9qo0

Pre-activated 9-subunit COP9 signalosome and neddylated SCF (Skp1-Skp2-Cks1) complex structure

Method: ELECTRON MICROSCOPY
▼

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

COP9 signalosome complex subunit 4

Homo sapiens

UniProt Q9BT78

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 15 COP9 signalosome complex subunit 7b × 1 (Q9H9Q2) NEDD8 × 1 (Q15843) Cyclin-dependent kinases regulatory subunit 1 × 1 (P61024) COP9 signalosome complex subunit 9 × 1 (Q8WXC6) COP9 signalosome complex subunit 1 × 1 (Q13098) COP9 signalosome complex subunit 2 × 1 (P61201) COP9 signalosome complex subunit 3 × 1 (Q9UNS2) COP9 signalosome complex subunit 5 × 1 (Q92905) COP9 signalosome complex subunit 6 × 1 (Q7L5N1) COP9 signalosome complex subunit 8 × 1 (Q99627) Cullin-1 × 1 (Q13616) E3 ubiquitin-protein ligase RBX1 × 1 (P62877) S-phase kinase-associated protein 1 × 1 (P63208) S-phase kinase-associated protein 2 × 1 (Q13309) INOSITOL HEXAKISPHOSPHATE × 1 ZINC ION × 3 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name CSN4_HUMAN
Isoform —
PDB entities 1
Chains and sequence ranges Author chain D; PDBConstruct 1–406; UniProt 1–406

COP9 signalosome complex subunit 7b

Homo sapiens

UniProt Q9H9Q2

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 15 COP9 signalosome complex subunit 4 × 1 (Q9BT78) NEDD8 × 1 (Q15843) Cyclin-dependent kinases regulatory subunit 1 × 1 (P61024) COP9 signalosome complex subunit 9 × 1 (Q8WXC6) COP9 signalosome complex subunit 1 × 1 (Q13098) COP9 signalosome complex subunit 2 × 1 (P61201) COP9 signalosome complex subunit 3 × 1 (Q9UNS2) COP9 signalosome complex subunit 5 × 1 (Q92905) COP9 signalosome complex subunit 6 × 1 (Q7L5N1) COP9 signalosome complex subunit 8 × 1 (Q99627) Cullin-1 × 1 (Q13616) E3 ubiquitin-protein ligase RBX1 × 1 (P62877) S-phase kinase-associated protein 1 × 1 (P63208) S-phase kinase-associated protein 2 × 1 (Q13309) INOSITOL HEXAKISPHOSPHATE × 1 ZINC ION × 3 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name CSN7B_HUMAN
Isoform —
PDB entities 2
Chains and sequence ranges Author chain G; PDBConstruct 1–264; UniProt 1–264

NEDD8

Homo sapiens

UniProt Q15843

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 15 COP9 signalosome complex subunit 4 × 1 (Q9BT78) COP9 signalosome complex subunit 7b × 1 (Q9H9Q2) Cyclin-dependent kinases regulatory subunit 1 × 1 (P61024) COP9 signalosome complex subunit 9 × 1 (Q8WXC6) COP9 signalosome complex subunit 1 × 1 (Q13098) COP9 signalosome complex subunit 2 × 1 (P61201) COP9 signalosome complex subunit 3 × 1 (Q9UNS2) COP9 signalosome complex subunit 5 × 1 (Q92905) COP9 signalosome complex subunit 6 × 1 (Q7L5N1) COP9 signalosome complex subunit 8 × 1 (Q99627) Cullin-1 × 1 (Q13616) E3 ubiquitin-protein ligase RBX1 × 1 (P62877) S-phase kinase-associated protein 1 × 1 (P63208) S-phase kinase-associated protein 2 × 1 (Q13309) INOSITOL HEXAKISPHOSPHATE × 1 ZINC ION × 3 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name NEDD8_HUMAN
Isoform —
PDB entities 3
Chains and sequence ranges Author chain K; PDBConstruct 1–76; UniProt 1–76

