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Rhodobacter sphaeroides bc1 with azoxystrobin

Analyse Rhodobacter sphaeroides bc1 with azoxystrobin in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
6NHH
Type
protein
Length
1,722 residues
Chains
6
Method
x-ray diffraction
Collection
MolNFT v2 / PDB Bank
Contract
0xd58B01f6C18086e5202cdC5D7Ad3E41790360102
Owner
0xF4e1AA6f26B7DA48EeAD9B24a97927303eeA07b8
Resolution
3
Source
Rhodobacter sphaeroides (strain ATCC 17023 / 2.4.1 / NCIB 8253 / DSM 158)
Molecule
Cytochrome b; Cytochrome c1; Ubiquinol-cytochrome c reductase iron-sulfur subunit
EC
1.10.2.2
UniProt
A0A344Q9J3, A0A344Q9J2, A0A344Q9J4
Ligands
HEM, AZO, 6PE, 8SP, HEC, FES, SR
Pockets
20 · best druggability 0.87

Structure

x-ray diffraction · resolution 3 · 3 distinct chains · 51% helix, 9% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
A, ECytochrome bprotein43068% helix, 2% strandA0A344Q9J3
B, FCytochrome c1protein25640% helix, 7% strandA0A344Q9J2
C, GUbiquinol-cytochrome c reductase iron-sulfur subunit (EC 1.10.2.2)protein17523% helix, 29% strandA0A344Q9J4

Ligands and binding sites

  • HEM · Protoporphyrin IX containing Fe · ligand · 4 copies · chains A, E
  • AZO · Methyl (2Z)-2-(2-{[6-(2-cyanophenoxy)pyrimidin-4-yl]oxy}phenyl)-3-methoxyacrylate · ligand · 2 copies · chains A, E
  • 6PE · 1,2-dihexanoyl-sn-glycero-3-phosphoethanolamine · ligand · 2 copies · chains A, E
  • 8SP · O-[(R)-{[(2R)-2,3-bis(octanoyloxy)propyl]oxy}(hydroxy) phosphoryl]-L-serine · ligand · 2 copies · chains A, B, E, F
  • HEC · Heme C · ligand · 2 copies · chains B, F
  • FES · Fe2/s2 (inorganic) cluster · ligand · 2 copies · chains C, G
  • SR · Strontium ion · metal · 3 copies · chains B, F
  • BOG · octyl beta-D-glucopyranoside · additive · 2 copies · chains A, B, E, F

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

Pockets

20 pockets found on a 1 Å grid, 12 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
16520.870.9167HEM, BOG
26360.860.9168HEM, BOG
311790.820.8396HEC, 8SP
48240.820.85948SP, HEC
53950.800.8844HEM

Interfaces

11 interfaces between chains.

  • E–F · 1991 Ų buried · 16 hydrogen bonds · protein-protein
  • A–B · 1963 Ų buried · 15 hydrogen bonds · protein-protein
  • A–E · 1573 Ų buried · 21 hydrogen bonds · protein-protein
  • F–G · 732 Ų buried · 1 hydrogen bond · protein-protein
  • B–C · 656 Ų buried · 2 hydrogen bonds · protein-protein

Modifications

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

Compared structures

  • 6NHH · Rhodobacter sphaeroides BC1 with azoxystrobin · the same entry in another collection · chain A against A, TM-score 1.00

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