9e2x

Cryo-EM structure of yeast CMG helicase stalled at G4-containing DNA template, state 2

Method: ELECTRON MICROSCOPY
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1. Protein Identity and Related Structures Protein Identity & Related Structures

DNA replication complex GINS protein PSF1

Saccharomyces cerevisiae W303

UniProt Q12488

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 13 DNA 2 DNA replication complex GINS protein PSF2 × 1 (P40359) DNA replication complex GINS protein PSF3 × 1 (Q12146) DNA replication complex GINS protein SLD5 × 1 (Q03406) Cell division control protein 45 × 1 (Q08032) Leading strand DNA template × 1 Lagging strand DNA template × 1 DNA replication licensing factor MCM2 × 1 (P29469) DNA replication licensing factor MCM3 × 1 (P24279) DNA replication licensing factor MCM4 × 1 (P30665) Minichromosome maintenance protein 5 × 1 (P29496) DNA replication licensing factor MCM6 × 1 (P53091) DNA replication licensing factor MCM7 × 1 (P38132) Topoisomerase 1-associated factor 1 × 1 (P53840) Chromosome segregation in meiosis protein 3 × 1 (Q04659) ADENOSINE-5'-TRIPHOSPHATE × 4 MAGNESIUM ION × 5 ZINC ION × 5 ADENOSINE-5'-DIPHOSPHATE × 2 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name PSF1_YEAST
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–208; UniProt 1–208

DNA replication complex GINS protein PSF2

Saccharomyces cerevisiae W303

UniProt P40359

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 13 DNA 2 DNA replication complex GINS protein PSF1 × 1 (Q12488) DNA replication complex GINS protein PSF3 × 1 (Q12146) DNA replication complex GINS protein SLD5 × 1 (Q03406) Cell division control protein 45 × 1 (Q08032) Leading strand DNA template × 1 Lagging strand DNA template × 1 DNA replication licensing factor MCM2 × 1 (P29469) DNA replication licensing factor MCM3 × 1 (P24279) DNA replication licensing factor MCM4 × 1 (P30665) Minichromosome maintenance protein 5 × 1 (P29496) DNA replication licensing factor MCM6 × 1 (P53091) DNA replication licensing factor MCM7 × 1 (P38132) Topoisomerase 1-associated factor 1 × 1 (P53840) Chromosome segregation in meiosis protein 3 × 1 (Q04659) ADENOSINE-5'-TRIPHOSPHATE × 4 MAGNESIUM ION × 5 ZINC ION × 5 ADENOSINE-5'-DIPHOSPHATE × 2 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name PSF2_YEAST
Isoform —
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 1–213; UniProt 1–213

DNA replication complex GINS protein PSF3

Saccharomyces cerevisiae W303

UniProt Q12146

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 13 DNA 2 DNA replication complex GINS protein PSF1 × 1 (Q12488) DNA replication complex GINS protein PSF2 × 1 (P40359) DNA replication complex GINS protein SLD5 × 1 (Q03406) Cell division control protein 45 × 1 (Q08032) Leading strand DNA template × 1 Lagging strand DNA template × 1 DNA replication licensing factor MCM2 × 1 (P29469) DNA replication licensing factor MCM3 × 1 (P24279) DNA replication licensing factor MCM4 × 1 (P30665) Minichromosome maintenance protein 5 × 1 (P29496) DNA replication licensing factor MCM6 × 1 (P53091) DNA replication licensing factor MCM7 × 1 (P38132) Topoisomerase 1-associated factor 1 × 1 (P53840) Chromosome segregation in meiosis protein 3 × 1 (Q04659) ADENOSINE-5'-TRIPHOSPHATE × 4 MAGNESIUM ION × 5 ZINC ION × 5 ADENOSINE-5'-DIPHOSPHATE × 2 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name PSF3_YEAST
Isoform —
PDB entities 3
Chains and sequence ranges Author chain C; PDBConstruct 24–217; UniProt 1–194