Cyclin-dependent kinases regulatory subunit 1

Homo sapiens

UniProt P61024

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 15 COP9 signalosome complex subunit 4 × 1 (Q9BT78) COP9 signalosome complex subunit 7b × 1 (Q9H9Q2) NEDD8 × 1 (Q15843) COP9 signalosome complex subunit 9 × 1 (Q8WXC6) COP9 signalosome complex subunit 1 × 1 (Q13098) COP9 signalosome complex subunit 2 × 1 (P61201) COP9 signalosome complex subunit 3 × 1 (Q9UNS2) COP9 signalosome complex subunit 5 × 1 (Q92905) COP9 signalosome complex subunit 6 × 1 (Q7L5N1) COP9 signalosome complex subunit 8 × 1 (Q99627) Cullin-1 × 1 (Q13616) E3 ubiquitin-protein ligase RBX1 × 1 (P62877) S-phase kinase-associated protein 1 × 1 (P63208) S-phase kinase-associated protein 2 × 1 (Q13309) INOSITOL HEXAKISPHOSPHATE × 1 ZINC ION × 3 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name CKS1_HUMAN
Isoform —
PDB entities 4
Chains and sequence ranges Author chain N; PDBConstruct 1–79; UniProt 1–79

COP9 signalosome complex subunit 9

Homo sapiens

UniProt Q8WXC6

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 15 COP9 signalosome complex subunit 4 × 1 (Q9BT78) COP9 signalosome complex subunit 7b × 1 (Q9H9Q2) NEDD8 × 1 (Q15843) Cyclin-dependent kinases regulatory subunit 1 × 1 (P61024) COP9 signalosome complex subunit 1 × 1 (Q13098) COP9 signalosome complex subunit 2 × 1 (P61201) COP9 signalosome complex subunit 3 × 1 (Q9UNS2) COP9 signalosome complex subunit 5 × 1 (Q92905) COP9 signalosome complex subunit 6 × 1 (Q7L5N1) COP9 signalosome complex subunit 8 × 1 (Q99627) Cullin-1 × 1 (Q13616) E3 ubiquitin-protein ligase RBX1 × 1 (P62877) S-phase kinase-associated protein 1 × 1 (P63208) S-phase kinase-associated protein 2 × 1 (Q13309) INOSITOL HEXAKISPHOSPHATE × 1 ZINC ION × 3 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name CSN9_HUMAN
Isoform —
PDB entities 5
Chains and sequence ranges Author chain P; PDBConstruct 1–57; UniProt 1–57

COP9 signalosome complex subunit 1

Homo sapiens

UniProt Q13098

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 15 COP9 signalosome complex subunit 4 × 1 (Q9BT78) COP9 signalosome complex subunit 7b × 1 (Q9H9Q2) NEDD8 × 1 (Q15843) Cyclin-dependent kinases regulatory subunit 1 × 1 (P61024) COP9 signalosome complex subunit 9 × 1 (Q8WXC6) COP9 signalosome complex subunit 2 × 1 (P61201) COP9 signalosome complex subunit 3 × 1 (Q9UNS2) COP9 signalosome complex subunit 5 × 1 (Q92905) COP9 signalosome complex subunit 6 × 1 (Q7L5N1) COP9 signalosome complex subunit 8 × 1 (Q99627) Cullin-1 × 1 (Q13616) E3 ubiquitin-protein ligase RBX1 × 1 (P62877) S-phase kinase-associated protein 1 × 1 (P63208) S-phase kinase-associated protein 2 × 1 (Q13309) INOSITOL HEXAKISPHOSPHATE × 1 ZINC ION × 3 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name CSN1_HUMAN
Isoform —
PDB entities 6
Chains and sequence ranges Author chain A; PDBConstruct 1–491; UniProt 1–491

