1ldj

X-ray diffraction
3Å resolution

Structure of the Cul1-Rbx1-Skp1-F boxSkp2 SCF Ubiquitin Ligase Complex

Released:

Function and Biology Details

Reactions catalysed:
S-ubiquitinyl-[E2 ubiquitin-conjugating enzyme]-L-cysteine + [acceptor protein]-L-lysine = [E2 ubiquitin-conjugating enzyme]-L-cysteine + N(6)-ubiquitinyl-[acceptor protein]-L-lysine
S-[NEDD8-protein]-yl-[E2 NEDD8-conjugating enzyme]-L-cysteine + [cullin]-L-lysine = [E2 NEDD8-conjugating enzyme]-L-cysteine + N(6)-[NEDD8-protein]-yl-[cullin]-L-lysine
Biochemical function:

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
PDBe Complex ID:
PDB-CPX-158746 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Cullin-1 Chain: A
Molecule details ›
Chain: A
Length: 760 amino acids
Theoretical weight: 88.07 KDa
Source organism: Homo sapiens
Expression system: Spodoptera frugiperda
UniProt:
  • Canonical: Q13616 (Residues: 17-776; Coverage: 98%)
Gene name: CUL1
Sequence domains:
Structure domains:
E3 ubiquitin-protein ligase RBX1, N-terminally processed Chain: B
Molecule details ›
Chain: B
Length: 90 amino acids
Theoretical weight: 10.66 KDa
Source organism: Homo sapiens
Expression system: Spodoptera frugiperda
UniProt:
  • Canonical: P62877 (Residues: 19-108; Coverage: 83%)
Gene names: RBX1, RNF75, ROC1
Sequence domains: RING-H2 zinc finger domain
Structure domains: Zinc/RING finger domain, C3HC4 (zinc finger)

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: CHESS BEAMLINE F1
Spacegroup: P21
Unit cell:
a: 113.974Å b: 49.968Å c: 135.883Å
α: 90° β: 107.83° γ: 90°
R-values:
R R work R free
0.247 0.247 0.288
Expression system: Spodoptera frugiperda