SMTL ID : 2hg5.1

Cs+ complex of a K channel with an amide to ester substitution in the selectivity filter

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 2.75 Å

Oligo State

hetero-4-4-4-4-mer

Ligands

16 x CS: CESIUM ION(Non-covalent)(Non-functional Binders)

CS.1: 11 residues within 4Å: Chain C: T.54, V.55 Chain G: T.54, V.55 Chain K: T.54, V.55 Chain O: T.54, V.55 Ligands: CS.7, CS.13, CS.19 Ligand excluded by PLIP CS.2: 11 residues within 4Å: Chain C: G.56, Y.57 Chain G: G.56, Y.57 Chain K: G.56, Y.57 Chain O: G.56, Y.57 Ligands: CS.8, CS.14, CS.20 Ligand excluded by PLIP CS.3: 7 residues within 4Å: Chain C: T.54 Chain G: T.54 Chain K: T.54 Chain O: T.54 Ligands: CS.9, CS.15, CS.21 Ligand excluded by PLIP CS.5: 3 residues within 4Å: Ligands: CS.11, CS.17, CS.23 Ligand excluded by PLIP CS.7: 11 residues within 4Å: Chain C: T.54, V.55 Chain G: T.54, V.55 Chain K: T.54, V.55 Chain O: T.54, V.55 Ligands: CS.1, CS.13, CS.19 Ligand excluded by PLIP CS.8: 11 residues within 4Å: Chain C: G.56, Y.57 Chain G: G.56, Y.57 Chain K: G.56, Y.57 Chain O: G.56, Y.57 Ligands: CS.2, CS.14, CS.20 Ligand excluded by PLIP CS.9: 7 residues within 4Å: Chain C: T.54 Chain G: T.54 Chain K: T.54 Chain O: T.54 Ligands: CS.3, CS.15, CS.21 Ligand excluded by PLIP CS.11: 3 residues within 4Å: Ligands: CS.5, CS.17, CS.23 Ligand excluded by PLIP CS.13: 11 residues within 4Å: Chain C: T.54, V.55 Chain G: T.54, V.55 Chain K: T.54, V.55 Chain O: T.54, V.55 Ligands: CS.1, CS.7, CS.19 Ligand excluded by PLIP CS.14: 11 residues within 4Å: Chain C: G.56, Y.57 Chain G: G.56, Y.57 Chain K: G.56, Y.57 Chain O: G.56, Y.57 Ligands: CS.2, CS.8, CS.20 Ligand excluded by PLIP CS.15: 7 residues within 4Å: Chain C: T.54 Chain G: T.54 Chain K: T.54 Chain O: T.54 Ligands: CS.3, CS.9, CS.21 Ligand excluded by PLIP CS.17: 3 residues within 4Å: Ligands: CS.5, CS.11, CS.23 Ligand excluded by PLIP CS.19: 11 residues within 4Å: Chain C: T.54, V.55 Chain G: T.54, V.55 Chain K: T.54, V.55 Chain O: T.54, V.55 Ligands: CS.1, CS.7, CS.13 Ligand excluded by PLIP CS.20: 11 residues within 4Å: Chain C: G.56, Y.57 Chain G: G.56, Y.57 Chain K: G.56, Y.57 Chain O: G.56, Y.57 Ligands: CS.2, CS.8, CS.14 Ligand excluded by PLIP CS.21: 7 residues within 4Å: Chain C: T.54 Chain G: T.54 Chain K: T.54 Chain O: T.54 Ligands: CS.3, CS.9, CS.15 Ligand excluded by PLIP CS.23: 3 residues within 4Å: Ligands: CS.5, CS.11, CS.17 Ligand excluded by PLIP

4 x GOA: GLYCOLIC ACID(Covalent)

GOA.4: 6 residues within 4Å: Chain C: G.56, Y.57 Chain D: D.1, L.2, Y.3 Chain G: Y.57 1 PLIP interactions: 1 interactions with chain D Hydrogen bonds: D:D.1 GOA.10: 6 residues within 4Å: Chain G: G.56, Y.57 Chain H: D.1, L.2, Y.3 Chain O: Y.57 1 PLIP interactions: 1 interactions with chain H Hydrogen bonds: H:D.1 GOA.16: 6 residues within 4Å: Chain C: Y.57 Chain K: G.56, Y.57 Chain L: D.1, L.2, Y.3 1 PLIP interactions: 1 interactions with chain L Hydrogen bonds: L:D.1 GOA.22: 6 residues within 4Å: Chain K: Y.57 Chain O: G.56, Y.57 Chain P: D.1, L.2, Y.3 1 PLIP interactions: 1 interactions with chain P Hydrogen bonds: P:D.1

4 x B3H: (2S)-2-(BUTYRYLOXY)-3-HYDROXYPROPYL NONANOATE(Non-covalent)

B3H.6: 7 residues within 4Å: Chain D: L.7, R.10, L.11 Chain G: P.42, R.43, L.45, W.46 6 PLIP interactions: 4 interactions with chain D, 2 interactions with chain G Hydrophobic interactions: D:L.7, D:R.10, D:L.11, G:P.42, G:L.45 Salt bridges: D:R.10 B3H.12: 7 residues within 4Å: Chain H: L.7, R.10, L.11 Chain O: P.42, R.43, L.45, W.46 6 PLIP interactions: 4 interactions with chain H, 2 interactions with chain O Hydrophobic interactions: H:L.7, H:R.10, H:L.11, O:P.42, O:L.45 Salt bridges: H:R.10 B3H.18: 7 residues within 4Å: Chain C: P.42, R.43, L.45, W.46 Chain L: L.7, R.10, L.11 6 PLIP interactions: 2 interactions with chain C, 4 interactions with chain L Hydrophobic interactions: C:P.42, C:L.45, L:L.7, L:R.10, L:L.11 Salt bridges: L:R.10 B3H.24: 7 residues within 4Å: Chain K: P.42, R.43, L.45, W.46 Chain P: L.7, R.10, L.11 6 PLIP interactions: 4 interactions with chain P, 2 interactions with chain K Hydrophobic interactions: P:L.7, P:R.10, P:L.11, K:P.42, K:L.45 Salt bridges: P:R.10

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Valiyaveetil, F.I. et al., Structural and Functional Consequences of an Amide-to-Ester Substitution in the Selectivity Filter of a Potassium Channel. J.Am.Chem.Soc. (2006)

Release Date

2006-09-12

Peptides

FAB HEAVY CHAIN: AEIM
FAB LIGHT CHAIN: BFJN
KCSA CHANNEL: CGKO
KCSA CHANNEL: DHLP

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

E
A

I
A

M
A

B
B

F
B

J
B

N
B

C
C

G
C

K
C

O
C

D
D

H
D

L
D

P
D

Membrane

We predict this structure to be a membrane protein.
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FAB HEAVY CHAIN

FAB LIGHT CHAIN

KCSA CHANNEL

KCSA CHANNEL

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