DNA replication complex GINS protein SLD5

Saccharomyces cerevisiae W303

UniProt Q03406

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 13 DNA 2 DNA replication complex GINS protein PSF1 × 1 (Q12488) DNA replication complex GINS protein PSF2 × 1 (P40359) DNA replication complex GINS protein PSF3 × 1 (Q12146) Cell division control protein 45 × 1 (Q08032) Leading strand DNA template × 1 Lagging strand DNA template × 1 DNA replication licensing factor MCM2 × 1 (P29469) DNA replication licensing factor MCM3 × 1 (P24279) DNA replication licensing factor MCM4 × 1 (P30665) Minichromosome maintenance protein 5 × 1 (P29496) DNA replication licensing factor MCM6 × 1 (P53091) DNA replication licensing factor MCM7 × 1 (P38132) Topoisomerase 1-associated factor 1 × 1 (P53840) Chromosome segregation in meiosis protein 3 × 1 (Q04659) ADENOSINE-5'-TRIPHOSPHATE × 4 MAGNESIUM ION × 5 ZINC ION × 5 ADENOSINE-5'-DIPHOSPHATE × 2 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name SLD5_YEAST
Isoform —
PDB entities 4
Chains and sequence ranges Author chain D; PDBConstruct 1–294; UniProt 1–294

Cell division control protein 45

Saccharomyces cerevisiae W303

UniProt Q08032

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 13 DNA 2 DNA replication complex GINS protein PSF1 × 1 (Q12488) DNA replication complex GINS protein PSF2 × 1 (P40359) DNA replication complex GINS protein PSF3 × 1 (Q12146) DNA replication complex GINS protein SLD5 × 1 (Q03406) Leading strand DNA template × 1 Lagging strand DNA template × 1 DNA replication licensing factor MCM2 × 1 (P29469) DNA replication licensing factor MCM3 × 1 (P24279) DNA replication licensing factor MCM4 × 1 (P30665) Minichromosome maintenance protein 5 × 1 (P29496) DNA replication licensing factor MCM6 × 1 (P53091) DNA replication licensing factor MCM7 × 1 (P38132) Topoisomerase 1-associated factor 1 × 1 (P53840) Chromosome segregation in meiosis protein 3 × 1 (Q04659) ADENOSINE-5'-TRIPHOSPHATE × 4 MAGNESIUM ION × 5 ZINC ION × 5 ADENOSINE-5'-DIPHOSPHATE × 2 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name CDC45_YEAST
Isoform —
PDB entities 5
Chains and sequence ranges Author chain E; PDBConstruct 1–650; UniProt 1–650

DNA replication licensing factor MCM2

Saccharomyces cerevisiae W303

UniProt P29469

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 13 DNA 2 DNA replication complex GINS protein PSF1 × 1 (Q12488) DNA replication complex GINS protein PSF2 × 1 (P40359) DNA replication complex GINS protein PSF3 × 1 (Q12146) DNA replication complex GINS protein SLD5 × 1 (Q03406) Cell division control protein 45 × 1 (Q08032) Leading strand DNA template × 1 Lagging strand DNA template × 1 DNA replication licensing factor MCM3 × 1 (P24279) DNA replication licensing factor MCM4 × 1 (P30665) Minichromosome maintenance protein 5 × 1 (P29496) DNA replication licensing factor MCM6 × 1 (P53091) DNA replication licensing factor MCM7 × 1 (P38132) Topoisomerase 1-associated factor 1 × 1 (P53840) Chromosome segregation in meiosis protein 3 × 1 (Q04659) ADENOSINE-5'-TRIPHOSPHATE × 4 MAGNESIUM ION × 5 ZINC ION × 5 ADENOSINE-5'-DIPHOSPHATE × 2 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name MCM2_YEAST
Isoform —
PDB entities 8
Chains and sequence ranges Author chain 2; PDBConstruct 1–868; UniProt 1–868

DNA replication licensing factor MCM3

Saccharomyces cerevisiae W303

UniProt P24279

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 13 DNA 2 DNA replication complex GINS protein PSF1 × 1 (Q12488) DNA replication complex GINS protein PSF2 × 1 (P40359) DNA replication complex GINS protein PSF3 × 1 (Q12146) DNA replication complex GINS protein SLD5 × 1 (Q03406) Cell division control protein 45 × 1 (Q08032) Leading strand DNA template × 1 Lagging strand DNA template × 1 DNA replication licensing factor MCM2 × 1 (P29469) DNA replication licensing factor MCM4 × 1 (P30665) Minichromosome maintenance protein 5 × 1 (P29496) DNA replication licensing factor MCM6 × 1 (P53091) DNA replication licensing factor MCM7 × 1 (P38132) Topoisomerase 1-associated factor 1 × 1 (P53840) Chromosome segregation in meiosis protein 3 × 1 (Q04659) ADENOSINE-5'-TRIPHOSPHATE × 4 MAGNESIUM ION × 5 ZINC ION × 5 ADENOSINE-5'-DIPHOSPHATE × 2 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name MCM3_YEAST
Isoform —
PDB entities 9
Chains and sequence ranges Author chain 3; PDBConstruct 1–971; UniProt 1–971

