SMTL ID : 9omt.1

X-ray structure of paraoxon (POX)-inhibited human acetylcholinesterase (hAChE) in complex with bis-oxime reactivator LG-1922

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 2.70 Å

Oligo State

homo-dimer

Ligands

2 x DEP: DIETHYL PHOSPHONATE(Covalent)

DEP.1: 12 residues within 4Å: Chain A: G.124, G.125, S.206, A.207, W.239, F.298, F.300, Y.340, F.341, V.410, H.450 Ligands: DMS.5 7 PLIP interactions: 7 interactions with chain A Hydrophobic interactions: A:W.239, A:F.298, A:V.410 Hydrogen bonds: A:G.124, A:G.125, A:A.207 Salt bridges: A:H.450 DEP.6: 11 residues within 4Å: Chain B: G.124, G.125, S.206, A.207, W.239, F.298, F.300, F.341, V.410, H.450 Ligands: DMS.9 7 PLIP interactions: 7 interactions with chain B Hydrophobic interactions: B:W.239, B:F.298, B:V.410 Hydrogen bonds: B:G.124, B:G.125, B:A.207 Salt bridges: B:H.450

2 x GOL: GLYCEROL(Non-functional Binders)

GOL.2: 9 residues within 4Å: Chain A: E.84, M.88, A.437, T.439, L.440, S.441, Y.452, E.455, Y.468 5 PLIP interactions: 5 interactions with chain A Hydrogen bonds: A:E.84, A:T.439, A:T.439, A:S.441, A:S.441 GOL.7: 9 residues within 4Å: Chain B: E.84, M.88, A.437, T.439, L.440, S.441, Y.452, E.455, Y.468 4 PLIP interactions: 4 interactions with chain B Hydrogen bonds: B:T.439, B:S.441, B:S.441, B:Y.468

1 x NO3: NITRATE ION(Non-functional Binders)

NO3.3: 4 residues within 4Å: Chain A: K.335, D.336, E.399, W.445 3 PLIP interactions: 3 interactions with chain A Hydrogen bonds: A:K.335, A:K.335, A:W.445

2 x 01: (2E)-2-(hydroxyimino)-N-{3-[(3R)-3-(2-{[(2E)-2-(hydroxyimino)acetyl]amino}ethyl)piperidin-1-yl]propyl}acetamide

01.4: 8 residues within 4Å: Chain A: Y.75, Y.127, W.289, V.297, F.298, Y.340, F.341, Y.344 2 PLIP interactions: 2 interactions with chain A Hydrophobic interactions: A:Y.75 Hydrogen bonds: A:F.298 01.8: 7 residues within 4Å: Chain B: Y.75, Y.127, W.289, V.297, F.298, F.300, Y.344 6 PLIP interactions: 6 interactions with chain B Hydrophobic interactions: B:W.289, B:W.289 Hydrogen bonds: B:Y.127, B:F.298 pi-Cation interactions: B:W.289, B:W.289

2 x DMS: DIMETHYL SULFOXIDE(Non-functional Binders)

DMS.5: 5 residues within 4Å: Chain A: W.89, E.205, H.450, G.451 Ligands: DEP.1 3 PLIP interactions: 3 interactions with chain A Water bridges: A:G.123 Salt bridges: A:E.205 pi-Cation interactions: A:W.89 DMS.9: 8 residues within 4Å: Chain B: W.89, G.123, G.124, E.205, S.206, H.450, G.451 Ligands: DEP.6 3 PLIP interactions: 3 interactions with chain B Water bridges: B:G.123 Salt bridges: B:E.205 pi-Cation interactions: B:W.89

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Kolic, D. et al., Kinetic and structural evidence for specific DMSO interference with reversible binding of uncharged bis-oximes to hAChE and their reactivation kinetics of OP-hAChE. Chem.Biol.Interact. (2025)

Release Date

2025-07-30

Peptides

Acetylcholinesterase: AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

Acetylcholinesterase

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