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X-ray structure of IGLUR5 ligand-binding core (S1S2) in complex with msviii-19 at 2.10A resolution

Analyse X-ray structure of IGLUR5 ligand-binding core (S1S2) in complex with msviii-19… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
3GBB
Type
protein
Length
512 residues
Chains
2
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Glutamate receptor, ionotropic kainate 1
UniProt
P22756
Ligands
MS8
Pockets
4 · best druggability 0.78

Structure

x-ray diffraction · 2 distinct chains · 36% helix, 21% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
AGlutamate receptor, ionotropic kainate 1protein25536% helix, 22% strandP22756
BGlutamate receptor, ionotropic kainate 1protein25736% helix, 21% strandP22756

Ligands and binding sites

  • MS8 · (2R,3aR,7aR)-2-[(2S)-2-amino-3-hydroxy-3-oxo-propyl]-3,3a,5,6,7,7a-hexahydrofuro[4,5-b]pyran-2-carboxylic acid · ligand · 2 copies · chains A, B

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

Pockets

4 pockets found on a 1 Å grid, 2 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
19010.780.8197MS8
21830.720.8936MS8
31410.430.7527empty
4530.290.7516empty

Interfaces

1 interface between chains.

  • A–B · 478 Ų buried · 5 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 2 disulfide (disulfide).

Compared structures

  • 3GBB · X-ray structure of iGluR5 ligand-binding core (S1S2) in complex with MSVIII-19 at 2.10A… · the same entry in another collection · chain B against B, TM-score 1.00
  • P22756 · AlphaFold monomer V2.0 prediction for glutamate receptor ionotropic, kainate 1 (P22756) · a predicted model of the same protein · chain A against A, TM-score 0.95

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