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Structure of reduced bovine cytochrome C oxidase at 1.93 ångström resolution obtained by synchrotron X-rays

Analyse Structure of reduced bovine cytochrome C oxidase at 1.93 ångström resolution… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
7THU
Type
protein
Length
3,568 residues
Chains
26
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Cytochrome C oxidase subunit 1; Cytochrome C oxidase subunit 2; Cytochrome C oxidase…
EC
1.9.3.1
UniProt
P00396, P68530, P00415, P00423, P00426, P00428, P07471, P00429, P04038, P07470, P13183, P00430, P10175
Ligands
CHD, PGV, TGL, PEK, HEA, CDL, CUA, PSC, SAC, CU, MG, NA, ZN
Pockets
20 · best druggability 0.91

Structure

x-ray diffraction · 13 distinct chains · 59% helix, 6% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
A, NCytochrome C oxidase subunit 1 (EC 1.9.3.1)protein51472% helix, 2% strandP00396
B, OCytochrome C oxidase subunit 2protein22735% helix, 26% strandP68530
C, PCytochrome C oxidase subunit 3protein25976% helix, 0% strandP00415
D, QCytochrome C oxidase subunit 4 isoform 1, mitochondrialprotein14752% helix, 3% strandP00423
E, RCytochrome C oxidase subunit 5A, mitochondrialprotein10564% helix, 1% strandP00426
F, SCytochrome C oxidase subunit 5B, mitochondrialprotein9815% helix, 28% strandP00428
G, TCytochrome C oxidase subunit 6A2, mitochondrialprotein8431% helix, 2% strandP07471
H, UCytochrome C oxidase subunit 6B1protein7956% helix, 1% strandP00429
I, VCytochrome C oxidase subunit 6Cprotein7271% helix, 1% strandP04038
J, WCytochrome C oxidase subunit 7A1, mitochondrialprotein5867% helix, 0% strandP07470
K, XCytochrome C oxidase subunit 7B, mitochondrialprotein5252% helix, 0% strandP13183
L, YCytochrome C oxidase subunit 7C, mitochondrialprotein4663% helix, 0% strandP00430
M, ZCytochrome C oxidase subunit 8B, mitochondrialprotein4367% helix, 5% strandP10175

Ligands and binding sites

  • CHD · Cholic acid · ligand · 10 copies · chains A, B, T, C, P, J, G, N, O, W, Y
  • PGV · (1R)-2-{[{[(2S)-2,3-dihydroxypropyl]oxy}(hydroxy) phosphoryl]oxy}-1-[(palmitoyloxy)methyl]ethyl (11E)-octadec-11-enoate · ligand · 8 copies · chains A, D, K, M, C, F, N, P, G, S, B, T, Q, X, Z
  • TGL · Tristearoylglycerol · ligand · 6 copies · chains A, B, I, D, L, N, O, V, Q, Y
  • PEK · (1S)-2-{[(2-aminoethoxy)(hydroxy)phosphoryl]oxy}-1-[(stearoyloxy)methyl]ethyl (5E,8E,11E,14E)-icosa-5,8, 11,14-tetraenoate · ligand · 6 copies · chains A, C, G, F, N, O, S, P, T, B
  • HEA · Heme-A · ligand · 4 copies · chains A, B, N, O
  • CDL · Cardiolipin · ligand · 4 copies · chains C, J, G, N, O, P, W, A, B, T
  • CUA · Dinuclear copper ion · ligand · 2 copies · chains B, O
  • PSC · (7R,17E,20E)-4-hydroxy-N,N,N-trimethyl-9-oxo-7-[(palmitoyloxy)methyl]-3,5,8-trioxa-4-phosphahexacosa-17,20-dien-1-aminium 4-oxide · ligand · 2 copies · chains A, B, E, I, N, O, R, V
  • SAC · N-acetyl-serine · ligand · 2 copies · chains I, V
  • CU · Copper (II) ion · metal · 2 copies · chains A, N
  • MG · Magnesium ion · metal · 2 copies · chains A, B, N, O
  • NA · Sodium ion · metal · 2 copies · chains A, N
  • ZN · Zinc ion · metal · 2 copies · chains F, S
  • EDO · 1,2-ethanediol · additive · 91 copies · chains A, D, M, B, F, C, H, G, J, E, K, N, P, I, L, Z, Q, S, O, Y, W, T, R, X, U, V
  • DMU · Decyl-beta-D-maltopyranoside · additive · 6 copies · chains C, G, J, A, D, L, M, P, W, N, Q, Y, Z

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
111020.910.93121HEA
211560.910.93125HEA
37890.860.8885PGV
410290.850.8688PGV
59750.840.8596EDO

Interfaces

79 interfaces between chains.

  • A–B · 3561 Ų buried · 33 hydrogen bonds · protein-protein
  • N–O · 3560 Ų buried · 34 hydrogen bonds · protein-protein
  • N–P · 2644 Ų buried · 17 hydrogen bonds · protein-protein
  • A–C · 2611 Ų buried · 17 hydrogen bonds · protein-protein
  • A–L · 1787 Ų buried · 18 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 6 modified, 4 disulfide (disulfide, formylation, phosphorylation).

Compared structures

  • 7THU · Structure of reduced bovine cytochrome c oxidase at 1.93 Angstrom resolution obtained by… · the same entry in another collection · chain J against J, TM-score 1.00

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