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Crystal structure of MENAQUINOL:FUMARATE oxidoreductase in complex with fumarate

Analyse Crystal structure of MENAQUINOL:FUMARATE oxidoreductase in complex with fumarate in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
3P4P
Type
protein
Length
2,138 residues
Chains
8
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Fumarate reductase flavoprotein subunit; Fumarate reductase iron-sulfur protein; Fumarate…
EC
1.3.99.1
UniProt
D3GV56, Q0T9N6, C9QU46, C9QU47
Ligands
FAD, FES, F3S, SF4, FUM
Pockets
20 · best druggability 0.84

Structure

x-ray diffraction · 4 distinct chains · 47% helix, 15% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
A, MFumarate reductase flavoprotein subunit (EC 1.3.99.1)protein57740% helix, 20% strandD3GV56
B, NFumarate reductase iron-sulfur protein (EC 1.3.99.1)protein24340% helix, 14% strandQ0T9N6
C, OFumarate reductase subunit Cprotein13074% helix, 4% strandC9QU46
D, PFumarate reductase subunit Dprotein11971% helix, 0% strandC9QU47

Ligands and binding sites

  • FAD · Flavin-adenine dinucleotide · ligand · 2 copies · chains A, M
  • FES · Fe2/s2 (inorganic) cluster · ligand · 2 copies · chains B, N
  • F3S · FE3-S4 cluster · ligand · 2 copies · chains B, N
  • SF4 · Iron/sulfur cluster · ligand · 2 copies · chains B, N
  • FUM · Fumaric acid · ligand · chains A

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

Pockets

20 pockets found on a 1 Å grid, 17 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
12880.840.9550FAD
25500.820.8883FAD, FUM
310640.820.83111empty
41360.800.9734empty
57300.790.8360empty

Interfaces

13 interfaces between chains.

  • M–N · 2720 Ų buried · 53 hydrogen bonds · protein-protein
  • A–B · 2681 Ų buried · 40 hydrogen bonds · protein-protein
  • C–D · 2359 Ų buried · 15 hydrogen bonds · protein-protein
  • O–P · 2292 Ų buried · 15 hydrogen bonds · protein-protein
  • N–O · 1465 Ų buried · 20 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 1 cofactor (flavinylation).

Compared structures

  • 3P4P · Crystal structure of Menaquinol:fumarate oxidoreductase in complex with fumarate · the same entry in another collection · chain A against A, TM-score 1.00

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