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Cryo-EM reveals partially and fully assembled native glycine receptors,homomeric tetramer

Analyse Cryo-EM reveals partially and fully assembled native glycine… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
7MLV
Type
protein
Length
1,919 residues
Chains
12
Method
electron microscopy
Collection
MolNFT v2 / PDB Bank
Contract
0xd58B01f6C18086e5202cdC5D7Ad3E41790360102
Owner
0xF4e1AA6f26B7DA48EeAD9B24a97927303eeA07b8
Resolution
4.1
Source
Rattus norvegicus; Sus scrofa
Molecule
3D1 Fab Light Chain; 3D1 Fab Heavy Chain; Glycine receptor alpha 1
UniProt
F1RQB7
Ligands
MAN, NAG, BMA
Pockets
20 · best druggability 0.81

Structure

electron microscopy · resolution 4.1 · 8 distinct chains · 15% helix, 23% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
J3D1 Fab Light Chainprotein1010% helix, 26% strand—
G, F, L, H3D1 Fab Heavy Chainprotein1150% helix, 37% strand—
K3D1 Fab Light Chainprotein1020% helix, 15% strand—
M, I3D1 Fab Light Chainprotein1030% helix, 36% strand—
DGlycine receptor alpha 1protein1708% helix, 23% strandF1RQB7
AGlycine receptor alpha 1protein31022% helix, 18% strandF1RQB7
BGlycine receptor alpha 1protein29624% helix, 21% strandF1RQB7
CGlycine receptor alpha 1protein27423% helix, 20% strandF1RQB7

Ligands and binding sites

  • MAN · alpha-D-mannopyranose · sugar · 10 copies · chains I
  • NAG · 2-acetamido-2-deoxy-beta-D-glucopyranose · sugar · 8 copies · chains A, B, I, C, D
  • BMA · beta-D-mannopyranose · sugar · 4 copies

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

Pockets

20 pockets found on a 1 Å grid, 20 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
19760.810.83102empty
210750.810.82103empty
38010.810.8495empty
410400.810.8299empty
53240.800.9058empty

Interfaces

21 interfaces between chains.

  • B–C · 1844 Ų buried · 12 hydrogen bonds · protein-protein
  • A–B · 1688 Ų buried · 2 hydrogen bonds · protein-protein
  • D–C · 878 Ų buried · 6 hydrogen bonds · protein-protein
  • J–G · 852 Ų buried · 9 hydrogen bonds · protein-protein
  • I–H · 836 Ų buried · 9 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 15 disulfide, 3 glycan (disulfide, N-glycosylation).

Compared structures

  • 7MLV · Cryo-EM reveals partially and fully assembled native glycine RECEPTORS,HOMOMERIC tetramer · the same entry in another collection · chain A against A, TM-score 1.00

Analyse

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