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Crystal structure of rhodobacter sphaeroides double mutant with stigmatellin and UQ2

Analyse Crystal structure of rhodobacter sphaeroides double mutant with stigmatellin… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
2QJY
Type
protein
Length
5,178 residues
Chains
18
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Cytochrome B; Cytochrome C1; Ubiquinol-cytochrome C reductase iron-sulfur subunit
EC
1.10.2.2
UniProt
Q02761, Q3IY11, Q02762
Ligands
HEM, SMA, LOP, UQ2, BGL, FES, SR, NA, CL
Pockets
20 · best druggability 0.89

Structure

x-ray diffraction · 3 distinct chains · 50% helix, 9% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
A, D, G, J, M, PCytochrome Bprotein42868% helix, 2% strandQ02761
B, E, H, K, N, QCytochrome C1protein25639% helix, 7% strandQ3IY11
C, F, I, L, O, RUbiquinol-cytochrome C reductase iron-sulfur subunit (EC 1.10.2.2)protein17923% helix, 28% strandQ02762

Ligands and binding sites

  • HEM · Protoporphyrin IX containing Fe · ligand · 18 copies · chains A, B, D, E, G, H, J, K, M, N, P, Q
  • SMA · Stigmatellin A · ligand · 6 copies · chains A, F, C, D, G, L, I, J, M, R, O, P
  • LOP · (1R)-2-{[(R)-(2-aminoethoxy)(hydroxy)phosphoryl]oxy}-1-[(dodecanoyloxy)methyl]ethyl (9Z)-octadec-9-enoate · ligand · 6 copies · chains A, D, G, J, M, P
  • UQ2 · Ubiquinone-2 · ligand · 6 copies · chains A, D, G, J, M, P
  • BGL · 2-O-octyl-beta-D-glucopyranose · ligand · 6 copies · chains A, B, D, E, G, H, J, K, M, N, P, Q
  • FES · Fe2/s2 (inorganic) cluster · ligand · 6 copies · chains C, F, I, L, O, R
  • SR · Strontium ion · metal · 9 copies · chains B, E, H, K, J, M, N, Q
  • NA · Sodium ion · metal · chains I, R
  • CL · Chloride ion · ion · 2 copies · chains I, R

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
19830.890.91105HEM, BGL
29450.890.91102HEM, BGL
310080.890.90116HEM, BGL
49010.890.91103BGL, HEM
58610.890.91103BGL, HEM

Interfaces

39 interfaces between chains.

  • P–Q · 1982 Ų buried · 20 hydrogen bonds · protein-protein
  • D–E · 1979 Ų buried · 21 hydrogen bonds · protein-protein
  • G–H · 1970 Ų buried · 21 hydrogen bonds · protein-protein
  • A–B · 1967 Ų buried · 19 hydrogen bonds · protein-protein
  • J–K · 1962 Ų buried · 18 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 12 cofactor, 12 disulfide (heme attachment, disulfide).

Compared structures

  • 2QJY · Crystal structure of rhodobacter sphaeroides double mutant with stigmatellin and UQ2 · the same entry in another collection · chain Q against Q, TM-score 1.00

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