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MolNFT v1 · #123453 · protein

Crystal structure of human IZUMO1

5JK9 · Izumo sperm-egg fusion protein 1: “Crystal structure of human IZUMO1”. X-ray diffraction, 1 ligand (NAG), 13 pockets (best druggability 0.68). MolNFT v1 #123453 on GenesisL1: 3D structure, binding sites and pockets in GL1X.

PDB
5JK9
Type
protein
Length
1,390 residues
Chains
6
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Izumo sperm-egg fusion protein 1
UniProt
Q8IYV9
Ligands
NAG
Pockets
13 · best druggability 0.68

Structure

x-ray diffraction · 6 distinct chains · 40% helix, 28% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
AIzumo sperm-egg fusion protein 1protein24139% helix, 28% strandQ8IYV9
BIzumo sperm-egg fusion protein 1protein23141% helix, 29% strandQ8IYV9
CIzumo sperm-egg fusion protein 1protein23740% helix, 29% strandQ8IYV9
DIzumo sperm-egg fusion protein 1protein21242% helix, 22% strandQ8IYV9
EIzumo sperm-egg fusion protein 1protein23140% helix, 29% strandQ8IYV9
FIzumo sperm-egg fusion protein 1protein23841% helix, 27% strandQ8IYV9

Ligands and binding sites

  • NAG · 2-acetamido-2-deoxy-beta-D-glucopyranose · sugar · 6 copies · chains A, B, C, D, E, F

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

Pockets

13 pockets found on a 1 Å grid, 7 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
17680.680.7556empty
26120.640.7456empty
33140.580.7744empty
42500.570.7837empty
53270.560.7632empty

Interfaces

7 interfaces between chains.

  • C–E · 950 Ų buried · 13 hydrogen bonds · protein-protein
  • A–B · 945 Ų buried · 13 hydrogen bonds · protein-protein
  • B–D · 408 Ų buried · 3 hydrogen bonds · protein-protein
  • E–F · 309 Ų buried · 7 hydrogen bonds · protein-protein
  • B–F · 108 Ų buried · 1 hydrogen bond · protein-protein

Modifications

Observed in the structure: 30 disulfide, 6 glycan (disulfide, N-glycosylation).

Compared structures

  • 5JK9 · Crystal structure of human IZUMO1 · the same entry in another collection · chain F against F, TM-score 1.00
  • Q8IYV9 · AlphaFold monomer V2.0 prediction for izumo sperm-egg fusion protein 1 (Q8IYV9) · a predicted model of the same protein · chain E against A, TM-score 0.98

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