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Dunaliella photosystem I supercomplex

Analyse Dunaliella photosystem I supercomplex in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
6SL5
Type
protein
Length
3,744 residues
Chains
19
Method
electron microscopy
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Photosystem I P700 chlorophyll a apoprotein A1; Photosystem I P700 chlorophyll a…
EC
1.97.1.12
UniProt
D0FXV2, D0FXZ0, D0FXW7, D0FXW0, C1K003
Ligands
CLA, BCR, LHG, CHL, PTY, LUT, LMG, XAT, LMU, DGD, 3PH, SF4, SQD, PQN, 4RF, LMK…
Pockets
20 · best druggability 0.83

Structure

electron microscopy · 19 distinct chains · 51% helix, 4% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
APhotosystem I P700 chlorophyll a apoprotein A1 (EC 1.97.1.12)protein74058% helix, 4% strandD0FXV2
BPhotosystem I P700 chlorophyll a apoprotein A2 (EC 1.97.1.12)protein73358% helix, 2% strandD0FXZ0
CPhotosystem I iron-sulfur center (EC 1.97.1.12)protein8015% helix, 21% strandD0FXW7
DPsadprotein14313% helix, 24% strand—
EPsaeprotein640% helix, 34% strand—
FPsafprotein16253% helix, 4% strand—
JPhotosystem I reaction center subunit IXprotein4166% helix, 0% strandD0FXW0
GPsagprotein10146% helix, 0% strand—
HPsahprotein9234% helix, 0% strand—
IPsaiprotein3962% helix, 0% strand—
KPsakprotein8450% helix, 5% strand—
LPsalprotein15557% helix, 1% strand—
OPsaoprotein8656% helix, 0% strand—
1Chlorophyll a-B binding protein, chloroplasticprotein19753% helix, 0% strandC1K003
2LHCA2protein20849% helix, 0% strand—
3Chlorophyll a-B binding protein, chloroplasticprotein22848% helix, 0% strand—
4LHCA4protein21146% helix, 1% strand—
5LHCA5protein20254% helix, 1% strand—
6LHCA6protein17855% helix, 0% strand—

Ligands and binding sites

  • CLA · Chlorophyll A · ligand · 172 copies · chains A, B, F, J, 3, K, O, L, H, I, G, 6, 1, 5, 4, 2
  • BCR · Beta-carotene · ligand · 31 copies · chains A, K, O, B, G, 6, F, J, H, L, I, 1, 2, 3, 4
  • LHG · 1,2-dipalmitoyl-phosphatidyl-glycerole · ligand · 15 copies · chains A, B, 1, F, 4, G, 2, 3, J, 5, 6
  • CHL · Chlorophyll B · ligand · 13 copies · chains 1, 4, G, 2, 3, 5, 6, B
  • PTY · Phosphatidylethanolamine · ligand · 9 copies · chains L, K, O, F, J, 1, A, 2, 3, 4, H, I, 5, B
  • LUT · (3R,3'R,6S)-4,5-didehydro-5,6-dihydro-beta,beta-carotene-3,3'-diol · ligand · 9 copies · chains 1, 2, 3, 4, 5, B, 6
  • LMG · 1,2-distearoyl-monogalactosyl-diglyceride · ligand · 8 copies · chains F, J, G, 1, 2, 4, A, 3, B, 5, 6
  • XAT · (3S,5R,6S,3'S,5'R,6'S)-5,6,5',6'-diepoxy-5,6,5',6'-tetrahydro-beta,beta-carotene-3,3'-diol · ligand · 6 copies · chains 1, 2, 3, 4, 6
  • LMU · Dodecyl-alpha-D-maltoside · ligand · 4 copies · chains A, J, B, 6
  • DGD · Digalactosyl diacyl glycerol (dgdg) · ligand · 4 copies · chains B, C, 2, 4, 3, A
  • 3PH · 1,2-diacyl-glycerol-3-sn-phosphate · ligand · 4 copies · chains B, I, F, 5
  • SF4 · Iron/sulfur cluster · ligand · 3 copies · chains A, B, C
  • SQD · 1,2-di-O-acyl-3-O-[6-deoxy-6-sulfo-alpha-D-glucopyranosyl]-sn-glycerol · ligand · 3 copies · chains F, 2, A, 3, 6
  • PQN · Phylloquinone · ligand · 2 copies · chains A, B
  • 4RF · Tripalmitoylglycerol · ligand · 2 copies · chains A, L, H, I, 5
  • LMK · trimethyl-[(2~{R})-1-oxidanyl-1-oxidanylidene-4-[(2~{S})-2-[(1~{S})-1-oxidanyloctadecoxy]-3-[(1~{R})-1-oxidanyloctadecoxy]propoxy]butan-2-yl]azanium · ligand · 2 copies · chains J, 4
  • P3H · [(2~{R})-1-nonanoyloxy-3-[oxidanyl-[(2~{R},3~{S},5~{R}, 6~{R})-2,3,4,5,6-pentakis(oxidanyl)cyclohexyl]oxy-phosphoryl]oxy-propan-2-yl] (5~{Z},8~{Z})-heptadeca-5, 8-dienoate · ligand · 2 copies · chains A, 2, B, I, 5
  • CL0 · Chlorophyll A isomer · ligand · chains A, B
  • OCD · octadecanal · ligand · chains A
  • CA · Calcium ion · metal · chains B

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
110430.830.84113empty
27320.770.8162DGD
37000.700.7766CLA
44010.690.8147empty
52120.690.8526CLA

Interfaces

48 interfaces between chains.

  • A–B · 3598 Ų buried · 39 hydrogen bonds · protein-protein
  • H–L · 1989 Ų buried · 24 hydrogen bonds · protein-protein
  • C–D · 1602 Ų buried · 27 hydrogen bonds · protein-protein
  • B–G · 1499 Ų buried · 16 hydrogen bonds · protein-protein
  • A–F · 1167 Ų buried · 15 hydrogen bonds · protein-protein

Compared structures

  • 6SL5 · Dunaliella Photosystem I Supercomplex · the same entry in another collection · chain A against A, TM-score 1.00

Analyse

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