9e2z

Cryo-EM structure of human CMG helicase stalled at G4-containing DNA template

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

DNA replication licensing factor MCM2

Homo sapiens

UniProt P49736

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 11 DNA 2 Isoform 2 of DNA replication licensing factor MCM3 × 1 (P25205) DNA replication licensing factor MCM4 × 1 (P33991) DNA replication licensing factor MCM5 × 1 (P33992) DNA replication licensing factor MCM6 × 1 (Q14566) DNA replication licensing factor MCM7 × 1 (P33993) DNA replication complex GINS protein PSF1 × 1 (Q14691) DNA replication complex GINS protein PSF2 × 1 (Q9Y248) DNA replication complex GINS protein PSF3 × 1 (Q9BRX5) DNA replication complex GINS protein SLD5 × 1 (Q9BRT9) Cell division control protein 45 homolog × 1 (O75419) Leading strand DNA template × 1 Lagging strand DNA template × 1 ADENOSINE-5'-DIPHOSPHATE × 1 MAGNESIUM ION × 6 ADENOSINE-5'-TRIPHOSPHATE × 5 ZINC ION × 4 POTASSIUM ION × 2 water × 6 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name MCM2_HUMAN
Isoform —
PDB entities 1
Chains and sequence ranges Author chain 2; PDBConstruct 1–904; UniProt 1–904

Isoform 2 of DNA replication licensing factor MCM3

Homo sapiens

UniProt P25205

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 11 DNA 2 DNA replication licensing factor MCM2 × 1 (P49736) DNA replication licensing factor MCM4 × 1 (P33991) DNA replication licensing factor MCM5 × 1 (P33992) DNA replication licensing factor MCM6 × 1 (Q14566) DNA replication licensing factor MCM7 × 1 (P33993) DNA replication complex GINS protein PSF1 × 1 (Q14691) DNA replication complex GINS protein PSF2 × 1 (Q9Y248) DNA replication complex GINS protein PSF3 × 1 (Q9BRX5) DNA replication complex GINS protein SLD5 × 1 (Q9BRT9) Cell division control protein 45 homolog × 1 (O75419) Leading strand DNA template × 1 Lagging strand DNA template × 1 ADENOSINE-5'-DIPHOSPHATE × 1 MAGNESIUM ION × 6 ADENOSINE-5'-TRIPHOSPHATE × 5 ZINC ION × 4 POTASSIUM ION × 2 water × 6 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name MCM3_HUMAN
Isoform P25205-2
PDB entities 2
Chains and sequence ranges Author chain 3; PDBConstruct 1–853; UniProt 1–853

DNA replication licensing factor MCM4

Homo sapiens

UniProt P33991

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 11 DNA 2 DNA replication licensing factor MCM2 × 1 (P49736) Isoform 2 of DNA replication licensing factor MCM3 × 1 (P25205) DNA replication licensing factor MCM5 × 1 (P33992) DNA replication licensing factor MCM6 × 1 (Q14566) DNA replication licensing factor MCM7 × 1 (P33993) DNA replication complex GINS protein PSF1 × 1 (Q14691) DNA replication complex GINS protein PSF2 × 1 (Q9Y248) DNA replication complex GINS protein PSF3 × 1 (Q9BRX5) DNA replication complex GINS protein SLD5 × 1 (Q9BRT9) Cell division control protein 45 homolog × 1 (O75419) Leading strand DNA template × 1 Lagging strand DNA template × 1 ADENOSINE-5'-DIPHOSPHATE × 1 MAGNESIUM ION × 6 ADENOSINE-5'-TRIPHOSPHATE × 5 ZINC ION × 4 POTASSIUM ION × 2 water × 6 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name MCM4_HUMAN
Isoform —
PDB entities 3
Chains and sequence ranges Author chain 4; PDBConstruct 21–883; UniProt 1–863

DNA replication licensing factor MCM5

Homo sapiens

UniProt P33992

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 11 DNA 2 DNA replication licensing factor MCM2 × 1 (P49736) Isoform 2 of DNA replication licensing factor MCM3 × 1 (P25205) DNA replication licensing factor MCM4 × 1 (P33991) DNA replication licensing factor MCM6 × 1 (Q14566) DNA replication licensing factor MCM7 × 1 (P33993) DNA replication complex GINS protein PSF1 × 1 (Q14691) DNA replication complex GINS protein PSF2 × 1 (Q9Y248) DNA replication complex GINS protein PSF3 × 1 (Q9BRX5) DNA replication complex GINS protein SLD5 × 1 (Q9BRT9) Cell division control protein 45 homolog × 1 (O75419) Leading strand DNA template × 1 Lagging strand DNA template × 1 ADENOSINE-5'-DIPHOSPHATE × 1 MAGNESIUM ION × 6 ADENOSINE-5'-TRIPHOSPHATE × 5 ZINC ION × 4 POTASSIUM ION × 2 water × 6 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name MCM5_HUMAN
Isoform —
PDB entities 4
Chains and sequence ranges Author chain 5; PDBConstruct 1–734; UniProt 1–734

