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Structure of the photosynthetic complex I from thermosynechococcus elongatus

Analyse Structure of the photosynthetic complex I from thermosynechococcus elongatus in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
6HUM
Type
protein
Length
3,793 residues
Chains
18
Method
electron microscopy
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
NAD(P)H-quinone oxidoreductase subunit 1; NAD(P)H-quinone oxidoreductase subunit 3…
EC
1.6.5.-
UniProt
Q8DL32, Q8DJ02, Q8DKY0, Q8DL29, Q8DMR6, Q8DL30, Q8DJ01, Q8DJD9, Q8DL31, Q8DKZ4, Q8DKZ3, Q8DKX9, Q8DJU2, Q8DLN5, Q8DL61, Q8DMU4
Ligands
SF4, BCR, LMG
Pockets
20 · best druggability 0.87

Structure

electron microscopy · 18 distinct chains · 53% helix, 5% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
ANAD(P)H-quinone oxidoreductase subunit 1 (EC 1.6.5.-)protein35263% helix, 0% strandQ8DL32
CNAD(P)H-quinone oxidoreductase subunit 3 (EC 1.6.5.-)protein11454% helix, 2% strandQ8DJ02
DNAD(P)H-quinone oxidoreductase chain 4 1 (EC 1.6.5.-)protein48865% helix, 1% strandQ8DKY0
ENAD(P)H-quinone oxidoreductase subunit 4L (EC 1.6.5.-)protein10076% helix, 0% strandQ8DL29
BNAD(P)H-quinone oxidoreductase subunit 2 (EC 1.6.5.-)protein47573% helix, 1% strandQ8DMR6
GNADH dehydrogenase subunit 6protein16871% helix, 0% strandQ8DL30
JNAD(P)H-quinone oxidoreductase subunit J (EC 1.6.5.-)protein15621% helix, 12% strandQ8DJ01
PProton-translocating NADH-quinone dehydrogenase subunit P ndhpprotein4250% helix, 0% strand—
HNAD(P)H-quinone oxidoreductase subunit H (EC 1.6.5.-)protein39341% helix, 7% strandQ8DJD9
INAD(P)H-quinone oxidoreductase subunit I (EC 1.6.5.-)protein19327% helix, 9% strandQ8DL31
KNAD(P)H-quinone oxidoreductase subunit K (EC 1.6.5.-)protein20630% helix, 11% strandQ8DKZ4
LNAD(P)H-quinone oxidoreductase subunit L (EC 1.6.5.-)protein7661% helix, 0% strandQ8DKZ3
FNADH dehydrogenase subunit 5protein61167% helix, 2% strandQ8DKX9
NNAD(P)H-quinone oxidoreductase subunit N (EC 1.6.5.-)protein14720% helix, 10% strandQ8DJU2
MNAD(P)H-quinone oxidoreductase subunit M (EC 1.6.5.-)protein11032% helix, 12% strandQ8DLN5
STLR0636 proteinprotein555% helix, 47% strandQ8DL61
ONAD(P)H-quinone oxidoreductase subunit O (EC 1.6.5.-)protein684% helix, 24% strandQ8DMU4
QProton-translocating NADH-quinone dehydrogenase subunit Q ndhqprotein3959% helix, 0% strand—

Ligands and binding sites

  • SF4 · Iron/sulfur cluster · ligand · 3 copies · chains I, H, K
  • BCR · Beta-carotene · ligand · chains D, P, F
  • LMG · 1,2-distearoyl-monogalactosyl-diglyceride · ligand · chains D, F

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
110210.870.88137empty
24440.860.9346empty
32170.820.9545empty
411630.810.8283LMG
53010.800.9027BCR

Interfaces

51 interfaces between chains.

  • E–G · 3565 Ų buried · 16 hydrogen bonds · protein-protein
  • A–C · 2908 Ų buried · 12 hydrogen bonds · protein-protein
  • D–F · 2509 Ų buried · 17 hydrogen bonds · protein-protein
  • K–M · 2459 Ų buried · 31 hydrogen bonds · protein-protein
  • C–G · 2231 Ų buried · 3 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 1 covalent (covalent ligand).

Compared structures

  • 6HUM · Structure of the photosynthetic complex I from Thermosynechococcus elongatus · the same entry in another collection · chain K against K, TM-score 1.00

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