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- PDB-9gjp: OCCM maturation intermediate stalled with an Arginine Finger muta... -

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Basic information

Entry
Database: PDB / ID: 9gjp
TitleOCCM maturation intermediate stalled with an Arginine Finger mutation in Mcm5: Conformer 2
Components
  • (DNA replication licensing factor ...) x 5
  • (Origin recognition complex subunit ...) x 6
  • Cell division cycle protein CDT1
  • DNA (42-MER)
  • Minichromosome maintenance protein 5
KeywordsREPLICATION / AAA+ ATPase / DNA translocase / ATPase switch / DNA replication
Function / homology
Function and homology information


CDC6 association with the ORC:origin complex / Cul8-RING ubiquitin ligase complex / maintenance of rDNA / MCM core complex / Assembly of the pre-replicative complex / Switching of origins to a post-replicative state / MCM complex binding / nuclear DNA replication / Assembly of the ORC complex at the origin of replication / premeiotic DNA replication ...CDC6 association with the ORC:origin complex / Cul8-RING ubiquitin ligase complex / maintenance of rDNA / MCM core complex / Assembly of the pre-replicative complex / Switching of origins to a post-replicative state / MCM complex binding / nuclear DNA replication / Assembly of the ORC complex at the origin of replication / premeiotic DNA replication / nuclear origin of replication recognition complex / pre-replicative complex assembly involved in nuclear cell cycle DNA replication / mitotic DNA replication / Activation of the pre-replicative complex / CMG complex / nuclear pre-replicative complex / nucleosome organization / Activation of ATR in response to replication stress / DNA replication preinitiation complex / MCM complex / replication fork protection complex / mitotic DNA replication checkpoint signaling / double-strand break repair via break-induced replication / single-stranded DNA helicase activity / mitotic DNA replication initiation / regulation of DNA-templated DNA replication initiation / silent mating-type cassette heterochromatin formation / DNA strand elongation involved in DNA replication / Orc1 removal from chromatin / nuclear replication fork / regulation of DNA replication / DNA replication origin binding / DNA replication initiation / subtelomeric heterochromatin formation / nucleosome binding / helicase activity / transcription elongation by RNA polymerase II / heterochromatin formation / single-stranded DNA binding / DNA helicase / forked DNA-dependent helicase activity / single-stranded 3'-5' DNA helicase activity / four-way junction helicase activity / double-stranded DNA helicase activity / chromosome, telomeric region / DNA replication / cell division / DNA damage response / chromatin binding / ATP hydrolysis activity / zinc ion binding / nucleoplasm / ATP binding / metal ion binding / nucleus / cytoplasm
Similarity search - Function
DNA replication factor Cdt1, C-terminal / DNA replication factor Cdt1, C-terminal WH domain superfamily / DNA replication factor Cdt1 C-terminal domain / Origin recognition complex, subunit 6, fungi / : / Origin recognition complex subunit 1 C-terminal winged HTH domain / Origin recognition complex, subunit 6 / Origin recognition complex subunit 6 (ORC6) / Origin recognition complex subunit 4 / Origin recognition complex, subunit 3 ...DNA replication factor Cdt1, C-terminal / DNA replication factor Cdt1, C-terminal WH domain superfamily / DNA replication factor Cdt1 C-terminal domain / Origin recognition complex, subunit 6, fungi / : / Origin recognition complex subunit 1 C-terminal winged HTH domain / Origin recognition complex, subunit 6 / Origin recognition complex subunit 6 (ORC6) / Origin recognition complex subunit 4 / Origin recognition complex, subunit 3 / Origin recognition complex, subunit 5 / Origin recognition complex subunit 4, C-terminal / Origin recognition complex subunit 3, winged helix C-terminal / Origin recognition complex subunit 3, N-terminal / : / : / Origin recognition complex (ORC) subunit 3 N-terminus / Origin recognition complex (ORC) subunit 4 C-terminus / Origin recognition complex (ORC) subunit 5 C-terminus / Origin recognition complex winged helix C-terminal / ORC5, lid domain / Orc1-like, AAA ATPase domain / Origin recognition complex subunit 2 RecA-like domain / AAA ATPase domain / Origin recognition complex, subunit 2 / AAA lid domain / AAA lid domain / : / : / MCM3 winged helix domain / MCM4, winged helix domain / : / MCM5, C-terminal domain / DNA replication licensing factor Mcm5 / MCM3-like, winged helix domain / DNA replication licensing factor Mcm3 / Mini-chromosome maintenance complex protein 4 / DNA replication licensing factor Mcm6 / DNA replication licensing factor Mcm7 / Mcm6, C-terminal winged-helix domain / MCM6 C-terminal winged-helix domain / DNA replication licensing