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Crystal structure of B. pseudomallei katg with isonicotinic acid hydrazide bound

Analyse Crystal structure of B. pseudomallei katg with isonicotinic acid hydrazide bound in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
5SXQ
Type
protein
Length
1,426 residues
Chains
2
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Catalase-peroxidase
EC
1.11.1.21
UniProt
Q3JNW6
Ligands
HEM, NIZ, NA, OXY, CL, PO4
Pockets
20 · best druggability 0.85

Structure

x-ray diffraction · 1 distinct chain · 46% helix, 8% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
A, BCatalase-peroxidase (EC 1.11.1.21)protein71346% helix, 8% strandQ3JNW6

Ligands and binding sites

  • HEM · Protoporphyrin IX containing Fe · ligand · 2 copies · chains A, B
  • NIZ · pyridine-4-carbohydrazide · ligand · 2 copies · chains A, B
  • NA · Sodium ion · metal · 2 copies · chains A, B
  • OXY · Oxygen molecule · ion · 4 copies · chains A, B
  • CL · Chloride ion · ion · 2 copies · chains A, B
  • PO4 · Phosphate ion · ion · 2 copies · chains A, B
  • MPD · (4S)-2-methyl-2,4-pentanediol · additive · 2 copies · chains A, B

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

Pockets

20 pockets found on a 1 Å grid, 11 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
111260.850.86111empty
25620.820.8870HEM, OXY, MPD
35570.810.8769HEM, OXY, MPD
4910.770.9822empty
5860.760.9817empty

Interfaces

1 interface between chains.

  • A–B · 3682 Ų buried · 48 hydrogen bonds · protein-protein

Compared structures

  • 5SXQ · Crystal structure of B. pseudomallei KatG with isonicotinic acid hydrazide bound · the same entry in another collection · chain A against A, TM-score 1.00
  • Q3JNW6 · AlphaFold monomer V2.0 prediction for catalase-peroxidase (Q3JNW6) · a predicted model of the same protein · chain A against A, TM-score 1.00

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