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Respiratory complex CIII2CIV2SOD2 from mycobacterium smegmatis

Analyse Respiratory complex CIII2CIV2SOD2 from mycobacterium smegmatis in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
6ADQ
Type
protein
Length
6,026 residues
Chains
24
Method
electron microscopy
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Cytochrome C oxidase subunit 2; Cytochrome C oxidase subunit 1; Cytochrome C oxidase…
EC
1.9.3.1, 1.15.1.1, 1.10.2.2
UniProt
A0R057, A0R049, A0R056, A0R1B6, A0R1B5, A0QQQ1, A0R562, A0R052, I7FPH1, I7GD61
Ligands
CDL, MQ9, 9Y0, 9YF, HEA, PLM, 9XX, HEM, HEC, FES, CU
Pockets
20 · best druggability 0.90

Structure

electron microscopy · 12 distinct chains · 43% helix, 9% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
E, QCytochrome C oxidase subunit 2 (EC 1.9.3.1)protein31225% helix, 17% strandA0R057
F, RCytochrome C oxidase subunit 1 (EC 1.9.3.1)protein55263% helix, 1% strand—
G, SCytochrome C oxidase subunit 3 (EC 1.9.3.1)protein20369% helix, 0% strandA0R049
H, TCytochrome C oxidase polypeptide 4 (EC 1.9.3.1)protein13962% helix, 1% strandA0R056
I, UCytochrome C oxidase subunit ctajprotein6734% helix, 6% strandA0R1B6
J, VUncharacterized protein MSMEG_4692/MSMEI_4575protein14531% helix, 11% strandA0R1B5
D, PProkaryotic respiratory supercomplex associate factor 1 PRSAF1protein9247% helix, 0% strand—
Y, ZSuperoxide dismutase [cu-zn] (EC 1.15.1.1)protein2164% helix, 23% strandA0QQQ1
K, WLpqe proteinprotein1470% helix, 27% strandA0R562
B, NUbiquinol-cytochrome C reductase cytochrome B subunitprotein53559% helix, 5% strandA0R052
C, OCytochrome BC1 complex cytochrome C subunit (EC 1.10.2.2)protein22342% helix, 4% strandI7FPH1
A, MRieske iron-sulfur protein qcraprotein38231% helix, 17% strandI7GD61

Ligands and binding sites

  • CDL · Cardiolipin · ligand · 18 copies · chains F, G, H, D, B, C, A, N, M, R, S, T, P, O
  • MQ9 · Menaquinone-9 · ligand · 10 copies · chains B, A, M, F, H, C, N, R, T, O
  • 9Y0 · (2R)-3-(((2-aminoethoxy)(hydroxy)phosphoryl)oxy)-2-(palmitoyloxy)propyl (E)-octadec-9-enoate · ligand · 8 copies · chains F, G, H, D, B, E, K, N, R, S, T, P, Q, W
  • 9YF · (2R)-2-(hexadecanoyloxy)-3-{[(S)-hydroxy{[(1r,2r,3r,4r, 5R,6S)-2,3,4,5,6-pentahydroxycyclohexyl]oxy}phosphoryl]oxy}propyl (9S)-9-methyloctadecanoate · ligand · 8 copies · chains F, D, K, B, C, H, A, N, M, R, P, W, O, T
  • HEA · Heme-A · ligand · 4 copies · chains E, F, Q, R
  • PLM · Palmitic acid · ligand · 4 copies · chains D, Y, B, F, K, P, Z, N, R, W
  • 9XX · (2S)-1-(hexadecanoyloxy)propan-2-yl (10S)-10-methyloctadecanoate · ligand · 4 copies · chains Y, B, F, D, K, Z, N, R, P, W
  • HEM · Protoporphyrin IX containing Fe · ligand · 4 copies · chains B, N
  • HEC · Heme C · ligand · 4 copies · chains E, K, C, A, Q, W, O, M
  • FES · Fe2/s2 (inorganic) cluster · ligand · 2 copies · chains A, M
  • CU · Copper (II) ion · metal · 8 copies · chains E, F, Q, 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
18690.900.9292HEA, CU
29520.890.90104HEA, CU
310990.870.89182empty
411490.870.8774CDL
511380.860.8773CDL

Interfaces

83 interfaces between chains.

  • N–M · 4687 Ų buried · 48 hydrogen bonds · protein-protein
  • B–A · 4680 Ų buried · 46 hydrogen bonds · protein-protein
  • E–F · 4613 Ų buried · 46 hydrogen bonds · protein-protein
  • Q–R · 4599 Ų buried · 46 hydrogen bonds · protein-protein
  • A–M · 2907 Ų buried · 13 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 10 covalent, 4 lipid, 2 cofactor, 2 disulfide (covalent ligand, palmitoylation, heme attachment, disulfide).

Compared structures

  • 6ADQ · Respiratory Complex CIII2CIV2SOD2 from Mycobacterium smegmatis · the same entry in another collection · chain E against E, TM-score 1.00

Analyse

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