DNA replication licensing factor MCM6

Homo sapiens

UniProt Q14566

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 11 DNA 2 DNA replication licensing factor MCM2 × 1 (P49736) Isoform 2 of DNA replication licensing factor MCM3 × 1 (P25205) DNA replication licensing factor MCM4 × 1 (P33991) DNA replication licensing factor MCM5 × 1 (P33992) DNA replication licensing factor MCM7 × 1 (P33993) DNA replication complex GINS protein PSF1 × 1 (Q14691) DNA replication complex GINS protein PSF2 × 1 (Q9Y248) DNA replication complex GINS protein PSF3 × 1 (Q9BRX5) DNA replication complex GINS protein SLD5 × 1 (Q9BRT9) Cell division control protein 45 homolog × 1 (O75419) Leading strand DNA template × 1 Lagging strand DNA template × 1 ADENOSINE-5'-DIPHOSPHATE × 1 MAGNESIUM ION × 6 ADENOSINE-5'-TRIPHOSPHATE × 5 ZINC ION × 4 POTASSIUM ION × 2 water × 6 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name MCM6_HUMAN
Isoform —
PDB entities 5
Chains and sequence ranges Author chain 6; PDBConstruct 1–821; UniProt 1–821

DNA replication licensing factor MCM7

Homo sapiens

UniProt P33993

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 11 DNA 2 DNA replication licensing factor MCM2 × 1 (P49736) Isoform 2 of DNA replication licensing factor MCM3 × 1 (P25205) DNA replication licensing factor MCM4 × 1 (P33991) DNA replication licensing factor MCM5 × 1 (P33992) DNA replication licensing factor MCM6 × 1 (Q14566) DNA replication complex GINS protein PSF1 × 1 (Q14691) DNA replication complex GINS protein PSF2 × 1 (Q9Y248) DNA replication complex GINS protein PSF3 × 1 (Q9BRX5) DNA replication complex GINS protein SLD5 × 1 (Q9BRT9) Cell division control protein 45 homolog × 1 (O75419) Leading strand DNA template × 1 Lagging strand DNA template × 1 ADENOSINE-5'-DIPHOSPHATE × 1 MAGNESIUM ION × 6 ADENOSINE-5'-TRIPHOSPHATE × 5 ZINC ION × 4 POTASSIUM ION × 2 water × 6 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name MCM7_HUMAN
Isoform —
PDB entities 6
Chains and sequence ranges Author chain 7; PDBConstruct 1–719; UniProt 1–719

DNA replication complex GINS protein PSF1

Homo sapiens

UniProt Q14691

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 11 DNA 2 DNA replication licensing factor MCM2 × 1 (P49736) Isoform 2 of DNA replication licensing factor MCM3 × 1 (P25205) DNA replication licensing factor MCM4 × 1 (P33991) DNA replication licensing factor MCM5 × 1 (P33992) DNA replication licensing factor MCM6 × 1 (Q14566) DNA replication licensing factor MCM7 × 1 (P33993) DNA replication complex GINS protein PSF2 × 1 (Q9Y248) DNA replication complex GINS protein PSF3 × 1 (Q9BRX5) DNA replication complex GINS protein SLD5 × 1 (Q9BRT9) Cell division control protein 45 homolog × 1 (O75419) Leading strand DNA template × 1 Lagging strand DNA template × 1 ADENOSINE-5'-DIPHOSPHATE × 1 MAGNESIUM ION × 6 ADENOSINE-5'-TRIPHOSPHATE × 5 ZINC ION × 4 POTASSIUM ION × 2 water × 6 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name PSF1_HUMAN
Isoform —
PDB entities 7
Chains and sequence ranges Author chain A; PDBConstruct 1–196; UniProt 1–196

DNA replication complex GINS protein PSF2

Homo sapiens

UniProt Q9Y248

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 11 DNA 2 DNA replication licensing factor MCM2 × 1 (P49736) Isoform 2 of DNA replication licensing factor MCM3 × 1 (P25205) DNA replication licensing factor MCM4 × 1 (P33991) DNA replication licensing factor MCM5 × 1 (P33992) DNA replication licensing factor MCM6 × 1 (Q14566) DNA replication licensing factor MCM7 × 1 (P33993) DNA replication complex GINS protein PSF1 × 1 (Q14691) DNA replication complex GINS protein PSF3 × 1 (Q9BRX5) DNA replication complex GINS protein SLD5 × 1 (Q9BRT9) Cell division control protein 45 homolog × 1 (O75419) Leading strand DNA template × 1 Lagging strand DNA template × 1 ADENOSINE-5'-DIPHOSPHATE × 1 MAGNESIUM ION × 6 ADENOSINE-5'-TRIPHOSPHATE × 5 ZINC ION × 4 POTASSIUM ION × 2 water × 6 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name PSF2_HUMAN
Isoform —
PDB entities 8
Chains and sequence ranges Author chain B; PDBConstruct 1–185; UniProt 1–185

