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Crystal structure of Butea monosperma seed lectin

Analyse Crystal structure of Butea monosperma seed lectin in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
3USU
Type
protein
Length
1,968 residues
Chains
8
Method
x-ray diffraction
Collection
MolNFT v2 / PDB Bank
Contract
0xd58B01f6C18086e5202cdC5D7Ad3E41790360102
Owner
0xF4e1AA6f26B7DA48EeAD9B24a97927303eeA07b8
Resolution
2.46
Source
Butea monosperma
Molecule
Lectin Alpha chain; Lectin Beta Chain
Ligands
ABU, NAG, FUC, BMA, MAN, XYP, CA, MN
Pockets
13 · best druggability 0.82

Structure

x-ray diffraction · resolution 2.46 · 2 distinct chains · 6% helix, 45% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
A, C, E, GLectin Alpha chainprotein2507% helix, 44% strand—
B, D, F, HLectin Beta Chainprotein2425% helix, 46% strand—

Ligands and binding sites

  • ABU · Gamma-amino-butanoic acid · ligand · 8 copies · chains A, D, B, C, E, H, F, G
  • NAG · 2-acetamido-2-deoxy-beta-D-glucopyranose · sugar · 12 copies · chains A, H, B, C, E, G, D
  • FUC · alpha-L-fucopyranose · sugar · 5 copies · chains H
  • BMA · beta-D-mannopyranose · sugar · 4 copies
  • MAN · alpha-D-mannopyranose · sugar
  • XYP · beta-D-xylopyranose · sugar
  • CA · Calcium ion · metal · 8 copies · chains A, B, C, D, E, F, G, H
  • MN · Manganese (II) ion · metal · 8 copies · chains A, B, C, D, E, F, G, H
  • GOL · Glycerol · additive · 8 copies · chains A, B, C, D, E, F, G, H

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
14700.820.8961GOL
25360.820.8866GOL
34850.810.8863GOL
45420.810.8747empty
54100.810.8952GOL

Interfaces

13 interfaces between chains.

  • F–G · 1104 Ų buried · 30 hydrogen bonds · protein-protein
  • E–H · 1099 Ų buried · 30 hydrogen bonds · protein-protein
  • A–D · 1043 Ų buried · 29 hydrogen bonds · protein-protein
  • B–C · 1023 Ų buried · 22 hydrogen bonds · protein-protein
  • G–H · 978 Ų buried · 10 hydrogen bonds · protein-protein

Modifications

Observed in the structure: 7 glycan (N-glycosylation).

Compared structures

  • 3USU · Crystal structure of butea monosperma seed lectin · the same entry in another collection · chain A against A, TM-score 1.00

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