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Ubiquitin ligation to F-box protein substrates by scf-rbr E3-E3 super- assembly: NEDD8-CUL1-RBX1-UBE2L3~UB~ARIH1.

Analyse Ubiquitin ligation to F-box protein substrates by scf-rbr E3-E3 super… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
7B5N
Type
protein
Length
1,229 residues
Chains
6
Method
electron microscopy
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Cullin-1; E3 ubiquitin-protein ligase ARIH1; Polyubiquitin-C; NEDD8; E3 ubiquitin-protein…
EC
2.3.2.31, 2.3.2.27, 2.3.2.32, 2.3.2.23
UniProt
Q13616, Q9Y4X5, P0CG48, Q15843, P62877, P68036
Ligands
SY8, ZN
Pockets
16 · best druggability 0.81

Structure

electron microscopy · 6 distinct chains · 44% helix, 12% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
CCullin-1protein42355% helix, 8% strandQ13616
HE3 ubiquitin-protein ligase ARIH1 (EC 2.3.2.31)protein42354% helix, 6% strandQ9Y4X5
UPolyubiquitin-Cprotein7515% helix, 37% strandP0CG48
NNEDD8protein7616% helix, 28% strandQ15843
RE3 ubiquitin-protein ligase RBX1 (EC 2.3.2.27, 2.3.2.32)protein8112% helix, 21% strandP62877
DUbiquitin-conjugating enzyme E2 L3 (EC 2.3.2.23)protein15135% helix, 15% strandP68036

Ligands and binding sites

  • SY8 · 5-azanylpentan-2-one · ligand · chains H, U, D
  • ZN · Zinc ion · metal · 9 copies · chains H, R

Binding sites are the residues within 4.5 Å of a ligand's heavy atoms.

Pockets

16 pockets found on a 1 Å grid, 6 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
17090.810.8594empty
26480.730.7953empty
35880.650.7663empty
4760.600.8914empty
53780.600.7643empty

Interfaces

7 interfaces between chains.

  • C–R · 1828 Ų buried · 28 hydrogen bonds · protein-protein
  • H–U · 1335 Ų buried · 11 hydrogen bonds · protein-protein
  • H–D · 959 Ų buried · 8 hydrogen bonds · protein-protein
  • C–H · 793 Ų buried · 3 hydrogen bonds · protein-protein
  • H–R · 625 Ų buried · 3 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 3 covalent (covalent ligand).

Compared structures

  • 7B5N · Ubiquitin ligation to F-box protein substrates by SCF-RBR E3-E3 super-assembly… · the same entry in another collection · chain D against D, TM-score 1.00
  • P68036 · AlphaFold monomer V2.0 prediction for ubiquitin-conjugating enzyme E2 L3 (P68036) · a predicted model of the same protein · chain D against A, TM-score 0.97
  • Q15843 · AlphaFold monomer V2.0 prediction for NEDD8 (Q15843) · a predicted model of the same protein · chain N against A, TM-score 0.90
  • Q13616 · AlphaFold monomer V2.0 prediction for cullin-1 (Q13616) · a predicted model of the same protein · chain C against A, TM-score 0.79
  • P62877 · AlphaFold monomer V2.0 prediction for E3 ubiquitin-protein ligase RBX1 (P62877) · a predicted model of the same protein · chain R against A, TM-score 0.76
  • Q9Y4X5 · AlphaFold monomer V2.0 prediction for E3 ubiquitin-protein ligase ARIH1 (Q9Y4X5) · a predicted model of the same protein · chain H against A, TM-score 0.58

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