DNA replication licensing factor MCM4

Saccharomyces cerevisiae W303

UniProt P30665

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 13 DNA 2 DNA replication complex GINS protein PSF1 × 1 (Q12488) DNA replication complex GINS protein PSF2 × 1 (P40359) DNA replication complex GINS protein PSF3 × 1 (Q12146) DNA replication complex GINS protein SLD5 × 1 (Q03406) Cell division control protein 45 × 1 (Q08032) Leading strand DNA template × 1 Lagging strand DNA template × 1 DNA replication licensing factor MCM2 × 1 (P29469) DNA replication licensing factor MCM3 × 1 (P24279) Minichromosome maintenance protein 5 × 1 (P29496) DNA replication licensing factor MCM6 × 1 (P53091) DNA replication licensing factor MCM7 × 1 (P38132) Topoisomerase 1-associated factor 1 × 1 (P53840) Chromosome segregation in meiosis protein 3 × 1 (Q04659) ADENOSINE-5'-TRIPHOSPHATE × 4 MAGNESIUM ION × 5 ZINC ION × 5 ADENOSINE-5'-DIPHOSPHATE × 2 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name MCM4_YEAST
Isoform —
PDB entities 10
Chains and sequence ranges Author chain 4; PDBConstruct 1–933; UniProt 1–933

Minichromosome maintenance protein 5

Saccharomyces cerevisiae W303

UniProt P29496

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 13 DNA 2 DNA replication complex GINS protein PSF1 × 1 (Q12488) DNA replication complex GINS protein PSF2 × 1 (P40359) DNA replication complex GINS protein PSF3 × 1 (Q12146) DNA replication complex GINS protein SLD5 × 1 (Q03406) Cell division control protein 45 × 1 (Q08032) Leading strand DNA template × 1 Lagging strand DNA template × 1 DNA replication licensing factor MCM2 × 1 (P29469) DNA replication licensing factor MCM3 × 1 (P24279) DNA replication licensing factor MCM4 × 1 (P30665) DNA replication licensing factor MCM6 × 1 (P53091) DNA replication licensing factor MCM7 × 1 (P38132) Topoisomerase 1-associated factor 1 × 1 (P53840) Chromosome segregation in meiosis protein 3 × 1 (Q04659) ADENOSINE-5'-TRIPHOSPHATE × 4 MAGNESIUM ION × 5 ZINC ION × 5 ADENOSINE-5'-DIPHOSPHATE × 2 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name MCM5_YEAST
Isoform —
PDB entities 11
Chains and sequence ranges Author chain 5; PDBConstruct 1–775; UniProt 1–775

DNA replication licensing factor MCM6

Saccharomyces cerevisiae W303

UniProt P53091

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 13 DNA 2 DNA replication complex GINS protein PSF1 × 1 (Q12488) DNA replication complex GINS protein PSF2 × 1 (P40359) DNA replication complex GINS protein PSF3 × 1 (Q12146) DNA replication complex GINS protein SLD5 × 1 (Q03406) Cell division control protein 45 × 1 (Q08032) Leading strand DNA template × 1 Lagging strand DNA template × 1 DNA replication licensing factor MCM2 × 1 (P29469) DNA replication licensing factor MCM3 × 1 (P24279) DNA replication licensing factor MCM4 × 1 (P30665) Minichromosome maintenance protein 5 × 1 (P29496) DNA replication licensing factor MCM7 × 1 (P38132) Topoisomerase 1-associated factor 1 × 1 (P53840) Chromosome segregation in meiosis protein 3 × 1 (Q04659) ADENOSINE-5'-TRIPHOSPHATE × 4 MAGNESIUM ION × 5 ZINC ION × 5 ADENOSINE-5'-DIPHOSPHATE × 2 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name MCM6_YEAST
Isoform —
PDB entities 12
Chains and sequence ranges Author chain 6; PDBConstruct 1–1017; UniProt 1–1017

