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Structure of oxidized bovine cytochrome C oxidase with reduced metal centers induced by synchrotron X-ray exposure

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

PDB
7TIH
Type
protein
Length
3,556 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, OH
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)protein51471% helix, 1% strandP00396
B, OCytochrome C oxidase subunit 2protein22736% helix, 26% strandP68530
C, PCytochrome C oxidase subunit 3protein25976% helix, 0% strandP00415
D, QCytochrome C oxidase subunit 4 isoform 1, mitochondrialprotein14452% 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, mitochondrialprotein8432% helix, 2% strandP07471
H, UCytochrome C oxidase subunit 6B1protein7958% helix, 1% strandP00429
I, VCytochrome C oxidase subunit 6Cprotein7272% helix, 1% strandP04038
J, WCytochrome C oxidase subunit 7A1, mitochondrialprotein5869% helix, 0% strandP07470
K, XCytochrome C oxidase subunit 7B, mitochondrialprotein4955% helix, 0% strandP13183
L, YCytochrome C oxidase subunit 7C, mitochondrialprotein4659% helix, 0% strandP00430
M, ZCytochrome C oxidase subunit 8B, mitochondrialprotein4370% helix, 2% strandP10175

Ligands and binding sites

  • CHD · Cholic acid · ligand · 10 copies · chains A, C, P, J, G, N, O, W, B, T, 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, P, T, N, Q, X, Z, S, G, U
  • TGL · Tristearoylglycerol · ligand · 6 copies · chains A, B, D, I, 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, T, G, F, O, S, P, B, N
  • 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
  • OH · Hydroxide ion · ion · 2 copies · chains A, N
  • EDO · 1,2-ethanediol · additive · 84 copies · chains A, D, M, B, F, C, L, H, G, J, E, K, N, P, I, Z, Q, S, W, O, U, V, X, T, R, Y
  • 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
111390.910.93127HEA, OH
211680.910.92134HEA, OH
310260.860.8686PGV
47900.860.8881PGV
58870.830.8581EDO

Interfaces

79 interfaces between chains.

  • A–B · 3645 Ų buried · 38 hydrogen bonds · protein-protein
  • N–O · 3600 Ų buried · 41 hydrogen bonds · protein-protein
  • N–P · 2660 Ų buried · 17 hydrogen bonds · protein-protein
  • A–C · 2643 Ų buried · 17 hydrogen bonds · protein-protein
  • N–Y · 1781 Ų buried · 19 hydrogen bonds · protein-protein

Modifications

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

Compared structures

  • 7TIH · Structure of oxidized bovine cytochrome c oxidase with reduced metal centers induced by… · the same entry in another collection · chain K against K, TM-score 1.00

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