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Cryo-EM structure of arabidopsis thaliana complex-I (open conformation)

Analyse Cryo-EM structure of arabidopsis thaliana complex-I (open conformation) in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
7AR7
Type
protein
Length
7,594 residues
Chains
46
Method
electron microscopy
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
NADH-ubiquinone oxidoreductase chain 3; NADH dehydrogenase [ubiquinone] iron-sulfur…
EC
7.1.1.2, 4.2.1.-
UniProt
P92533, Q42577, Q95748, P93306, O22769, Q9FNN5, Q9FGI6, P92558, Q42599, A0A2P2CLG1, Q04614, P29388, P93313, O05000, Q9SK66, Q9FJW4, Q9M9M6, Q9FIJ2, P53665, O80800, Q9FLX7, Q9LHI0, Q8LGE7, Q8RWA7, Q9C9Z5, Q9ZPY5, Q8VZT9, Q94AL6, O82238, Q84W12, Q9SLC8, Q9FYF8, Q8LDK3, O64725, Q9FGK0, Q9SIQ8, Q945M1, Q9SKC9, Q94C12, Q9M9M9, Q9ZUX4, Q9SMN1, Q9C6B3, Q9FWR5
Ligands
SF4, PTY, FES, PC7, 8Q1, FMN, UQ9, LMN, NDP, PGT, PSF, T7X, ZN
Pockets
20 · best druggability 0.86

Structure

electron microscopy · 46 distinct chains · 49% helix, 8% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
ANADH-ubiquinone oxidoreductase chain 3 (EC 7.1.1.2)protein9278% helix, 0% strandP92533
BNADH dehydrogenase [ubiquinone] iron-sulfur protein 7, mitochondrial (EC 7.1.1.2)protein15745% helix, 11% strandQ42577
CNADH dehydrogenase [ubiquinone] iron-sulfur protein 3 (EC 7.1.1.2)protein18518% helix, 27% strandQ95748
DNADH dehydrogenase [ubiquinone] iron-sulfur protein 2 (EC 7.1.1.2)protein38548% helix, 10% strandP93306
ENADH dehydrogenase [ubiquinone] flavoprotein 2, mitochondrial (EC 7.1.1.2)protein19240% helix, 10% strandO22769
FNADH dehydrogenase [ubiquinone] flavoprotein 1, mitochondrial (EC 7.1.1.2)protein43444% helix, 12% strandQ9FNN5
GNADH dehydrogenase [ubiquinone] iron-sulfur protein 1, mitochondrial (EC 7.1.1.2)protein68829% helix, 13% strandQ9FGI6
HNADH-ubiquinone oxidoreductase chain 1 (EC 7.1.1.2)protein32461% helix, 0% strandP92558
INADH dehydrogenase [ubiquinone] iron-sulfur protein 8-a, mitochondrial (EC 7.1.1.2)protein16933% helix, 16% strandQ42599
JNADH-ubiquinone oxidoreductase chain 6 (EC 7.1.1.2)protein13868% helix, 0% strandA0A2P2CLG1
KNADH-ubiquinone oxidoreductase chain 4L (EC 7.1.1.2)protein8885% helix, 0% strandQ04614
LNADH-ubiquinone oxidoreductase chain 5 (EC 7.1.1.2)protein61567% helix, 3% strandP29388
MNADH-ubiquinone oxidoreductase chain 4 (EC 7.1.1.2)protein48770% helix, 3% strandP93313
NNADH-ubiquinone oxidoreductase chain 2 (EC 7.1.1.2)protein48872% helix, 1% strandO05000
PNADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 9, mitochondrialprotein33135% helix, 15% strandQ9SK66
QNADH dehydrogenase [ubiquinone] iron-sulfur protein 4, mitochondrialprotein11922% helix, 17% strandQ9FJW4
RNADH dehydrogenase [ubiquinone] iron-sulfur protein 6, mitochondrialprotein6216% helix, 27% strandQ9M9M6
SNADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 2protein9332% helix, 16% strandQ9FIJ2
TAcyl carrier protein 1, mitochondrialprotein8442% helix, 2% strandP53665
UAcyl carrier protein 2, mitochondrialprotein8348% helix, 0% strandO80800
VProbable NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 5, mitochondrialprotein14055% helix, 3% strandQ9FLX7
WNADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 6protein10863% helix, 0% strandQ9LHI0
XNADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 8-Bprotein9670% helix, 0% strandQ8LGE7
ZNADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 13-aprotein12550% helix, 0% strandQ8RWA7
aNADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 1protein5878% helix, 0% strandQ9C9Z5
bAT2G46540/F11C10.23protein4090% helix, 0% strandQ9ZPY5
cTransmembrane proteinprotein7632% helix, 0% strandQ8VZT9
dExcitatory amino acid transporterprotein7575% helix, 0% strandQ94AL6
eNADH dehydrogenase [ubiquinone] iron-sulfur protein 5-aprotein6459% helix, 0% strandO82238
fAT4G16450protein10061% helix, 0% strandQ84W12
gEsss subunit of NADH:UBIQUINONE oxidoreductase (complex I) proteinprotein7251% helix, 0% strandQ9SLC8
iAT1G67350protein8554% helix, 0% strandQ9FYF8
jNADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 2protein5157% helix, 8% strandQ8LDK3
kNADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 3-aprotein4760% helix, 0% strandO64725
lNADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 8, mitochondrialprotein4667% helix, 0% strandQ9FGK0
mAT2G31490 proteinprotein6770% helix, 0% strandQ9SIQ8
nNADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 9protein10950% helix, 1% strandQ945M1
oNADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 7protein8061% helix, 0% strandQ9SKC9
pNADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 10-Bprotein9357% helix, 0% strandQ94C12
qProbable NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 12protein6311% helix, 16% strandQ9M9M9
rB14.5Aprotein100% helix, 40% strand—
uUnknownprotein3080% helix, 0% strand—
vUncharacterized protein AT2G27730, mitochondrialprotein3077% helix, 0% strandQ9ZUX4
xGamma carbonic anhydrase-like 2, mitochondrialprotein21414% helix, 25% strandQ9SMN1
yGamma carbonic anhydrase 2, mitochondrial (EC 4.2.1.-)protein26829% helix, 16% strandQ9C6B3
zGamma carbonic anhydrase 1, mitochondrial (EC 4.2.1.-)protein23326% helix, 18% strandQ9FWR5