factor Mcm2 / Mini-chromosome maintenance protein 2 / Mini-chromosome maintenance, conserved site / MCM family signature. / Bromo adjacent homology domain / BAH domain / Bromo adjacent homology (BAH) domain / Bromo adjacent homology (BAH) domain superfamily / BAH domain profile. / MCM N-terminal domain / MCM N-terminal domain / MCM OB domain / MCM OB domain / Mini-chromosome maintenance protein / MCM, AAA-lid domain / MCM P-loop domain / MCM AAA-lid domain / MCM family domain profile. / minichromosome maintenance proteins / MCM domain / ATPase family associated with various cellular activities (AAA) / ATPase, AAA-type, core / EF-Hand 1, calcium-binding site / Winged helix-like DNA-binding domain superfamily / Nucleic acid-binding, OB-fold / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
ADENOSINE-5'-DIPHOSPHATE / ADENOSINE-5'-TRIPHOSPHATE / DNA / DNA (> 10) / DNA replication licensing factor MCM3 / DNA replication licensing factor MCM2 / Minichromosome maintenance protein 5 / DNA replication licensing factor MCM4 / Origin recognition complex subunit 2 / DNA replication licensing factor MCM7 ...ADENOSINE-5'-DIPHOSPHATE / ADENOSINE-5'-TRIPHOSPHATE / DNA / DNA (> 10) / DNA replication licensing factor MCM3 / DNA replication licensing factor MCM2 / Minichromosome maintenance protein 5 / DNA replication licensing factor MCM4 / Origin recognition complex subunit 2 / DNA replication licensing factor MCM7 / Origin recognition complex subunit 6 / Cell division cycle protein CDT1 / Origin recognition complex subunit 5 / DNA replication licensing factor MCM6 / Origin recognition complex subunit 1 / Origin recognition complex subunit 3 / Origin recognition complex subunit 4
Similarity search - Component
Biological speciesSaccharomyces cerevisiae (brewer's yeast)
synthetic construct (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.4 Å
AuthorsButryn, A. / Costa, A.
Funding supportEuropean Union, United Kingdom, 2items
OrganizationGrant numberCountry
European Research Council (ERC)820102European Union
The Francis Crick InstituteCC2009 United Kingdom
CitationJournal: Nat Commun / Year: 2025
Title: Unidirectional MCM translocation away from ORC drives origin licensing.
Authors: Agata Butryn / Julia F Greiwe / Alessandro Costa /
Abstract: The MCM motor of the eukaryotic replicative helicase is loaded as a double hexamer onto DNA by the Origin Recognition Complex (ORC), Cdc6, and Cdt1. ATP binding supports formation of the ORC-Cdc6- ...The MCM motor of the eukaryotic replicative helicase is loaded as a double hexamer onto DNA by the Origin Recognition Complex (ORC), Cdc6, and Cdt1. ATP binding supports formation of the ORC-Cdc6-Cdt1-MCM (OCCM) helicase-recruitment complex where ORC-Cdc6 and one MCM hexamer form two juxtaposed rings around duplex DNA. ATP hydrolysis by MCM completes MCM loading but the mechanism is unknown. Here, we used cryo-EM to characterise helicase loading with ATPase-dead Arginine Finger variants of the six MCM subunits. We report the structure of two MCM complexes with different DNA grips, stalled as they mature to loaded MCM. The Mcm2 Arginine Finger-variant stabilises DNA binding by Mcm2 away from ORC/Cdc6. The Arginine Finger-variant of the neighbouring Mcm5 subunit stabilises DNA engagement by Mcm5 downstream of the Mcm2 binding site. Cdc6 and Orc1 progressively disengage from ORC as MCM translocates along DNA. We observe that duplex DNA translocation by MCM involves a set of leading-strand contacts by the pre-sensor 1 ATPase hairpins and lagging-strand contacts by the helix-2-insert hairpins. Mutating any of the MCM residues involved impairs high-salt resistant DNA binding in vitro and double-hexamer formation assessed by electron microscopy. Thus, ATPase-powered duplex DNA translocation away from ORC underlies MCM loading.
History
DepositionAug 22, 2024Deposition site: PDBE / Processing site: PDBE
Revision 1.0Mar 5, 2025Provider: repository / Type: Initial release
Revision 1.0Mar 5, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Mar 5, 2025Data content type: Additional map / Part number: 1 / Data content type: Additional map / Provider: repository / Type: Initial release
Revision 1.0Mar 5, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Mar 5, 2025Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
2: DNA replication licensing factor MCM2
3: DNA replication licensing factor MCM3
4: DNA replication licensing factor MCM4
5: Minichromosome maintenance protein 5
6: DNA replication licensing factor MCM6
7: DNA replication licensing factor MCM7
8: Cell division cycle protein CDT1
A: Origin recognition complex subunit 1
B: Origin recognition complex subunit 2
C: Origin recognition complex subunit 3
D: Origin recognition complex subunit 4
E: Origin recognition complex subunit 5
F: Origin recognition complex subunit 6
X: DNA (42-MER)
Y: DNA (42-MER)
hetero molecules