COP9 signalosome complex subunit 2

Homo sapiens

UniProt P61201

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 15 COP9 signalosome complex subunit 4 × 1 (Q9BT78) COP9 signalosome complex subunit 7b × 1 (Q9H9Q2) NEDD8 × 1 (Q15843) Cyclin-dependent kinases regulatory subunit 1 × 1 (P61024) COP9 signalosome complex subunit 9 × 1 (Q8WXC6) COP9 signalosome complex subunit 1 × 1 (Q13098) COP9 signalosome complex subunit 3 × 1 (Q9UNS2) COP9 signalosome complex subunit 5 × 1 (Q92905) COP9 signalosome complex subunit 6 × 1 (Q7L5N1) COP9 signalosome complex subunit 8 × 1 (Q99627) Cullin-1 × 1 (Q13616) E3 ubiquitin-protein ligase RBX1 × 1 (P62877) S-phase kinase-associated protein 1 × 1 (P63208) S-phase kinase-associated protein 2 × 1 (Q13309) INOSITOL HEXAKISPHOSPHATE × 1 ZINC ION × 3 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name CSN2_HUMAN
Isoform —
PDB entities 7
Chains and sequence ranges Author chain B; PDBConstruct 1–443; UniProt 1–443

COP9 signalosome complex subunit 3

Homo sapiens

UniProt Q9UNS2

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 15 COP9 signalosome complex subunit 4 × 1 (Q9BT78) COP9 signalosome complex subunit 7b × 1 (Q9H9Q2) NEDD8 × 1 (Q15843) Cyclin-dependent kinases regulatory subunit 1 × 1 (P61024) COP9 signalosome complex subunit 9 × 1 (Q8WXC6) COP9 signalosome complex subunit 1 × 1 (Q13098) COP9 signalosome complex subunit 2 × 1 (P61201) COP9 signalosome complex subunit 5 × 1 (Q92905) COP9 signalosome complex subunit 6 × 1 (Q7L5N1) COP9 signalosome complex subunit 8 × 1 (Q99627) Cullin-1 × 1 (Q13616) E3 ubiquitin-protein ligase RBX1 × 1 (P62877) S-phase kinase-associated protein 1 × 1 (P63208) S-phase kinase-associated protein 2 × 1 (Q13309) INOSITOL HEXAKISPHOSPHATE × 1 ZINC ION × 3 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name CSN3_HUMAN
Isoform —
PDB entities 8
Chains and sequence ranges Author chain C; PDBConstruct 1–423; UniProt 1–423

COP9 signalosome complex subunit 5

Homo sapiens

UniProt Q92905

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 15 COP9 signalosome complex subunit 4 × 1 (Q9BT78) COP9 signalosome complex subunit 7b × 1 (Q9H9Q2) NEDD8 × 1 (Q15843) Cyclin-dependent kinases regulatory subunit 1 × 1 (P61024) COP9 signalosome complex subunit 9 × 1 (Q8WXC6) COP9 signalosome complex subunit 1 × 1 (Q13098) COP9 signalosome complex subunit 2 × 1 (P61201) COP9 signalosome complex subunit 3 × 1 (Q9UNS2) COP9 signalosome complex subunit 6 × 1 (Q7L5N1) COP9 signalosome complex subunit 8 × 1 (Q99627) Cullin-1 × 1 (Q13616) E3 ubiquitin-protein ligase RBX1 × 1 (P62877) S-phase kinase-associated protein 1 × 1 (P63208) S-phase kinase-associated protein 2 × 1 (Q13309) INOSITOL HEXAKISPHOSPHATE × 1 ZINC ION × 3 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name CSN5_HUMAN
Isoform —
PDB entities 9
Chains and sequence ranges Author chain E; PDBConstruct 1–334; UniProt 1–334

