PDBe 4ip3

X-ray diffraction
2.3Å resolution

Complex structure of OspI and Ubc13

Source organisms:
Entry authors: Fu P, Jin M, Zhang X, Xu L, Xia Z, Zhu Y

Function and Biology Details

Reaction catalysed:
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)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
ORF169b Chain: A
Molecule details ›
Chain: A
Length: 214 amino acids
Theoretical weight: 23.48 KDa
Source organism: Shigella flexneri
Expression system: Escherichia coli BL21(DE3)
  • Canonical: Q8VSD5 (Residues: 1-212; Coverage: 100%)
Gene names: ORF169b, SF_p0209
Ubiquitin-conjugating enzyme E2 N Chain: B
Molecule details ›
Chain: B
Length: 172 amino acids
Theoretical weight: 19.33 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
  • 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: SSRF BEAMLINE BL17U
Spacegroup: P321
Unit cell:
a: 119.06Å b: 119.06Å c: 69.735Å
α: 90° β: 90° γ: 120°
R R work R free
0.214 0.21 0.248
Expression system: Escherichia coli BL21(DE3)