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 / nuclear chromosome / RNA Polymerase II Pre-transcription Events / DNA strand elongation involved in DNA replication / RNA Polymerase I Promoter Escape / leading strand elongation / positive regulation of transcription by RNA polymerase I / mitotic G2 DNA damage checkpoint signaling / nucleolar large rRNA transcription by RNA polymerase I / replication fork processing / nuclear replication fork / rRNA transcription / Estrogen-dependent gene expression / DNA replication origin binding / Dual incision in TC-NER / positive regulation of RNA polymerase II transcription preinitiation complex assembly / DNA replication initiation / positive regulation of transcription initiation by RNA polymerase II / 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 | ELECTRON MICROSCOPY / 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
Structure viewer | Molecule: ![]() ![]() |
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PDBx/mmCIF format | ![]() | 1.9 MB | Display | ![]() |
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-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 38317MC C: citing same article ( M: map data used to model this data |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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1 |
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Components
-DNA replication licensing factor ... , 5 types, 5 molecules 23467
#1: Protein | Mass: 98911.539 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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#2: Protein | Mass: 107653.508 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#3: Protein | Mass: 105138.375 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#5: Protein | Mass: 113110.211 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#6: Protein | Mass: 95049.875 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
-Protein , 10 types, 14 molecules 5EFGHIJKNROSPQ
#4: Protein | Mass: 86505.734 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() | ||||||||||||||
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#13: Protein | Mass: 74324.836 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() | ||||||||||||||
#14: Protein | Mass: 104543.391 Da / Num. of mol.: 3 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #15: Protein | | Mass: 141296.875 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #16: Protein | | Mass: 36402.590 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #17: Protein | | Mass: 124516.375 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #20: Protein | Mass: 15391.007 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #21: Protein | Mass: 11395.390 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #22: Protein | | Mass: 14013.177 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #23: Protein | | Mass: 14264.341 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
-DNA polymerase epsilon ... , 2 types, 2 molecules 89
#7: Protein | Mass: 255992.484 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() References: UniProt: P21951, DNA-directed DNA polymerase, Hydrolases; Acting on ester bonds; Exodeoxyribonucleases producing 5'-phosphomonoesters |
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#8: Protein | Mass: 78425.852 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
-DNA replication complex GINS protein ... , 4 types, 4 molecules ABCD
#9: Protein | Mass: 24230.576 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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#10: Protein | Mass: 29341.074 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#11: Protein | Mass: 21977.135 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#12: Protein | Mass: 33983.617 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
-FACT complex subunit ... , 2 types, 2 molecules LM
#18: Protein | Mass: 118776.984 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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#19: Protein | Mass: 63068.594 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
-DNA chain , 2 types, 2 molecules XY
#24: DNA chain | Mass: 15689.072 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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#25: DNA chain | Mass: 11935.764 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
-Non-polymers , 2 types, 12 molecules 


#26: Chemical | ChemComp-ZN / #27: Chemical | ChemComp-ADP / |
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-Details
Has ligand of interest | Y |
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Has protein modification | Y |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: Endogenous replisomes / Type: COMPLEX / Entity ID: #1-#25 / Source: NATURAL |
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Source (natural) | Organism: ![]() ![]() |
Buffer solution | pH: 7.5 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 1000 nm |
Image recording | Electron dose: 50 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) |
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Processing
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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3D reconstruction | Resolution: 3.7 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 524000 / Symmetry type: POINT |