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Crystal structure of the galectin-8 N-terminal carbohydrate recognition domain in complex with lactose 3'-sulfate

Analyse Crystal structure of the galectin-8 N-terminal carbohydrate recognition domain… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
3AP6
Type
protein
Length
583 residues
Chains
4
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Galectin-8
UniProt
O00214
Ligands
BGC, GAL, SO4
Pockets
6 · best druggability 0.59

Structure

x-ray diffraction · 4 distinct chains · 2% helix, 55% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
AGalectin-8protein1462% helix, 55% strandO00214
BGalectin-8protein1452% helix, 52% strandO00214
CGalectin-8protein1452% helix, 56% strandO00214
DGalectin-8protein1472% helix, 55% strandO00214

Ligands and binding sites

  • BGC · beta-D-glucopyranose · sugar · 4 copies · chains A, B, C, D
  • GAL · beta-D-galactopyranose · sugar · 4 copies · chains A, B, C, D
  • SO4 · Sulfate ion · ion · 4 copies · chains A, B, C, D

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

Pockets

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

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
14100.590.7660empty
22560.530.7629empty
31610.440.7525empty
4600.430.8215empty
5830.360.7616empty

Interfaces

4 interfaces between chains.

  • B–D · 476 Ų buried · 5 hydrogen bonds · protein-protein
  • C–D · 420 Ų buried · 10 hydrogen bonds · protein-protein
  • A–C · 300 Ų buried · 6 hydrogen bonds · protein-protein
  • A–B · 64 Ų buried · 1 hydrogen bond · protein-protein

Compared structures

  • 3AP6 · Crystal structure of the galectin-8 N-terminal carbohydrate recognition domain in complex… · the same entry in another collection · chain D against D, TM-score 1.00
  • O00214 · AlphaFold monomer V2.0 prediction for galectin-8 (O00214) · a predicted model of the same protein · chain C against A, TM-score 1.00

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