SMTL ID : 8qx2.1

Aplysia californica acetylcholine-binding protein in complex with with racemic spiroimine (+)/(-)-4

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 2.10 Å

Oligo State

homo-pentamer

Ligands

5 x ILR: Spiroimine (+)-4 R(Non-covalent)

ILR.1: 7 residues within 4Å: Chain A: Y.102, S.155, W.156, Y.197, Y.204 Chain B: Y.64, I.127 8 PLIP interactions: 6 interactions with chain A, 2 interactions with chain B Hydrophobic interactions: A:Y.102, A:Y.102, A:W.156, A:W.156, A:W.156, A:Y.197, B:Y.64, B:Y.64 ILR.2: 7 residues within 4Å: Chain B: Y.102, S.155, W.156, Y.197, Y.204 Chain C: Y.64, I.127 5 PLIP interactions: 3 interactions with chain B, 2 interactions with chain C Hydrophobic interactions: B:W.156, B:W.156, B:Y.197, C:Y.64, C:I.127 ILR.3: 6 residues within 4Å: Chain C: Y.102, S.155, W.156, Y.197, Y.204 Chain D: Y.64 4 PLIP interactions: 3 interactions with chain C, 1 interactions with chain D Hydrophobic interactions: C:W.156, C:W.156, C:Y.197, D:Y.64 ILR.5: 6 residues within 4Å: Chain D: Y.102, S.155, W.156, Y.197, Y.204 Chain E: Y.64 6 PLIP interactions: 4 interactions with chain D, 2 interactions with chain E Hydrophobic interactions: D:Y.102, D:W.156, D:W.156, D:Y.197, E:Y.64, E:Y.64 ILR.6: 6 residues within 4Å: Chain A: Y.64 Chain E: Y.102, S.155, W.156, Y.197, Y.204 4 PLIP interactions: 3 interactions with chain E, 1 interactions with chain A Hydrophobic interactions: E:Y.102, E:W.156, E:Y.197, A:Y.64

1 x IPA: ISOPROPYL ALCOHOL(Non-functional Binders)

IPA.4: 9 residues within 4Å: Chain C: A.101, Y.102, S.103, S.104, W.156 Chain D: Q.47, V.62, L.111, A.129 3 PLIP interactions: 2 interactions with chain D, 1 interactions with chain C Hydrophobic interactions: D:V.62, D:L.111 Hydrogen bonds: C:A.101

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Bourne, Y. et al., The Cyclic Imine Core Common to the Marine Macrocyclic Toxins Is Sufficient to Dictate Nicotinic Acetylcholine Receptor Antagonism. Mar Drugs (2024)

Release Date

2024-04-03

Peptides

Soluble acetylcholine receptor: ABCDE

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

C
C

D
D

E
E

Soluble acetylcholine receptor

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