7scj

Electron Microscopy
3.4Å resolution

Cryo-EM structure of the human Exostosin-1 and Exostosin-2 heterodimer in complex with a 4-sugar oligosaccharide acceptor analog

Released:
Source organism: Homo sapiens
Related structures: EMD-25036

Function and Biology Details

Reactions catalysed:
UDP-alpha-D-glucuronate + N-acetyl-alpha-D-glucosaminyl-(1->4)-beta-D-glucuronosyl-proteoglycan = UDP + beta-D-glucuronosyl-(1->4)-N-acetyl-alpha-D-glucosaminyl-(1->4)-beta-D-glucuronosyl-proteoglycan
UDP-N-acetyl-D-glucosamine + beta-D-glucuronosyl-(1->4)-N-acetyl-alpha-D-glucosaminyl-proteoglycan = UDP + N-acetyl-alpha-D-glucosaminyl-(1->4)-beta-D-glucuronosyl-(1->4)-N-acetyl-alpha-D-glucosaminyl-proteoglycan

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
PDBe Complex ID:
PDB-CPX-172463 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (4 distinct):
Exostosin-1 Chain: A
Molecule details ›
Chain: A
Length: 720 amino acids
Theoretical weight: 83.4 KDa
Source organism: Homo sapiens
Expression system: Mammalia
UniProt:
  • Canonical: Q16394 (Residues: 28-746; Coverage: 96%)
Gene name: EXT1
Sequence domains:
Exostosin-2 Chain: B
Molecule details ›
Chain: B
Length: 673 amino acids
Theoretical weight: 77.18 KDa
Source organism: Homo sapiens
Expression system: Mammalia
UniProt:
  • Canonical: Q93063 (Residues: 46-718; Coverage: 94%)
Gene name: EXT2
Sequence domains:

Ligands and Environments

Carbohydrate polymer : NEW Components: NAG, BMA
Carbohydrate polymer : NEW Components: NDG, BDP
2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
Resolution: 3.4Å
Relevant EMDB volumes: EMD-25036
Expression system: Mammalia