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- PDB-7tji: S. cerevisiae ORC bound to 84 bp ARS1 DNA and Cdc6 (state 2) with... -
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Open data
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Basic information
Entry | Database: PDB / ID: 7tji | ||||||||||||
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Title | S. cerevisiae ORC bound to 84 bp ARS1 DNA and Cdc6 (state 2) with flexible Orc6 N-terminal domain | ||||||||||||
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![]() | REPLICATION/DNA / initiator / helicase loader / AAA+ ATPase / REPLICATION-DNA complex | ||||||||||||
Function / homology | ![]() CDC6 association with the ORC:origin complex / Cul8-RING ubiquitin ligase complex / maintenance of rDNA / Assembly of the ORC complex at the origin of replication / nuclear origin of replication recognition complex / pre-replicative complex assembly involved in nuclear cell cycle DNA replication / Activation of the pre-replicative complex / nucleosome organization / nuclear pre-replicative complex / Activation of ATR in response to replication stress ...CDC6 association with the ORC:origin complex / Cul8-RING ubiquitin ligase complex / maintenance of rDNA / Assembly of the ORC complex at the origin of replication / nuclear origin of replication recognition complex / pre-replicative complex assembly involved in nuclear cell cycle DNA replication / Activation of the pre-replicative complex / nucleosome organization / nuclear pre-replicative complex / Activation of ATR in response to replication stress / DNA replication preinitiation complex / mitotic DNA replication checkpoint signaling / silent mating-type cassette heterochromatin formation / regulation of DNA-templated DNA replication initiation / CDK-mediated phosphorylation and removal of Cdc6 / Orc1 removal from chromatin / regulation of DNA replication / DNA replication origin binding / DNA replication initiation / subtelomeric heterochromatin formation / nucleosome binding / G1/S transition of mitotic cell cycle / chromosome / chromosome, telomeric region / cell division / GTPase activity / chromatin binding / GTP binding / ATP hydrolysis activity / nucleoplasm / ATP binding / nucleus / metal ion binding / cytoplasm Similarity search - Function | ||||||||||||
Biological species | ![]() ![]() | ||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.7 Å | ||||||||||||
![]() | Schmidt, J.M. / Yang, R. / Kumar, A. / Hunker, O. / Bleichert, F. | ||||||||||||
Funding support | ![]()
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![]() | ![]() Title: A mechanism of origin licensing control through autoinhibition of S. cerevisiae ORC·DNA·Cdc6. Authors: Jan Marten Schmidt / Ran Yang / Ashish Kumar / Olivia Hunker / Jan Seebacher / Franziska Bleichert / ![]() ![]() Abstract: The coordinated action of multiple replicative helicase loading factors is needed for the licensing of replication origins prior to DNA replication. Binding of the Origin Recognition Complex (ORC) to ...The coordinated action of multiple replicative helicase loading factors is needed for the licensing of replication origins prior to DNA replication. Binding of the Origin Recognition Complex (ORC) to DNA initiates the ATP-dependent recruitment of Cdc6, Cdt1 and Mcm2-7 loading, but the structural details for timely ATPase site regulation and for how loading can be impeded by inhibitory signals, such as cyclin-dependent kinase phosphorylation, are unknown. Using cryo-electron microscopy, we have determined several structures of S. cerevisiae ORC·DNA·Cdc6 intermediates at 2.5-2.7 Å resolution. These structures reveal distinct ring conformations of the initiator·co-loader assembly and inactive ATPase site configurations for ORC and Cdc6. The Orc6 N-terminal domain laterally engages the ORC·Cdc6 ring in a manner that is incompatible with productive Mcm2-7 docking, while deletion of this Orc6 region alleviates the CDK-mediated inhibition of Mcm7 recruitment. Our findings support a model in which Orc6 promotes the assembly of an autoinhibited ORC·DNA·Cdc6 intermediate to block origin licensing in response to CDK phosphorylation and to avert DNA re-replication. | ||||||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 570.3 KB | Display | ![]() |
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PDB format | ![]() | 435.9 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 25926MC ![]() 7tjfC ![]() 7tjhC ![]() 7tjjC ![]() 7tjkC 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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Components
-Origin recognition complex subunit ... , 6 types, 6 molecules ABCDEF
#1: Protein | Mass: 104818.422 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: ORC1, YML065W / Production host: ![]() |
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#2: Protein | Mass: 71342.180 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: ORC2 / Production host: ![]() |
#3: Protein | Mass: 72161.766 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: ORC / Production host: ![]() |
#4: Protein | Mass: 61044.414 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: ORC4, YPR162C, P9325.5 / Production host: ![]() |
#5: Protein | Mass: 55347.168 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: ORC5, YNL261W, N0834 / Production host: ![]() |
#6: Protein | Mass: 50369.531 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: ORC6, AAP1, YHR118C / Production host: ![]() |
-DNA chain , 2 types, 2 molecules GH
#7: DNA chain | Mass: 25820.561 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() ![]() |
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#8: DNA chain | Mass: 25977.766 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) ![]() ![]() |
-Protein , 1 types, 1 molecules I
#9: Protein | Mass: 58384.625 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: CDC6, YJL194W, J0347 / Production host: ![]() |
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-Non-polymers , 3 types, 120 molecules ![](data/chem/img/ATP.gif)
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![](data/chem/img/HOH.gif)
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#10: Chemical | ChemComp-ATP / #11: Chemical | ChemComp-MG / #12: Water | ChemComp-HOH / | |
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-Details
Has ligand of interest | Y |
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-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: ORC in complex with ARS1 DNA and Cdc6 / Type: COMPLEX / Entity ID: #1-#9 / Source: MULTIPLE SOURCES |
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Molecular weight | Experimental value: NO |
Buffer solution | pH: 7.6 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Grid material: GOLD / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3 |
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: 1600 nm / Nominal defocus min: 800 nm |
Image recording | Electron dose: 6.6 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
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Processing
Software | Name: PHENIX / Version: 1.19.2_4158: / Classification: refinement | ||||||||||||||||||||||||
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||
3D reconstruction | Resolution: 2.7 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 170092 / Symmetry type: POINT | ||||||||||||||||||||||||
Refine LS restraints |
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