COP9 signalosome complex subunit 6

Homo sapiens

UniProt Q7L5N1

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 15 COP9 signalosome complex subunit 4 × 1 (Q9BT78) COP9 signalosome complex subunit 7b × 1 (Q9H9Q2) NEDD8 × 1 (Q15843) Cyclin-dependent kinases regulatory subunit 1 × 1 (P61024) COP9 signalosome complex subunit 9 × 1 (Q8WXC6) COP9 signalosome complex subunit 1 × 1 (Q13098) COP9 signalosome complex subunit 2 × 1 (P61201) COP9 signalosome complex subunit 3 × 1 (Q9UNS2) COP9 signalosome complex subunit 5 × 1 (Q92905) COP9 signalosome complex subunit 8 × 1 (Q99627) Cullin-1 × 1 (Q13616) E3 ubiquitin-protein ligase RBX1 × 1 (P62877) S-phase kinase-associated protein 1 × 1 (P63208) S-phase kinase-associated protein 2 × 1 (Q13309) INOSITOL HEXAKISPHOSPHATE × 1 ZINC ION × 3 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name CSN6_HUMAN
Isoform —
PDB entities 10
Chains and sequence ranges Author chain F; PDBConstruct 1–327; UniProt 1–327

COP9 signalosome complex subunit 8

Homo sapiens

UniProt Q99627

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 15 COP9 signalosome complex subunit 4 × 1 (Q9BT78) COP9 signalosome complex subunit 7b × 1 (Q9H9Q2) NEDD8 × 1 (Q15843) Cyclin-dependent kinases regulatory subunit 1 × 1 (P61024) COP9 signalosome complex subunit 9 × 1 (Q8WXC6) COP9 signalosome complex subunit 1 × 1 (Q13098) COP9 signalosome complex subunit 2 × 1 (P61201) COP9 signalosome complex subunit 3 × 1 (Q9UNS2) COP9 signalosome complex subunit 5 × 1 (Q92905) COP9 signalosome complex subunit 6 × 1 (Q7L5N1) Cullin-1 × 1 (Q13616) E3 ubiquitin-protein ligase RBX1 × 1 (P62877) S-phase kinase-associated protein 1 × 1 (P63208) S-phase kinase-associated protein 2 × 1 (Q13309) INOSITOL HEXAKISPHOSPHATE × 1 ZINC ION × 3 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name CSN8_HUMAN
Isoform —
PDB entities 11
Chains and sequence ranges Author chain H; PDBConstruct 1–209; UniProt 1–209

Cullin-1

Homo sapiens

UniProt Q13616

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 15 COP9 signalosome complex subunit 4 × 1 (Q9BT78) COP9 signalosome complex subunit 7b × 1 (Q9H9Q2) NEDD8 × 1 (Q15843) Cyclin-dependent kinases regulatory subunit 1 × 1 (P61024) COP9 signalosome complex subunit 9 × 1 (Q8WXC6) COP9 signalosome complex subunit 1 × 1 (Q13098) COP9 signalosome complex subunit 2 × 1 (P61201) COP9 signalosome complex subunit 3 × 1 (Q9UNS2) COP9 signalosome complex subunit 5 × 1 (Q92905) COP9 signalosome complex subunit 6 × 1 (Q7L5N1) COP9 signalosome complex subunit 8 × 1 (Q99627) E3 ubiquitin-protein ligase RBX1 × 1 (P62877) S-phase kinase-associated protein 1 × 1 (P63208) S-phase kinase-associated protein 2 × 1 (Q13309) INOSITOL HEXAKISPHOSPHATE × 1 ZINC ION × 3 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name CUL1_HUMAN
Isoform —
PDB entities 12
Chains and sequence ranges Author chain I; PDBConstruct 1–776; UniProt 1–776

E3 ubiquitin-protein ligase RBX1

Homo sapiens

UniProt P62877

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 15 COP9 signalosome complex subunit 4 × 1 (Q9BT78) COP9 signalosome complex subunit 7b × 1 (Q9H9Q2) NEDD8 × 1 (Q15843) Cyclin-dependent kinases regulatory subunit 1 × 1 (P61024) COP9 signalosome complex subunit 9 × 1 (Q8WXC6) COP9 signalosome complex subunit 1 × 1 (Q13098) COP9 signalosome complex subunit 2 × 1 (P61201) COP9 signalosome complex subunit 3 × 1 (Q9UNS2) COP9 signalosome complex subunit 5 × 1 (Q92905) COP9 signalosome complex subunit 6 × 1 (Q7L5N1) COP9 signalosome complex subunit 8 × 1 (Q99627) Cullin-1 × 1 (Q13616) S-phase kinase-associated protein 1 × 1 (P63208) S-phase kinase-associated protein 2 × 1 (Q13309) INOSITOL HEXAKISPHOSPHATE × 1 ZINC ION × 3 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name RBX1_HUMAN
Isoform —
PDB entities 13
Chains and sequence ranges Author chain J; PDBConstruct 1–108; UniProt 1–108

