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Crystal structure of the reaction centre from blastochloris viridis strain dsm 133 (atcc 19567) substrain-94

Analyse Crystal structure of the reaction centre from blastochloris viridis strain dsm… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
3T6E
Type
protein
Length
1,188 residues
Chains
4
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Photosynthetic reaction center cytochrome C subunit; Reaction center protein H chain…
UniProt
P07173, P06008, P06009, P06010
Ligands
HTO, HEC, DGA, BCB, BPB, UQ9, MQ9, NS5, FE2, SO4
Pockets
18 · best druggability 0.88

Structure

x-ray diffraction · 4 distinct chains · 50% helix, 8% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
CPhotosynthetic reaction center cytochrome C subunitprotein33443% helix, 4% strandP07173
HReaction center protein H chainprotein25826% helix, 23% strandP06008
LReaction center protein L chainprotein27366% helix, 4% strandP06009
MReaction center protein M chainprotein32363% helix, 5% strandP06010

Ligands and binding sites

  • HTO · Heptane-1,2,3-triol · ligand · 8 copies · chains C, L, H, M
  • HEC · Heme C · ligand · 4 copies · chains C, L, M
  • DGA · Diacyl glycerol · ligand · 4 copies · chains C, L, M, H
  • BCB · Bacteriochlorophyll B · ligand · 4 copies · chains L, M
  • BPB · Bacteriopheophytin B · ligand · 2 copies · chains L, M
  • UQ9 · Ubiquinone-9 · ligand · 2 copies · chains L, M
  • MQ9 · Menaquinone-9 · ligand · chains L, M
  • NS5 · 15-cis-1,2-dihydroneurosporene · ligand · chains M
  • FE2 · Fe (II) ion · metal · chains L, M
  • SO4 · Sulfate ion · ion · 26 copies · chains C, L, M, H
  • GOL · Glycerol · additive · 41 copies · chains C, L, H, M
  • LDA · Lauryl dimethylamine-N-oxide · additive · 16 copies · chains C, L, H, M

Binding sites are the residues within 4.5 Å of a ligand's heavy atoms.

Pockets

18 pockets found on a 1 Å grid, 12 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
110320.880.88127HEC
28600.840.8581BCB
32900.770.8949empty
4820.740.9723GOL
5600.730.9925empty

Interfaces

6 interfaces between chains.

  • L–M · 4430 Ų buried · 63 hydrogen bonds · protein-protein
  • H–M · 2876 Ų buried · 42 hydrogen bonds · protein-protein
  • C–M · 2741 Ų buried · 33 hydrogen bonds · protein-protein
  • H–L · 1912 Ų buried · 28 hydrogen bonds · protein-protein
  • C–L · 1772 Ų buried · 29 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 8 cofactor, 2 modified, 1 covalent (heme c attachment, covalent ligand, formylation, oxidation).

Compared structures

  • 3T6E · Crystal Structure of the Reaction Centre from Blastochloris viridis strain DSM 133 (ATCC… · the same entry in another collection · chain M against M, TM-score 1.00
  • P07173 · AlphaFold monomer V2.0 prediction for photosynthetic reaction center cytochrome C subunit… · a predicted model of the same protein · chain C against A, TM-score 1.00
  • P06009 · AlphaFold monomer V2.0 prediction for reaction center protein L chain (P06009) · a predicted model of the same protein · chain L against A, TM-score 0.99
  • P06010 · AlphaFold monomer V2.0 prediction for reaction center protein M chain (P06010) · a predicted model of the same protein · chain M against A, TM-score 0.97
  • P06008 · AlphaFold monomer V2.0 prediction for reaction center protein H chain (P06008) · a predicted model of the same protein · chain H against A, TM-score 0.94

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