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Cytochrome BC1 complex from chicken with azoxystrobin bound

Analyse Cytochrome BC1 complex from chicken with azoxystrobin bound in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
3L71
Type
protein
Length
4,068 residues
Chains
20
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Mitochondrial ubiquinol-cytochrome-C reductase complex core protein I; Mitochondrial…
EC
1.10.2.2
UniProt
D0VX31, D0VX29, P18946, D0VX26, Q5ZLR5, D0VX30, D0VX32, D0VX28, D0VX27
Ligands
PEE, HEM, CDL, AZO, UQ, HEC, FES
Pockets
20 · best druggability 0.88

Structure

x-ray diffraction · 17 distinct chains · 52% helix, 12% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
AMitochondrial ubiquinol-cytochrome-C reductase complex core protein I (EC 1.10.2.2)protein44447% helix, 19% strandD0VX31
BMitochondrial ubiquinol-cytochrome-C reductase complex core protein 2 (EC 1.10.2.2)protein42044% helix, 19% strandD0VX29
CCytochrome B (EC 1.10.2.2)protein38071% helix, 2% strandP18946
D, QMitochondrial cytochrome C1, heme protein (EC 1.10.2.2)protein24141% helix, 9% strandD0VX26
E, RCytochrome B-C1 complex subunit rieske, mitochondrial (EC 1.10.2.2)protein19622% helix, 19% strandQ5ZLR5
F, SMitochondrial ubiquinol-cytochrome C reductase 14 kda protein (EC 1.10.2.2)protein10174% helix, 0% strandD0VX30
GMitochondrial ubiquinol-cytochrome C reductase ubiquinone- binding protein qp-C (EC 1.10.2.2)protein8054% helix, 11% strandD0VX32
HMitochondrial ubiquinol-cytochrome C reductase 11 kda protein, complex III subunit VIII (EC 1.10.2.2)protein7071% helix, 0% strandD0VX28
ICytochrome B-C1 complex subunit rieske, mitochondrial (EC 1.10.2.2)protein469% helix, 11% strandQ5ZLR5
JMitochondrial ubiquinol-cytochrome C reductase 7.2 kda protein (EC 1.10.2.2)protein6175% helix, 0% strandD0VX27
NMitochondrial ubiquinol-cytochrome-C reductase complex core protein I (EC 1.10.2.2)protein44248% helix, 19% strandD0VX31
OMitochondrial ubiquinol-cytochrome-C reductase complex core protein 2 (EC 1.10.2.2)protein42245% helix, 19% strandD0VX29
PCytochrome B (EC 1.10.2.2)protein37971% helix, 2% strandP18946
TMitochondrial ubiquinol-cytochrome C reductase ubiquinone- binding protein qp-C (EC 1.10.2.2)protein7954% helix, 11% strandD0VX32
UMitochondrial ubiquinol-cytochrome C reductase 11 kda protein, complex III subunit VIII (EC 1.10.2.2)protein6775% helix, 0% strandD0VX28
VCytochrome B-C1 complex subunit rieske, mitochondrial (EC 1.10.2.2)protein439% helix, 14% strandQ5ZLR5
WMitochondrial ubiquinol-cytochrome C reductase 7.2 kda protein (EC 1.10.2.2)protein5978% helix, 0% strandD0VX27

Ligands and binding sites

  • PEE · 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine · ligand · 6 copies · chains A, C, D, E, J, F, G, N, P, Q, R, W, S, T
  • HEM · Protoporphyrin IX containing Fe · ligand · 4 copies · chains C, P
  • CDL · Cardiolipin · ligand · 4 copies · chains C, D, F, G, P, Q, S, T
  • AZO · Methyl (2Z)-2-(2-{[6-(2-cyanophenoxy)pyrimidin-4-yl]oxy}phenyl)-3-methoxyacrylate · ligand · 2 copies · chains C, P
  • UQ · Coenzyme Q10, (2Z,6E,10Z,14E,18E,22E,26Z)-isomer · ligand · 2 copies · chains C, P
  • HEC · Heme C · ligand · 2 copies · chains D, Q
  • FES · Fe2/s2 (inorganic) cluster · ligand · 2 copies · chains E, R
  • BOG · octyl beta-D-glucopyranoside · additive · 5 copies · chains C, D, E, J, P, Q, R, W
  • GOL · Glycerol · additive · 2 copies · chains C, D, P, Q

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

Pockets

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

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
15600.880.9357HEM, GOL
25480.870.9360HEM, GOL
31330.810.9826empty
41350.810.9826empty
54180.800.8848HEM, UQ

Interfaces

55 interfaces between chains.

  • A–B · 2045 Ų buried · 34 hydrogen bonds · protein-protein
  • N–O · 2042 Ų buried · 37 hydrogen bonds · protein-protein
  • O–V · 1767 Ų buried · 21 hydrogen bonds · protein-protein
  • B–I · 1760 Ų buried · 18 hydrogen bonds · protein-protein
  • C–D · 1616 Ų buried · 12 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 6 disulfide, 4 cofactor (disulfide, heme c attachment).

Compared structures

  • 3L71 · Cytochrome BC1 complex from chicken with azoxystrobin bound · the same entry in another collection · chain N against N, TM-score 1.00

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