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Crystal structure analysis of bovine BC1 with myxothiazol

Analyse Crystal structure analysis of bovine BC1 with myxothiazol in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
1SQP
Type
protein
Length
2,102 residues
Chains
11
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Ubiquinol-cytochrome-C reductase complex core protein I, mitochondrial precursor…
EC
1.10.2.2
UniProt
P31800, P23004, P00157, P00125, P13272, P13271, P00126, P00130, P07552
Ligands
CDL, PEE, HEC, MYX, FES, PLX
Pockets
20 · best druggability 0.85

Structure

x-ray diffraction · 11 distinct chains · 50% helix, 12% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
AUbiquinol-cytochrome-C reductase complex core protein I, mitochondrial precursor (EC 1.10.2.2)protein44646% helix, 19% strandP31800
BUbiquinol-cytochrome-C reductase complex core protein 2, mitochondrial precursor (EC 1.10.2.2)protein42345% helix, 20% strandP23004
CCytochrome Bprotein37872% helix, 2% strandP00157
DCytochrome C1, heme protein, mitochondrialprotein24136% helix, 7% strandP00125
EUbiquinol-cytochrome C reductase iron-sulfur subunit, mitochondrial precursor (ec 1.10.2.2) (rieske iron-sulfur protein) (risp) [contains: ubiquinol-cytochrome C reductase 8 kda protein (complex III subunit IX)]protein19629% helix, 16% strandP13272
FSUB6protein10564% helix, 1% strand—
GUbiquinol-cytochrome C reductase complex ubiquinone-binding protein qp-C (EC 1.10.2.2)protein7551% helix, 12% strandP13271
HUbiquinol-cytochrome C reductase complex 11 kda protein (EC 1.10.2.2)protein6767% helix, 0% strandP00126
IUbiquinol-cytochrome C reductase iron-sulfur subunit, mitochondrial precursor (ec 1.10.2.2) (rieske iron-sulfur protein) (risp) [contains: ubiquinol-cytochrome C reductase 8 kda protein (complex III subunit IX)]protein570% helix, 11% strandP13272
JUbiquinol-cytochrome C reductase complex 7.2 kda protein (EC 1.10.2.2)protein6175% helix, 0% strandP00130
KUbiquinol-cytochrome C reductase complex 6.4 kda protein (EC 1.10.2.2)protein5368% helix, 0% strandP07552

Ligands and binding sites

  • CDL · Cardiolipin · ligand · 3 copies · chains A, C, K, D, F, G
  • PEE · 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine · ligand · 3 copies · chains A, C, E, F, G, D, J
  • HEC · Heme C · ligand · 3 copies · chains C, D
  • MYX · (2Z,6E)-7-{2'-[(2E,4E)-1,6-dimethylhepta-2,4-dienyl]-2, 4'-bi-1,3-thiazol-4-yl}-3,5-dimethoxy-4-methylhepta-2, 6-dienamide · ligand · chains C
  • FES · Fe2/s2 (inorganic) cluster · ligand · chains E
  • PLX · (9R,11S)-9-({[(1S)-1-hydroxyhexadecyl]oxy}methyl)-2,2-dimethyl-5,7,10-trioxa-2lambda~5~-aza-6lambda~5~-phosphaoctacosane-6,6,11-triol · ligand · chains A, C, D, E, J, K

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
13910.850.9344HEC
210440.810.82102PLX
34920.800.8752HEC
46010.790.8453empty
57130.780.8255PEE

Interfaces

25 interfaces between chains.

  • A–B · 2309 Ų buried · 41 hydrogen bonds · protein-protein
  • B–I · 2154 Ų buried · 17 hydrogen bonds · protein-protein
  • C–D · 1758 Ų buried · 14 hydrogen bonds · protein-protein
  • A–I · 1469 Ų buried · 17 hydrogen bonds · protein-protein
  • C–F · 1270 Ų buried · 8 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 3 disulfide, 2 cofactor (disulfide, heme c attachment).

Compared structures

  • 1SQP · Crystal Structure Analysis of Bovine Bc1 with Myxothiazol · the same entry in another collection · chain K against K, TM-score 1.00
  • P00157 · AlphaFold monomer V2.0 prediction for cytochrome B (P00157) · a predicted model of the same protein · chain C against A, TM-score 1.00

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