4x57

X-ray diffraction
2.8Å resolution

Structure of an Arabidopsis E2 / Membrane-anchored Ubiquitin-fold Protein Complex

Released:
Source organism: Arabidopsis thaliana
Entry authors: Korolev S, Koroleva O, Lu X, Downes B

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
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
PDBe Complex ID:
PDB-CPX-152803 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Ubiquitin-conjugating enzyme E2 8 Chains: A, C
Molecule details ›
Chains: A, C
Length: 179 amino acids
Theoretical weight: 19.82 KDa
Source organism: Arabidopsis thaliana
Expression system: Escherichia coli
UniProt:
  • Canonical: P35131 (Residues: 1-148; Coverage: 100%)
Gene names: At5g41700, MBK23.24, UBC4A, UBC8
Sequence domains: Ubiquitin-conjugating enzyme
Structure domains: Ubiquitin Conjugating Enzyme
Membrane-anchored ubiquitin-fold protein 3 Chains: B, D
Molecule details ›
Chains: B, D
Length: 138 amino acids
Theoretical weight: 15.03 KDa
Source organism: Arabidopsis thaliana
Expression system: Escherichia coli
UniProt:
  • Canonical: Q9SW27 (Residues: 1-118; Coverage: 100%)
Gene names: At4g24990, F13M23.130, MUB3
Sequence domains: Ubiquitin-2 like Rad60 SUMO-like
Structure domains: Phosphatidylinositol 3-kinase Catalytic Subunit; Chain A, domain 1

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 23-ID-D
Spacegroup: P6322
Unit cell:
a: 135.716Å b: 135.716Å c: 202.134Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.223 0.221 0.257
Expression system: Escherichia coli