2z86

X-ray diffraction
2.4Å resolution

Crystal structure of chondroitin polymerase from Escherichia coli strain K4 (K4CP) complexed with UDP-GlcUA and UDP

Released:
Source organism: Escherichia coli

Function and Biology Details

Reactions catalysed:
UDP-N-acetyl-alpha-D-galactosamine + [protein]-3-O-(beta-D-GlcA-(1->3)-(beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3))(n)-beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3)-beta-D-Gal-(1->3)-beta-D-Gal-(1->4)-beta-D-Xyl)-L-serine = UDP + [protein]-3-O-((beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3))(n+1)-beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3)-beta-D-Gal-(1->3)-beta-D-Gal-(1->4)-beta-D-Xyl)-L-serine
UDP-alpha-D-glucuronate + [protein]-3-O-((beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3))(n)-beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3)-beta-D-Gal-(1->3)-beta-D-Gal-(1->4)-beta-D-Xyl)-L-serine = UDP + [protein]-3-O-(beta-D-GlcA-(1->3)-(beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3))(n)-beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3)-beta-D-Gal-(1->3)-beta-D-Gal-(1->4)-beta-D-Xyl)-L-serine

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-185230 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Chondroitin synthase Chains: A, B, C, D
Molecule details ›
Chains: A, B, C, D
Length: 625 amino acids
Theoretical weight: 72.25 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli
UniProt:
  • Canonical: Q8L0V4 (Residues: 58-682; Coverage: 91%)
Gene name: kfoC
Sequence domains:
Structure domains: Spore Coat Polysaccharide Biosynthesis Protein SpsA; Chain A

Ligands and Environments

3 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: PHOTON FACTORY BEAMLINE AR-NW12A
Spacegroup: P21
Unit cell:
a: 84.092Å b: 219.829Å c: 85.856Å
α: 90° β: 103.07° γ: 90°
R-values:
R R work R free
0.225 0.225 0.286
Expression system: Escherichia coli