DNA replication licensing factor MCM7

Saccharomyces cerevisiae W303

UniProt P38132

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 13 DNA 2 DNA replication complex GINS protein PSF1 × 1 (Q12488) DNA replication complex GINS protein PSF2 × 1 (P40359) DNA replication complex GINS protein PSF3 × 1 (Q12146) DNA replication complex GINS protein SLD5 × 1 (Q03406) Cell division control protein 45 × 1 (Q08032) Leading strand DNA template × 1 Lagging strand DNA template × 1 DNA replication licensing factor MCM2 × 1 (P29469) DNA replication licensing factor MCM3 × 1 (P24279) DNA replication licensing factor MCM4 × 1 (P30665) Minichromosome maintenance protein 5 × 1 (P29496) DNA replication licensing factor MCM6 × 1 (P53091) Topoisomerase 1-associated factor 1 × 1 (P53840) Chromosome segregation in meiosis protein 3 × 1 (Q04659) ADENOSINE-5'-TRIPHOSPHATE × 4 MAGNESIUM ION × 5 ZINC ION × 5 ADENOSINE-5'-DIPHOSPHATE × 2 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name MCM7_YEAST
Isoform —
PDB entities 13
Chains and sequence ranges Author chain 7; PDBConstruct 1–845; UniProt 1–845

Topoisomerase 1-associated factor 1

Saccharomyces cerevisiae W303

UniProt P53840

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 13 DNA 2 DNA replication complex GINS protein PSF1 × 1 (Q12488) DNA replication complex GINS protein PSF2 × 1 (P40359) DNA replication complex GINS protein PSF3 × 1 (Q12146) DNA replication complex GINS protein SLD5 × 1 (Q03406) Cell division control protein 45 × 1 (Q08032) Leading strand DNA template × 1 Lagging strand DNA template × 1 DNA replication licensing factor MCM2 × 1 (P29469) DNA replication licensing factor MCM3 × 1 (P24279) DNA replication licensing factor MCM4 × 1 (P30665) Minichromosome maintenance protein 5 × 1 (P29496) DNA replication licensing factor MCM6 × 1 (P53091) DNA replication licensing factor MCM7 × 1 (P38132) Chromosome segregation in meiosis protein 3 × 1 (Q04659) ADENOSINE-5'-TRIPHOSPHATE × 4 MAGNESIUM ION × 5 ZINC ION × 5 ADENOSINE-5'-DIPHOSPHATE × 2 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name TOF1_YEAST
Isoform —
PDB entities 14
Chains and sequence ranges Author chain X; PDBConstruct 1–1238; UniProt 1–1238

Chromosome segregation in meiosis protein 3

Saccharomyces cerevisiae W303

UniProt Q04659

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 13 DNA 2 DNA replication complex GINS protein PSF1 × 1 (Q12488) DNA replication complex GINS protein PSF2 × 1 (P40359) DNA replication complex GINS protein PSF3 × 1 (Q12146) DNA replication complex GINS protein SLD5 × 1 (Q03406) Cell division control protein 45 × 1 (Q08032) Leading strand DNA template × 1 Lagging strand DNA template × 1 DNA replication licensing factor MCM2 × 1 (P29469) DNA replication licensing factor MCM3 × 1 (P24279) DNA replication licensing factor MCM4 × 1 (P30665) Minichromosome maintenance protein 5 × 1 (P29496) DNA replication licensing factor MCM6 × 1 (P53091) DNA replication licensing factor MCM7 × 1 (P38132) Topoisomerase 1-associated factor 1 × 1 (P53840) ADENOSINE-5'-TRIPHOSPHATE × 4 MAGNESIUM ION × 5 ZINC ION × 5 ADENOSINE-5'-DIPHOSPHATE × 2 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name CSM3_YEAST
Isoform —
PDB entities 15
Chains and sequence ranges Author chain Y; PDBConstruct 1–92; UniProt 48–139

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id9e2x
Deposition date deposition_date2024-10-23
Structure title titleCryo-EM structure of yeast CMG helicase stalled at G4-containing DNA template, state 2
Keywords keywordshelicase, DNA replication, cell division, fork stalling, translocation, REPLICATION, REPLICATION-DNA complex; REPLICATION/DNA
Experimental Method methodELECTRON MICROSCOPY
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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

9e2x__assembly_1__model_1

Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

9e2x__assembly_1__model_1 | I(q)

10-2 10-1 106 107 108 109 q (1/Angstrom) I(q)
100 plotted points; both axes use logarithmic scales.

9e2x__assembly_1__model_1 | P(r) · Pending

The new assembly/model P(r) has not been calculated yet This placeholder does not display legacy data r (Angstrom) P(r)
P(r) will be calculated and displayed separately for the same assembly/model.
Rg(Guinier)61.96 Å
Rg (electron density)61.97 Å
Total Rg61.95 Å
Atom count98329
Residues6044
Excluded volume877560 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 9e2x__assembly_1__model_1 15-meric (15) Success 4.1.3-1-20251215 (887e7ef) View Download
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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (19)

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7. Citations (1)