DNA replication complex GINS protein PSF3

Homo sapiens

UniProt Q9BRX5

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 11 DNA 2 DNA replication licensing factor MCM2 × 1 (P49736) Isoform 2 of DNA replication licensing factor MCM3 × 1 (P25205) DNA replication licensing factor MCM4 × 1 (P33991) DNA replication licensing factor MCM5 × 1 (P33992) DNA replication licensing factor MCM6 × 1 (Q14566) DNA replication licensing factor MCM7 × 1 (P33993) DNA replication complex GINS protein PSF1 × 1 (Q14691) DNA replication complex GINS protein PSF2 × 1 (Q9Y248) DNA replication complex GINS protein SLD5 × 1 (Q9BRT9) Cell division control protein 45 homolog × 1 (O75419) Leading strand DNA template × 1 Lagging strand DNA template × 1 ADENOSINE-5'-DIPHOSPHATE × 1 MAGNESIUM ION × 6 ADENOSINE-5'-TRIPHOSPHATE × 5 ZINC ION × 4 POTASSIUM ION × 2 water × 6 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name PSF3_HUMAN
Isoform —
PDB entities 9
Chains and sequence ranges Author chain C; PDBConstruct 1–216; UniProt 1–216

DNA replication complex GINS protein SLD5

Homo sapiens

UniProt Q9BRT9

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 11 DNA 2 DNA replication licensing factor MCM2 × 1 (P49736) Isoform 2 of DNA replication licensing factor MCM3 × 1 (P25205) DNA replication licensing factor MCM4 × 1 (P33991) DNA replication licensing factor MCM5 × 1 (P33992) DNA replication licensing factor MCM6 × 1 (Q14566) DNA replication licensing factor MCM7 × 1 (P33993) DNA replication complex GINS protein PSF1 × 1 (Q14691) DNA replication complex GINS protein PSF2 × 1 (Q9Y248) DNA replication complex GINS protein PSF3 × 1 (Q9BRX5) Cell division control protein 45 homolog × 1 (O75419) Leading strand DNA template × 1 Lagging strand DNA template × 1 ADENOSINE-5'-DIPHOSPHATE × 1 MAGNESIUM ION × 6 ADENOSINE-5'-TRIPHOSPHATE × 5 ZINC ION × 4 POTASSIUM ION × 2 water × 6 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name SLD5_HUMAN
Isoform —
PDB entities 10
Chains and sequence ranges Author chain D; PDBConstruct 1–223; UniProt 1–223

Cell division control protein 45 homolog

Homo sapiens

UniProt O75419

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein–DNA Heteromer Protein 11 DNA 2 DNA replication licensing factor MCM2 × 1 (P49736) Isoform 2 of DNA replication licensing factor MCM3 × 1 (P25205) DNA replication licensing factor MCM4 × 1 (P33991) DNA replication licensing factor MCM5 × 1 (P33992) DNA replication licensing factor MCM6 × 1 (Q14566) DNA replication licensing factor MCM7 × 1 (P33993) DNA replication complex GINS protein PSF1 × 1 (Q14691) DNA replication complex GINS protein PSF2 × 1 (Q9Y248) DNA replication complex GINS protein PSF3 × 1 (Q9BRX5) DNA replication complex GINS protein SLD5 × 1 (Q9BRT9) Leading strand DNA template × 1 Lagging strand DNA template × 1 ADENOSINE-5'-DIPHOSPHATE × 1 MAGNESIUM ION × 6 ADENOSINE-5'-TRIPHOSPHATE × 5 ZINC ION × 4 POTASSIUM ION × 2 water × 6 Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name CDC45_HUMAN
Isoform —
PDB entities 11
Chains and sequence ranges Author chain E; PDBConstruct 1–566; UniProt 1–566

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_id9e2z
Deposition date deposition_date2024-10-23
Last revision last_revision2025-03-26
Structure title titleCryo-EM structure of human CMG helicase stalled at G4-containing DNA template
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.

9e2z__assembly_1__model_1

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

Download this curve (.dat)

9e2z__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.

9e2z__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)56.17 Å
Rg (electron density)56.08 Å
Total Rg56.09 Å
Atom count81374
Residues5025
Excluded volume725820 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 9e2z__assembly_1__model_1 13-meric (13) 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)