Theoretical massNumber of molelcules
Total (without water)1,126,35426
Polymers1,123,30415
Non-polymers3,05011
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

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DNA replication licensing factor ... , 5 types, 5 molecules 23467

#1: Protein DNA replication licensing factor MCM2 / Minichromosome maintenance protein 2


Mass: 98911.539 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: MCM2, YBL023C, YBL0438 / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P29469, DNA helicase
#2: Protein DNA replication licensing factor MCM3 / Minichromosome maintenance protein 3


Mass: 111720.242 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: MCM3, YEL032W, SYGP-ORF23 / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P24279, DNA helicase
#3: Protein DNA replication licensing factor MCM4 / Cell division control protein 54


Mass: 105138.375 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: MCM4, CDC54, HCD21, YPR019W, YP9531.13 / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P30665, DNA helicase
#5: Protein DNA replication licensing factor MCM6 / Minichromosome maintenance protein 6


Mass: 113110.211 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: MCM6, YGL201C / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P53091, DNA helicase
#6: Protein DNA replication licensing factor MCM7 / Cell division control protein 47 / Minichromosome maintenance protein 7


Mass: 95049.875 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: MCM7, CDC47, YBR202W, YBR1441 / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P38132, DNA helicase

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Protein , 2 types, 2 molecules 58

#4: Protein Minichromosome maintenance protein 5 / Cell division control protein 46


Mass: 86419.617 Da / Num. of mol.: 1 / Mutation: R549A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: MCM5, CDC46, YLR274W, L9328.1 / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P29496, DNA helicase
#7: Protein Cell division cycle protein CDT1 / SIC1 indispensable protein 2 / Topoisomerase-A hypersensitive protein 11


Mass: 68486.055 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: TAH11, CDT1, SID2, YJR046W, J1641 / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P47112

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Origin recognition complex subunit ... , 6 types, 6 molecules ABCDEF

#8: Protein Origin recognition complex subunit 1 / Origin recognition complex 120 kDa subunit


Mass: 108612.922 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: ORC1, YML065W / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P54784
#9: Protein Origin recognition complex subunit 2 / Origin recognition complex 71 kDa subunit


Mass: 71342.180 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: ORC2, RRR1, SIR5, YBR060C, YBR0523 / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P32833
#10: Protein Origin recognition complex subunit 3 / Origin recognition complex 62 kDa subunit


Mass: 72161.766 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: ORC3, OAF1, OIF1, YLL004W, L1365 / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P54790
#11: Protein Origin recognition complex subunit 4 / Origin recognition complex 56 kDa subunit


Mass: 60772.152 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: ORC4, YPR162C, P9325.5 / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P54791
#12: Protein Origin recognition complex subunit 5 / Origin recognition complex 53 kDa subunit


Mass: 55347.168 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: ORC5, YNL261W, N0834 / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P50874
#13: Protein Origin recognition complex subunit 6 / ACS-associated protein 1 / Origin recognition complex 50 kDa subunit


Mass: 50369.531 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae (brewer's yeast)
Gene: ORC6, AAP1, YHR118C / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: P38826

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DNA chain , 1 types, 2 molecules XY

#14: DNA chain DNA (42-MER)


Mass: 12931.301 Da / Num. of mol.: 2 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)

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Non-polymers , 3 types, 11 molecules

#15: Chemical
ChemComp-ADP / ADENOSINE-5'-DIPHOSPHATE


Mass: 427.201 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C10H15N5O10P2 / Comment: ADP, energy-carrying molecule*YM
#16: Chemical
ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 5 / Source method: obtained synthetically / Formula: Zn
#17: Chemical ChemComp-ATP / ADENOSINE-5'-TRIPHOSPHATE


Mass: 507.181 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C10H16N5O13P3 / Comment: ATP, energy-carrying molecule*YM

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Details

Has ligand of interestN
Has protein modificationN

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: ORC-Cdt1-MCM complex / Type: COMPLEX / Entity ID: #1-#14 / Source: RECOMBINANT
Molecular weightValue: 1.1 MDa / Experimental value: NO
Source (natural)Organism: Saccharomyces cerevisiae (brewer's yeast)
Source (recombinant)Organism: Saccharomyces cerevisiae (brewer's yeast)
Buffer solutionpH: 7.6
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2700 nm / Nominal defocus min: 1500 nm
Image recordingElectron dose: 30.34 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k)

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Processing

EM softwareName: PHENIX / Version: 1.21.1_5286 / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 151030 / Symmetry type: POINT

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