8osk

Cryo-EM structure of CLOCK-BMAL1 bound to a nucleosomal E-box at position SHL+5.8 (composite map)

Method: ELECTRON MICROSCOPY Dmax: 142.1 Å Quality: EXCELLENT

1. Protein Identity and Related Structures Protein Identity & Related Structures

Histone H3.1

Homo sapiens

UniProt P68431

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein–DNA Heteromer Protein × 10 DNA 2 PDB declaration: dodecameric(12) Consistent with all polymer counts Chain A; UniProt 1–136 Chain E; UniProt 1–136 Not recorded Histone H4 × 2 (P62805) Histone H2A type 1-B/E × 2 (P04908) Histone H2B type 1-J × 2 (P06899) DNA (124-MER) × 1 DNA (124-MER) × 1 Circadian locomoter output cycles protein kaput × 1 (O08785) Basic helix-loop-helix ARNT-like protein 1 × 1 (Q9WTL8) ELECTRON MICROSCOPY cryo-EM buffer:pH 7.2 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 3.60 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

402 other PDB entries and 475 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name H31_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 4–139; UniProt 1–136 Author chain E; PDBConstruct 4–139; UniProt 1–136

Histone H4

Homo sapiens

UniProt P62805

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein–DNA Heteromer Protein × 10 DNA 2 PDB declaration: dodecameric(12) Consistent with all polymer counts Chain B; UniProt 1–103 Chain F; UniProt 1–103 Not recorded Histone H3.1 × 2 (P68431) Histone H2A type 1-B/E × 2 (P04908) Histone H2B type 1-J × 2 (P06899) DNA (124-MER) × 1 DNA (124-MER) × 1 Circadian locomoter output cycles protein kaput × 1 (O08785) Basic helix-loop-helix ARNT-like protein 1 × 1 (Q9WTL8) ELECTRON MICROSCOPY cryo-EM buffer:pH 7.2 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 3.60 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

581 other PDB entries and 633 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name H4_HUMAN
Isoform
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 4–106; UniProt 1–103 Author chain F; PDBConstruct 4–106; UniProt 1–103

Histone H2A type 1-B/E

Homo sapiens

UniProt P04908

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein–DNA Heteromer Protein × 10 DNA 2 PDB declaration: dodecameric(12) Consistent with all polymer counts Chain C; UniProt 1–130 Chain G; UniProt 1–130 Not recorded Histone H3.1 × 2 (P68431) Histone H4 × 2 (P62805) Histone H2B type 1-J × 2 (P06899) DNA (124-MER) × 1 DNA (124-MER) × 1 Circadian locomoter output cycles protein kaput × 1 (O08785) Basic helix-loop-helix ARNT-like protein 1 × 1 (Q9WTL8) ELECTRON MICROSCOPY cryo-EM buffer:pH 7.2 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 3.60 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

343 other PDB entries and 350 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name H2A1B_HUMAN
Isoform
PDB entities 3
Chains and sequence ranges Author chain C; PDBConstruct 4–133; UniProt 1–130 Author chain G; PDBConstruct 4–133; UniProt 1–130

Histone H2B type 1-J

Homo sapiens

UniProt P06899

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein–DNA Heteromer Protein × 10 DNA 2 PDB declaration: dodecameric(12) Consistent with all polymer counts Chain D; UniProt 1–125 Chain H; UniProt 1–125 Not recorded Histone H3.1 × 2 (P68431) Histone H4 × 2 (P62805) Histone H2A type 1-B/E × 2 (P04908) DNA (124-MER) × 1 DNA (124-MER) × 1 Circadian locomoter output cycles protein kaput × 1 (O08785) Basic helix-loop-helix ARNT-like protein 1 × 1 (Q9WTL8) ELECTRON MICROSCOPY cryo-EM buffer:pH 7.2 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 3.60 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

290 other PDB entries and 301 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name H2B1J_HUMAN
Isoform
PDB entities 4
Chains and sequence ranges Author chain D; PDBConstruct 4–128; UniProt 1–125 Author chain H; PDBConstruct 4–128; UniProt 1–125

