SMTL ID : 2hg5.1

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

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 2.75 Å

Oligo State

hetero-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 F: T.54, V.55 Chain I: T.54, V.55 Chain L: T.54, V.55 Ligands: CS.6, CS.11, CS.16 Ligand excluded by PLIP CS.2: 11 residues within 4Å: Chain C: G.56, Y.57 Chain F: G.56, Y.57 Chain I: G.56, Y.57 Chain L: G.56, Y.57 Ligands: CS.7, CS.12, CS.17 Ligand excluded by PLIP CS.3: 7 residues within 4Å: Chain C: T.54 Chain F: T.54 Chain I: T.54 Chain L: T.54 Ligands: CS.8, CS.13, CS.18 Ligand excluded by PLIP CS.4: 3 residues within 4Å: Ligands: CS.9, CS.14, CS.19 Ligand excluded by PLIP CS.6: 11 residues within 4Å: Chain C: T.54, V.55 Chain F: T.54, V.55 Chain I: T.54, V.55 Chain L: T.54, V.55 Ligands: CS.1, CS.11, CS.16 Ligand excluded by PLIP CS.7: 11 residues within 4Å: Chain C: G.56, Y.57 Chain F: G.56, Y.57 Chain I: G.56, Y.57 Chain L: G.56, Y.57 Ligands: CS.2, CS.12, CS.17 Ligand excluded by PLIP CS.8: 7 residues within 4Å: Chain C: T.54 Chain F: T.54 Chain I: T.54 Chain L: T.54 Ligands: CS.3, CS.13, CS.18 Ligand excluded by PLIP CS.9: 3 residues within 4Å: Ligands: CS.4, CS.14, CS.19 Ligand excluded by PLIP CS.11: 11 residues within 4Å: Chain C: T.54, V.55 Chain F: T.54, V.55 Chain I: T.54, V.55 Chain L: T.54, V.55 Ligands: CS.1, CS.6, CS.16 Ligand excluded by PLIP CS.12: 11 residues within 4Å: Chain C: G.56, Y.57 Chain F: G.56, Y.57 Chain I: G.56, Y.57 Chain L: G.56, Y.57 Ligands: CS.2, CS.7, CS.17 Ligand excluded by PLIP CS.13: 7 residues within 4Å: Chain C: T.54 Chain F: T.54 Chain I: T.54 Chain L: T.54 Ligands: CS.3, CS.8, CS.18 Ligand excluded by PLIP CS.14: 3 residues within 4Å: Ligands: CS.4, CS.9, CS.19 Ligand excluded by PLIP CS.16: 11 residues within 4Å: Chain C: T.54, V.55 Chain F: T.54, V.55 Chain I: T.54, V.55 Chain L: T.54, V.55 Ligands: CS.1, CS.6, CS.11 Ligand excluded by PLIP CS.17: 11 residues within 4Å: Chain C: G.56, Y.57 Chain F: G.56, Y.57 Chain I: G.56, Y.57 Chain L: G.56, Y.57 Ligands: CS.2, CS.7, CS.12 Ligand excluded by PLIP CS.18: 7 residues within 4Å: Chain C: T.54 Chain F: T.54 Chain I: T.54 Chain L: T.54 Ligands: CS.3, CS.8, CS.13 Ligand excluded by PLIP CS.19: 3 residues within 4Å: Ligands: CS.4, CS.9, CS.14 Ligand excluded by PLIP

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

B3H.5: 7 residues within 4Å: Chain C: L.65, R.68, L.69 Chain I: P.42, R.43, L.45, W.46 6 PLIP interactions: 2 interactions with chain I, 4 interactions with chain C Hydrophobic interactions: I:P.42, I:L.45, C:L.65, C:R.68, C:L.69 Salt bridges: C:R.68 B3H.10: 7 residues within 4Å: Chain F: L.65, R.68, L.69 Chain L: P.42, R.43, L.45, W.46 6 PLIP interactions: 4 interactions with chain F, 2 interactions with chain L Hydrophobic interactions: F:L.65, F:R.68, F:L.69, L:P.42, L:L.45 Salt bridges: F:R.68 B3H.15: 7 residues within 4Å: Chain F: P.42, R.43, L.45, W.46 Chain I: L.65, R.68, L.69 6 PLIP interactions: 4 interactions with chain I, 2 interactions with chain F Hydrophobic interactions: I:L.65, I:R.68, I:L.69, F:P.42, F:L.45 Salt bridges: I:R.68 B3H.20: 7 residues within 4Å: Chain C: P.42, R.43, L.45, W.46 Chain L: L.65, R.68, L.69 6 PLIP interactions: 4 interactions with chain L, 2 interactions with chain C Hydrophobic interactions: L:L.65, L:R.68, L:L.69, C:P.42, C:L.45 Salt bridges: L:R.68

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: ADGJ
FAB LIGHT CHAIN: BEHK
KCSA CHANNEL: CFIL

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

D
A

G
A

J
A

B
B

E
B

H
B

K
B

C
C

F
C

I
C

L
C

Membrane

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

FAB LIGHT CHAIN

KCSA CHANNEL

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