4dhi

X-ray diffraction
1.8Å resolution

Structure of C. elegans OTUB1 bound to human UBC13

Released:
Primary publication:
The mechanism of OTUB1-mediated inhibition of ubiquitination.
Nature 483 618-22 (2012)
PMID: 22367539

Function and Biology Details

Reactions catalysed:
Thiol-dependent hydrolysis of ester, thioester, amide, peptide and isopeptide bonds formed by the C-terminal Gly of ubiquitin (a 76-residue protein attached to proteins as an intracellular targeting signal).
S-ubiquitinyl-[E1 ubiquitin-activating enzyme]-L-cysteine + [E2 ubiquitin-conjugating enzyme]-L-cysteine = [E1 ubiquitin-activating enzyme]-L-cysteine + S-ubiquitinyl-[E2 ubiquitin-conjugating enzyme]-L-cysteine
Biochemical function:
Cellular component:

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
PDBe Complex ID:
PDB-CPX-158215 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Ubiquitin thioesterase otubain-like Chain: B
Molecule details ›
Chain: B
Length: 284 amino acids
Theoretical weight: 32.32 KDa
Source organism: Caenorhabditis elegans
Expression system: Escherichia coli
UniProt:
  • Canonical: Q9XVR6 (Residues: 1-284; Coverage: 100%)
Gene names: C25D7.8, otub-1
Sequence domains: Peptidase C65 Otubain
Structure domains:
Ubiquitin-conjugating enzyme E2 N Chain: D
Molecule details ›
Chain: D
Length: 152 amino acids
Theoretical weight: 17.16 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: P61088 (Residues: 1-152; Coverage: 100%)
Gene names: BLU, UBE2N
Sequence domains: Ubiquitin-conjugating enzyme
Structure domains: Ubiquitin Conjugating Enzyme

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 23-ID-D
Spacegroup: P6122
Unit cell:
a: 111.07Å b: 111.07Å c: 179.612Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.188 0.187 0.209
Expression system: Escherichia coli