Ligands and binding sites

  • SF4 · Iron/sulfur cluster · ligand · 6 copies · chains B, D, F, G, I
  • PTY · Phosphatidylethanolamine · ligand · 3 copies · chains D, H, I, Z, b, M, g, N, d
  • FES · Fe2/s2 (inorganic) cluster · ligand · 2 copies · chains E, G
  • PC7 · (7S)-4-hydroxy-N,N,N-trimethyl-9-oxo-7-[(palmitoyloxy) methyl]-3,5,8-trioxa-4-phosphahexacosan-1-aminium 4-oxide · ligand · 2 copies · chains L, M, c, N, f, v
  • 8Q1 · S-[2-({N-[(2R)-2-hydroxy-3,3-dimethyl-4-(phosphonooxy) butanoyl]-beta-alanyl}amino)ethyl] dodecanethioate · ligand · 2 copies · chains U, W, L, T, n
  • FMN · Flavin mononucleotide · ligand · chains F
  • UQ9 · Ubiquinone-9 · ligand · chains B, H, a
  • LMN · Lauryl Maltose Neopentyl Glycol · ligand · chains M, N, d
  • NDP · Nadph dihydro-nicotinamide-adenine-dinucleotide phosphate · ligand · chains B, P
  • PGT · (1S)-2-{[{[(2R)-2,3-dihydroxypropyl]oxy}(hydroxy) phosphoryl]oxy}-1-[(palmitoyloxy)methyl]ethyl stearate · ligand · chains N, f, y, z
  • PSF · 1,2-dicaproyl-sn-phosphatidyl-L-serine · ligand · chains N, d, x, z
  • T7X · Phosphatidylinositol · ligand · chains f, v, y, z
  • ZN · Zinc ion · metal · 2 copies · chains R, 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
110820.860.86105empty
28030.860.8890NDP
37470.850.8989empty
49610.850.8675empty
55080.840.9161empty

Interfaces

152 interfaces between chains.

  • x–z · 2650 Ų buried · 29 hydrogen bonds · protein-protein
  • y–z · 2624 Ų buried · 25 hydrogen bonds · protein-protein
  • A–H · 2593 Ų buried · 4 hydrogen bonds · protein-protein
  • x–y · 2523 Ų buried · 24 hydrogen bonds · protein-protein
  • L–M · 2434 Ų buried · 19 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 18 covalent, 5 disulfide (covalent ligand, disulfide).

Compared structures

  • 7AR7 · Cryo-EM structure of Arabidopsis thaliana complex-I (open conformation) · the same entry in another collection · chain I against I, TM-score 1.00

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