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Structure of the ampar GLUA3 N-terminal domain bound to phosphate

Analyse Structure of the ampar GLUA3 N-terminal domain bound to phosphate in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
6FPJ
Type
protein
Length
1,118 residues
Chains
3
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Glutamate receptor 3
UniProt
P19492
Ligands
NAG, PO4
Pockets
12 · best druggability 0.76

Structure

x-ray diffraction · 3 distinct chains · 37% helix, 23% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
AGlutamate receptor 3protein37437% helix, 23% strandP19492
BGlutamate receptor 3protein37937% helix, 23% strandP19492
CGlutamate receptor 3protein36537% helix, 23% strandP19492

Ligands and binding sites

  • NAG · 2-acetamido-2-deoxy-beta-D-glucopyranose · sugar · 8 copies · chains A, B, C
  • PO4 · Phosphate ion · ion · 7 copies · chains A, B, C
  • DMS · Dimethyl sulfoxide · additive · 7 copies · chains A, C, B
  • GOL · Glycerol · additive · chains B

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

Pockets

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

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
112000.760.79116DMS
210370.730.7696PO4, NAG, DMS
33340.660.8131DMS
43030.660.8127DMS
53340.650.8025DMS

Interfaces

3 interfaces between chains.

  • A–C · 1672 Ų buried · 22 hydrogen bonds · protein-protein
  • A–B · 443 Ų buried · 7 hydrogen bonds · protein-protein
  • B–C · 282 Ų buried · 2 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 8 glycan, 3 disulfide (N-glycosylation, disulfide).

Compared structures

  • 6FPJ · Structure of the AMPAR GluA3 N-terminal domain bound to phosphate · the same entry in another collection · chain A against A, TM-score 1.00
  • P19492 · AlphaFold monomer V2.0 prediction for glutamate receptor 3 (P19492) · a predicted model of the same protein · chain C against A, TM-score 0.98

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