9ny4

USP21 bound to H2AK119ub nucleosome

Method: ELECTRON MICROSCOPY Dmax: 127.3 Å Quality: REASONABLE

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

Histone H3.2

Xenopus laevis

UniProt P84233

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: 12-meric(12) Consistent with all polymer counts Chain A; UniProt 1–136 Chain E; UniProt 1–136 Not recorded Histone H4 × 2 (P62799) Histone H2A type 1 × 2 (P06897) Histone H2B 1.1 × 2 (P02281) 601 DNA (145-MER) × 1 601 DNA (145-MER) × 1 Ubiquitin carboxyl-terminal hydrolase 21 × 1 (Q9UK80) Ubiquitin × 1 (J3QS39) ELECTRON MICROSCOPY cryo-EM buffer:pH 7.5 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 2.98 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.

230 other PDB entries and 239 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name H32_XENLA
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–136; UniProt 1–136 Author chain E; PDBConstruct 1–136; UniProt 1–136

Histone H4

Xenopus laevis

UniProt P62799

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: 12-meric(12) Consistent with all polymer counts Chain B; UniProt 1–103 Chain F; UniProt 1–103 Not recorded Histone H3.2 × 2 (P84233) Histone H2A type 1 × 2 (P06897) Histone H2B 1.1 × 2 (P02281) 601 DNA (145-MER) × 1 601 DNA (145-MER) × 1 Ubiquitin carboxyl-terminal hydrolase 21 × 1 (Q9UK80) Ubiquitin × 1 (J3QS39) ELECTRON MICROSCOPY cryo-EM buffer:pH 7.5 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 2.98 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.

354 other PDB entries and 370 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name H4_XENLA
Isoform
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 1–103; UniProt 1–103 Author chain F; PDBConstruct 1–103; UniProt 1–103

Histone H2A type 1

Xenopus laevis

UniProt P06897

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: 12-meric(12) Consistent with all polymer counts Chain C; UniProt 1–130 Chain G; UniProt 1–130 Not recorded Histone H3.2 × 2 (P84233) Histone H4 × 2 (P62799) Histone H2B 1.1 × 2 (P02281) 601 DNA (145-MER) × 1 601 DNA (145-MER) × 1 Ubiquitin carboxyl-terminal hydrolase 21 × 1 (Q9UK80) Ubiquitin × 1 (J3QS39) ELECTRON MICROSCOPY cryo-EM buffer:pH 7.5 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 2.98 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.

136 other PDB entries and 144 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name H2A1_XENLA
Isoform
PDB entities 3
Chains and sequence ranges Author chain C; PDBConstruct 1–130; UniProt 1–130 Author chain G; PDBConstruct 1–130; UniProt 1–130

Histone H2B 1.1

Xenopus laevis

UniProt P02281

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: 12-meric(12) Consistent with all polymer counts Chain D; UniProt 5–126 Chain H; UniProt 5–126 Not recorded Histone H3.2 × 2 (P84233) Histone H4 × 2 (P62799) Histone H2A type 1 × 2 (P06897) 601 DNA (145-MER) × 1 601 DNA (145-MER) × 1 Ubiquitin carboxyl-terminal hydrolase 21 × 1 (Q9UK80) Ubiquitin × 1 (J3QS39) ELECTRON MICROSCOPY cryo-EM buffer:pH 7.5 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 2.98 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.

310 other PDB entries and 327 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name H2B11_XENLA
Isoform
PDB entities 4
Chains and sequence ranges Author chain D; PDBConstruct 2–123; UniProt 5–126 Author chain H; PDBConstruct 2–123; UniProt 5–126

Ubiquitin carboxyl-terminal hydrolase 21

Homo sapiens

UniProt Q9UK80

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: 12-meric(12) Consistent with all polymer counts Chain K; UniProt 196–565 Not recorded Histone H3.2 × 2 (P84233) Histone H4 × 2 (P62799) Histone H2A type 1 × 2 (P06897) Histone H2B 1.1 × 2 (P02281) 601 DNA (145-MER) × 1 601 DNA (145-MER) × 1 Ubiquitin × 1 (J3QS39) ELECTRON MICROSCOPY cryo-EM buffer:pH 7.5 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 2.98 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 8 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name UBP21_HUMAN
Isoform
PDB entities 7
Chains and sequence ranges Author chain K; PDBConstruct 1–370; UniProt 196–565

Ubiquitin

Homo sapiens

UniProt J3QS39

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: 12-meric(12) Consistent with all polymer counts Chain U; UniProt 1–76 Not recorded Histone H3.2 × 2 (P84233) Histone H4 × 2 (P62799) Histone H2A type 1 × 2 (P06897) Histone H2B 1.1 × 2 (P02281) 601 DNA (145-MER) × 1 601 DNA (145-MER) × 1 Ubiquitin carboxyl-terminal hydrolase 21 × 1 (Q9UK80) ELECTRON MICROSCOPY cryo-EM buffer:pH 7.5 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 2.98 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.

38 other PDB entries and 46 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name J3QS39_HUMAN
Isoform
PDB entities 8
Chains and sequence ranges Author chain U; PDBConstruct 5–80; UniProt 1–76

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 9ny4

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 9ny4
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2. Structure Basics 2. Structure Basics

Entry ID entry_id9ny4
Deposition date deposition_date2025-03-26
Structure title titleUSP21 bound to H2AK119ub nucleosome
Keywords keywordsDeubiquitinase, DNA-binding protein, DNA, NUCLEAR PROTEIN; NUCLEAR PROTEIN
Experimental Method methodELECTRON MICROSCOPY

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

Radius of gyration Rg (Guinier) rg_guinier43.91
Radius of gyration Rg (electron density) rg_electron41.86
Forward intensity I(0) i01142050000.00
Molecular weight molecular_weight217680.0 kDa
Excluded volume excluded_volume247340 ų
Envelope volume envelope_volume401400 ų
Hydration-shell volume shell_volume77565 ų
Envelope diameter envelope_diameter132.4
Shell Rg shell_rg49.47
Envelope Rg envelope_rg40.64
Shape Rg shape_rg41.74
Total Rg total_rg42.43
Total atoms total_atoms14936
Residues n_residues1414
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 dmax127.3
Rg (real space) rg_real43.59
Rg uncertainty (real space) rg_real_error0.52
I(0) (real space) i0_real1.1420e+09
I(0) uncertainty (real space) i0_real_error1.6170e+07
Rg (reciprocal space) rg_reciprocal43.91
I(0) (reciprocal space) i0_reciprocal1142000000.0000
Solution quality estimate total_estimate0.6139
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary56.6
Skewness Skewness skewness-0.021
Kurtosis Kurtosis kurtosis-0.666
Angular range angular_range— – 0.1800 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha96550000.0000
Real-space data points n_real_points37
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.972; Stabil: 1.000; Sysdev: 0.032; Positv: 1.000; Valcen: 0.964; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (8)

8. Citations (1)

9. Files and Curves (10)