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Crystal structure of human alpha-L-iduronidase complex with [2R,3R,4R, 5S]-2-carboxy-3,4,5-trihydroxy-piperidine

Analyse Crystal structure of human alpha-L-iduronidase complex with [2R,3R,4R… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
4KGL
Type
protein
Length
1,207 residues
Chains
2
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Alpha-L-iduronidase
EC
3.2.1.76
UniProt
P35475
Ligands
IDJ, NAG, MAN, BMA
Pockets
12 · best druggability 0.67

Structure

x-ray diffraction · 2 distinct chains · 25% helix, 30% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
AAlpha-L-iduronidase (EC 3.2.1.76)protein59525% helix, 31% strandP35475
BAlpha-L-iduronidase (EC 3.2.1.76)protein61225% helix, 30% strandP35475

Ligands and binding sites

  • IDJ · (2R,3R,4R,5S)-3,4,5-trihydroxypiperidine-2-carboxylic acid · ligand · 2 copies · chains A, B
  • NAG · 2-acetamido-2-deoxy-beta-D-glucopyranose · sugar · 10 copies · chains A, B
  • MAN · alpha-D-mannopyranose · sugar · 8 copies · chains A, B
  • BMA · beta-D-mannopyranose · sugar · 2 copies · chains A, B
  • GOL · Glycerol · additive · 5 copies · chains A, B
  • TLA · L(+)-tartaric acid · 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, 4 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
15630.670.7779NAG, GOL
2620.640.9318empty
31530.570.8219empty
41440.540.8121empty
51470.490.7929empty

Interfaces

1 interface between chains.

  • A–B · 275 Ų buried · 1 hydrogen bond · protein-protein

Modifications

Observed in the structure: 6 glycan, 1 disulfide (N-glycosylation, disulfide).

Compared structures

  • 4KGL · Crystal structure of human alpha-L-iduronidase complex with… · the same entry in another collection · chain A against A, TM-score 1.00
  • P35475 · AlphaFold monomer V2.0 prediction for alpha-L-iduronidase (P35475) · a predicted model of the same protein · chain A against A, TM-score 1.00

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