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X-ray structure of soluble epcr in P212121 space group

Analyse X-ray structure of soluble epcr in P212121 space group in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
7OKS
Type
protein
Length
671 residues
Chains
4
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Endothelial protein C receptor
UniProt
Q9UNN8
Ligands
PTY, NAG, FUC, BMA, MAN
Pockets
8 · best druggability 0.83

Structure

x-ray diffraction · 4 distinct chains · 38% helix, 38% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
AEndothelial protein C receptorprotein16839% helix, 38% strandQ9UNN8
BEndothelial protein C receptorprotein16737% helix, 38% strandQ9UNN8
CEndothelial protein C receptorprotein16639% helix, 37% strandQ9UNN8
DEndothelial protein C receptorprotein17036% helix, 39% strandQ9UNN8

Ligands and binding sites

  • PTY · Phosphatidylethanolamine · ligand · 4 copies · chains A, B, C, D
  • NAG · 2-acetamido-2-deoxy-beta-D-glucopyranose · sugar · 20 copies · chains A, B, C, D
  • FUC · alpha-L-fucopyranose · sugar · 4 copies · chains B, C, D
  • BMA · beta-D-mannopyranose · sugar
  • MAN · alpha-D-mannopyranose · sugar · chains D
  • EDO · 1,2-ethanediol · additive · 7 copies · chains A, B, C, D

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

Pockets

8 pockets found on a 1 Å grid, 6 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
19720.830.84101NAG, PTY
24620.820.8852PTY
36410.800.8565PTY
45450.790.8562PTY
51850.530.7824empty

Interfaces

4 interfaces between chains.

  • A–C · 720 Ų buried · 16 hydrogen bonds · protein-protein
  • B–D · 500 Ų buried · 12 hydrogen bonds · protein-protein
  • C–D · 393 Ų buried · 3 hydrogen bonds · protein-protein
  • A–B · 207 Ų buried · 3 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 12 glycan, 4 disulfide (N-glycosylation, disulfide).

Compared structures

  • 7OKS · X-ray structure of soluble EPCR in P212121 space group · the same entry in another collection · chain D against D, TM-score 1.00
  • Q9UNN8 · AlphaFold monomer V2.0 prediction for endothelial protein C receptor (Q9UNN8) · a predicted model of the same protein · chain B against A, TM-score 0.99

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