S-phase kinase-associated protein 1

Homo sapiens

UniProt P63208

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 15 COP9 signalosome complex subunit 4 × 1 (Q9BT78) COP9 signalosome complex subunit 7b × 1 (Q9H9Q2) NEDD8 × 1 (Q15843) Cyclin-dependent kinases regulatory subunit 1 × 1 (P61024) COP9 signalosome complex subunit 9 × 1 (Q8WXC6) COP9 signalosome complex subunit 1 × 1 (Q13098) COP9 signalosome complex subunit 2 × 1 (P61201) COP9 signalosome complex subunit 3 × 1 (Q9UNS2) COP9 signalosome complex subunit 5 × 1 (Q92905) COP9 signalosome complex subunit 6 × 1 (Q7L5N1) COP9 signalosome complex subunit 8 × 1 (Q99627) Cullin-1 × 1 (Q13616) E3 ubiquitin-protein ligase RBX1 × 1 (P62877) S-phase kinase-associated protein 2 × 1 (Q13309) INOSITOL HEXAKISPHOSPHATE × 1 ZINC ION × 3 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name SKP1_HUMAN
Isoform —
PDB entities 14
Chains and sequence ranges Author chain L; PDBConstruct 1–163; UniProt 1–163

S-phase kinase-associated protein 2

Homo sapiens

UniProt Q13309

State in the Current Structure

Assembly Physical composition Protein state Molecular copy count Associated components Data consistency
1 Protein heterocomplex Heteromer Protein 15 COP9 signalosome complex subunit 4 × 1 (Q9BT78) COP9 signalosome complex subunit 7b × 1 (Q9H9Q2) NEDD8 × 1 (Q15843) Cyclin-dependent kinases regulatory subunit 1 × 1 (P61024) COP9 signalosome complex subunit 9 × 1 (Q8WXC6) COP9 signalosome complex subunit 1 × 1 (Q13098) COP9 signalosome complex subunit 2 × 1 (P61201) COP9 signalosome complex subunit 3 × 1 (Q9UNS2) COP9 signalosome complex subunit 5 × 1 (Q92905) COP9 signalosome complex subunit 6 × 1 (Q7L5N1) COP9 signalosome complex subunit 8 × 1 (Q99627) Cullin-1 × 1 (Q13616) E3 ubiquitin-protein ligase RBX1 × 1 (P62877) S-phase kinase-associated protein 1 × 1 (P63208) INOSITOL HEXAKISPHOSPHATE × 1 ZINC ION × 3 Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence
UniProt name SKP2_HUMAN
Isoform —
PDB entities 15
Chains and sequence ranges Author chain M; PDBConstruct 1–424; UniProt 1–424

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.

▼

2. Structure Basics 2. Structure Basics

Entry ID entry_id9qo0
Deposition date deposition_date2025-03-25
Structure title titlePre-activated 9-subunit COP9 signalosome and neddylated SCF (Skp1-Skp2-Cks1) complex structure
Keywords keywordsE3 ligases, COP9 signalosome, LIGASE; LIGASE
Experimental Method methodELECTRON MICROSCOPY
▼

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.

9qo0__assembly_1__model_1

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

Download this curve (.dat)

9qo0__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.

9qo0__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)59.90 Å
Rg (electron density)59.73 Å
Total Rg59.68 Å
Atom count29373
Residues3744
Excluded volume524770 ų
Maximum q0.500 Å⁻¹
Assembly Model Structure unit Oligomeric description Status CRYSOL Actions
1 1 9qo0__assembly_1__model_1 15-meric (15) Success 4.1.3-1-20251215 (887e7ef) View Download
▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (17)

▶

7. Citations (1)