SMTL ID : 3rqw.1 (1 other biounit)

Crystal structure of acetylcholine bound to a prokaryotic pentameric ligand-gated ion channel, ELIC

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 2.91 Å

Oligo State

homo-pentamer

Ligands

5 x ACH: ACETYLCHOLINE(Non-covalent)

ACH.1: 11 residues within 4Å: Chain A: F.19, Y.38, N.103 Chain B: E.77, I.79, E.131, P.132, F.133, Y.175, L.178, F.188 6 PLIP interactions: 3 interactions with chain B, 3 interactions with chain A Salt bridges: B:E.77, B:E.131 pi-Cation interactions: B:F.188 Hydrophobic interactions: A:F.19, A:Y.38 Hydrogen bonds: A:N.103 ACH.5: 11 residues within 4Å: Chain B: F.19, Y.38, N.103 Chain C: E.77, I.79, E.131, P.132, F.133, Y.175, L.178, F.188 6 PLIP interactions: 3 interactions with chain C, 3 interactions with chain B Salt bridges: C:E.77, C:E.131 pi-Cation interactions: C:F.188 Hydrophobic interactions: B:F.19, B:Y.38 Hydrogen bonds: B:N.103 ACH.10: 10 residues within 4Å: Chain C: F.19, Y.38, N.103 Chain D: E.77, E.131, P.132, F.133, Y.175, L.178, F.188 7 PLIP interactions: 3 interactions with chain C, 4 interactions with chain D Hydrophobic interactions: C:F.19, C:Y.38, D:L.178 Hydrogen bonds: C:N.103 Salt bridges: D:E.77, D:E.131 pi-Cation interactions: D:F.188 ACH.13: 11 residues within 4Å: Chain D: F.19, Y.38, N.103 Chain E: E.77, I.79, E.131, P.132, F.133, Y.175, L.178, F.188 6 PLIP interactions: 3 interactions with chain D, 3 interactions with chain E Hydrophobic interactions: D:F.19, D:Y.38 Hydrogen bonds: D:N.103 Salt bridges: E:E.77, E:E.131 pi-Cation interactions: E:F.188 ACH.18: 11 residues within 4Å: Chain A: E.77, I.79, E.131, P.132, F.133, Y.175, L.178, F.188 Chain E: F.19, Y.38, N.103 6 PLIP interactions: 3 interactions with chain A, 3 interactions with chain E Salt bridges: A:E.77, A:E.131 pi-Cation interactions: A:F.188 Hydrophobic interactions: E:F.19, E:Y.38 Hydrogen bonds: E:N.103

5 x MES: 2-(N-MORPHOLINO)-ETHANESULFONIC ACID(Non-covalent)

MES.2: 3 residues within 4Å: Chain A: W.206 Chain B: T.259, Q.264 1 PLIP interactions: 1 interactions with chain B Hydrogen bonds: B:Q.264 MES.6: 3 residues within 4Å: Chain B: W.206 Chain C: T.259, Q.264 2 PLIP interactions: 1 interactions with chain C, 1 interactions with chain B Hydrogen bonds: C:Q.264, B:W.206 MES.14: 5 residues within 4Å: Chain C: S.202, W.206 Chain D: T.259, Q.264, I.267 2 PLIP interactions: 1 interactions with chain D, 1 interactions with chain C Hydrogen bonds: D:Q.264 pi-Cation interactions: C:W.206 MES.15: 3 residues within 4Å: Chain D: W.206 Chain E: T.259, Q.264 1 PLIP interactions: 1 interactions with chain E Hydrogen bonds: E:Q.264 MES.19: 3 residues within 4Å: Chain A: T.259, Q.264 Chain E: W.206 2 PLIP interactions: 1 interactions with chain E, 1 interactions with chain A Hydrogen bonds: E:W.206, A:Q.264

11 x GOL: GLYCEROL(Non-functional Binders)

GOL.3: 5 residues within 4Å: Chain A: V.73, P.74, A.75, L.76, Y.102 2 PLIP interactions: 2 interactions with chain A Hydrogen bonds: A:L.76, A:L.76 GOL.4: 6 residues within 4Å: Chain A: P.11, N.136, N.137, Q.138, D.172, E.187 3 PLIP interactions: 3 interactions with chain A Hydrogen bonds: A:N.136, A:N.137, A:D.172 GOL.7: 5 residues within 4Å: Chain B: N.60, T.87, G.88, N.89 Chain C: S.84 1 PLIP interactions: 1 interactions with chain C Hydrogen bonds: C:S.84 GOL.8: 4 residues within 4Å: Chain B: R.174, Y.175, D.176, H.177 3 PLIP interactions: 3 interactions with chain B Hydrogen bonds: B:D.176, B:H.177, B:H.177 GOL.9: 5 residues within 4Å: Chain B: P.11, N.136, N.137, Q.138, E.187 1 PLIP interactions: 1 interactions with chain B Hydrogen bonds: B:E.187 GOL.11: 6 residues within 4Å: Chain C: V.73, P.74, A.75, L.76, K.90, Y.102 3 PLIP interactions: 3 interactions with chain C Hydrogen bonds: C:P.74, C:L.76, C:Y.102 GOL.12: 5 residues within 4Å: Chain C: P.11, N.136, N.137, Q.138, E.187 1 PLIP interactions: 1 interactions with chain C Water bridges: C:Q.185 GOL.16: 4 residues within 4Å: Chain D: P.74, A.75, K.90, Y.102 1 PLIP interactions: 1 interactions with chain D Hydrogen bonds: D:K.90 GOL.17: 5 residues within 4Å: Chain D: N.136, N.137, Q.138, D.172, E.187 3 PLIP interactions: 3 interactions with chain D Hydrogen bonds: D:N.136, D:D.172, D:E.187 GOL.20: 5 residues within 4Å: Chain A: S.84, P.85 Chain E: T.87, G.88, N.89 1 PLIP interactions: 1 interactions with chain A Hydrogen bonds: A:S.84 GOL.21: 5 residues within 4Å: Chain E: N.136, N.137, Q.138, D.172, E.187 1 PLIP interactions: 1 interactions with chain E Hydrogen bonds: E:N.136

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Pan, J. et al., Structure of the pentameric ligand-gated ion channel ELIC cocrystallized with its competitive antagonist acetylcholine. Nat Commun (2012)

Release Date

2012-03-07

Peptides

ELIC Pentameric Ligand Gated Ion Channel from Erwinia Chrysanthemi: ABCDE

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

C
C

D
D

E
E

Membrane

We predict this structure to be a membrane protein.
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ELIC Pentameric Ligand Gated Ion Channel from Erwinia Chrysanthemi

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