Circadian locomoter output cycles protein kaput

Mus musculus

UniProt O08785

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein–DNA Heteromer Protein × 10 DNA 2 PDB declaration: dodecameric(12) Consistent with all polymer counts Chain M; UniProt 26–395 Not recorded Histone H3.1 × 2 (P68431) Histone H4 × 2 (P62805) Histone H2A type 1-B/E × 2 (P04908) Histone H2B type 1-J × 2 (P06899) DNA (124-MER) × 1 DNA (124-MER) × 1 Basic helix-loop-helix ARNT-like protein 1 × 1 (Q9WTL8) ELECTRON MICROSCOPY cryo-EM buffer:pH 7.2 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 3.60 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

5 other PDB entries and 10 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CLOCK_MOUSE
Isoform
PDB entities 7
Chains and sequence ranges Author chain M; PDBConstruct 6–375; UniProt 26–395

Basic helix-loop-helix ARNT-like protein 1

Mus musculus

UniProt Q9WTL8

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein–DNA Heteromer Protein × 10 DNA 2 PDB declaration: dodecameric(12) Consistent with all polymer counts Chain N; UniProt 69–447 Not recorded Histone H3.1 × 2 (P68431) Histone H4 × 2 (P62805) Histone H2A type 1-B/E × 2 (P04908) Histone H2B type 1-J × 2 (P06899) DNA (124-MER) × 1 DNA (124-MER) × 1 Circadian locomoter output cycles protein kaput × 1 (O08785) ELECTRON MICROSCOPY cryo-EM buffer:pH 7.2 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 3.60 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

3 other PDB entries and 3 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name BMAL1_MOUSE
Isoform
PDB entities 8
Chains and sequence ranges Author chain N; PDBConstruct 6–384; UniProt 69–447

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.

SAXS scattering curve SAXS Profile

SAXS profile for 8osk

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 8osk
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2. Structure Basics 2. Structure Basics

Entry ID entry_id8osk
Deposition date deposition_date2023-04-19
Structure title titleCryo-EM structure of CLOCK-BMAL1 bound to a nucleosomal E-box at position SHL+5.8 (composite map)
Keywords keywordsE-box, transcription factor, circadian clock, GENE REGULATION; GENE REGULATION
Experimental Method methodELECTRON MICROSCOPY

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier44.72
Radius of gyration Rg (electron density) rg_electron43.02
Forward intensity I(0) i01017830000.00
Molecular weight molecular_weight202830.0 kDa
Excluded volume excluded_volume228700 ų
Envelope volume envelope_volume379980 ų
Hydration-shell volume shell_volume72530 ų
Envelope diameter envelope_diameter143.6
Shell Rg shell_rg48.73
Envelope Rg envelope_rg42.85
Shape Rg shape_rg43.03
Total Rg total_rg43.21
Total atoms total_atoms13995
Residues n_residues1591
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax142.1
Rg (real space) rg_real44.50
Rg uncertainty (real space) rg_real_error1.27
I(0) (real space) i0_real1.0180e+09
I(0) uncertainty (real space) i0_real_error1.8440e+07
Rg (reciprocal space) rg_reciprocal44.72
I(0) (reciprocal space) i0_reciprocal1018000000.0000
Solution quality estimate total_estimate0.9021
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary134.0
Skewness Skewness skewness0.095
Kurtosis Kurtosis kurtosis-0.612
Angular range angular_range— – 0.1750 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha58920000.0000
Real-space data points n_real_points36
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.931; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.992; Smooth: 0.938

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (8)

7. Fold Classification (SCOP + CATH) 3 domains

CATH v4.4 (3 domains)

Domain ID domain_id8oskM01
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology450 — Beta-Lactamase
Homologous superfamily homologous superfamily20 — PAS domain
Domain ID domain_id8oskM02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology450 — Beta-Lactamase
Homologous superfamily homologous superfamily20 — PAS domain
Domain ID domain_id8oskN01
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology450 — Beta-Lactamase
Homologous superfamily homologous superfamily20 — PAS domain

8. Citations (1)

9. Files and Curves (10)