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Structure of homoprotocatechuate 2,3-dioxygenase from B.FUSCUM in complex with hpca at 1.50 ang resolution

Analyse Structure of homoprotocatechuate 2,3-dioxygenase from B.FUSCUM in complex with… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
4GHG
Type
protein
Length
1,432 residues
Chains
4
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Homoprotocatechuate 2,3-dioxygenase
EC
1.13.11.15
UniProt
Q45135
Ligands
DHY, FE2, CA, CL
Pockets
20 · best druggability 0.83

Structure

x-ray diffraction · 3 distinct chains · 17% helix, 35% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
AHomoprotocatechuate 2,3-dioxygenase (EC 1.13.11.15)protein35617% helix, 34% strandQ45135
B, DHomoprotocatechuate 2,3-dioxygenase (EC 1.13.11.15)protein36017% helix, 35% strandQ45135
CHomoprotocatechuate 2,3-dioxygenase (EC 1.13.11.15)protein35617% helix, 35% strandQ45135

Ligands and binding sites

  • DHY · 2-(3,4-dihydroxyphenyl)acetic acid · ligand · chains C
  • FE2 · Fe (II) ion · metal · 4 copies · chains A, B, C, D
  • CA · Calcium ion · metal · chains B
  • CL · Chloride ion · ion · 3 copies · chains A, B, D
  • P6G · Hexaethylene glycol · additive · 5 copies · chains A, B, C, D
  • PG4 · Tetraethylene glycol · additive · 2 copies · chains A, B, C, D

Binding sites are the residues within 4.5 Å of a ligand's heavy atoms.

Pockets

20 pockets found on a 1 Å grid, 6 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
16090.830.8872empty
26410.820.8772empty
31120.790.9825empty
4620.720.9827empty
5620.700.9728empty

Interfaces

6 interfaces between chains.

  • B–D · 1684 Ų buried · 43 hydrogen bonds · protein-protein
  • C–D · 1648 Ų buried · 37 hydrogen bonds · protein-protein
  • A–B · 1631 Ų buried · 36 hydrogen bonds · protein-protein
  • A–C · 1331 Ų buried · 40 hydrogen bonds · protein-protein
  • B–C · 529 Ų buried · 2 hydrogen bonds · protein-protein

Compared structures

  • 4GHG · Structure of Homoprotocatechuate 2,3-Dioxygenase from B.fuscum in complex with HPCA at… · the same entry in another collection · chain C against C, TM-score 1.00

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