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Structure of a 60 nm small molecule bound to a hot spot on il-2

Analyse Structure of a 60 nm small molecule bound to a hot spot on il-2 in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.

PDB
1PY2
Type
protein
Length
468 residues
Chains
4
Method
x-ray diffraction
Collection
MolNFT v1 / PDB
Contract
0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
Owner
0x3396CDB397284571d12822B4ae1189a8E22AAAAA
Molecule
Interleukin-2
UniProt
P60568
Ligands
FRH, ZN
Pockets
2 · best druggability 0.35

Structure

x-ray diffraction · 4 distinct chains · 67% helix, 3% strand (DSSP).

ChainMoleculeTypeResiduesSecondary structureUniProt
AInterleukin-2protein11768% helix, 3% strandP60568
BInterleukin-2protein11671% helix, 3% strandP60568
CInterleukin-2protein11559% helix, 3% strandP60568
DInterleukin-2protein12070% helix, 3% strandP60568

Ligands and binding sites

  • FRH · 5-[2,3-dichloro-4-(5-{1-[2-(2-guanidino-4-methyl-pentanoylamino)-acetyl]-piperidin-4-yl}-1-methyl-1H-pyrazol-3-yl)-phenoxymethyl]-furan-2-carboxylic acid · ligand · 4 copies · chains A, B, C, D
  • ZN · Zinc ion · metal · 3 copies · chains B, C

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

Pockets

2 pockets found on a 1 Å grid, 0 with a druggability of 0.5 or more.

PocketVolume (ų)DruggabilityBuriednessLining residuesInside
1990.350.7414empty
2520.290.7513empty

Interfaces

1 interface between chains.

  • B–C · 142 Ų buried · 1 hydrogen bond · protein-protein

Modifications

Observed in the structure: 4 disulfide (disulfide).

Compared structures

  • 1PY2 · Structure of a 60 nM Small Molecule Bound to a Hot Spot on IL-2 · the same entry in another collection · chain D against D, TM-score 1.00
  • P60568 · AlphaFold monomer V2.0 prediction for interleukin-2 (P60568) · a predicted model of the same protein · chain C against A, TM-score 0.96

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