SMTL ID : 1xl6.1

Intermediate gating structure 2 of the inwardly rectifying K+ channel KirBac3.1

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 2.85 Å

Oligo State

homo-tetramer

Ligands

14 x K: POTASSIUM ION(Non-functional Binders)(Non-covalent)

K.1: 1 residues within 4Å: Ligands: K.10 No protein-ligand interaction detected (PLIP) K.2: 1 residues within 4Å: Ligands: K.11 No protein-ligand interaction detected (PLIP) K.3: 11 residues within 4Å: Chain A: G.98, Y.99 Chain B: G.98, Y.99 Chain C: G.98, Y.99 Chain D: G.98, Y.99 Ligands: K.5, K.12, K.14 4 PLIP interactions: 1 interactions with chain A, 1 interactions with chain C, 2 Ligand-Water interactions Metal complexes: A:Y.99, C:Y.99, H2O.1, H2O.59 K.4: 11 residues within 4Å: Chain A: T.96 Chain B: T.96 Chain C: T.96 Chain D: T.96 Ligands: K.6, MG.7, K.8, K.13, K.15, MG.16, K.17 5 PLIP interactions: 2 interactions with chain A, 2 interactions with chain C, 1 interactions with chain D Metal complexes: A:T.96, A:T.96, C:T.96, C:T.96, D:T.96 K.5: 13 residues within 4Å: Chain A: I.97, G.98 Chain B: I.97, G.98 Chain C: I.97, G.98 Chain D: I.97, G.98 Ligands: K.3, K.8, K.12, K.14, K.17 5 PLIP interactions: 1 interactions with chain A, 1 interactions with chain C, 1 interactions with chain B, 2 Ligand-Water interactions Metal complexes: A:G.98, C:G.98, B:G.98, H2O.1, H2O.59 K.6: 15 residues within 4Å: Chain A: T.96, I.97 Chain B: T.96, I.97 Chain C: T.96, I.97 Chain D: T.96, I.97 Ligands: K.4, MG.7, K.8, K.13, K.15, MG.16, K.17 5 PLIP interactions: 1 interactions with chain B, 1 interactions with chain A, 1 interactions with chain C, 2 Ligand-Water interactions Metal complexes: B:T.96, A:T.96, C:T.96, H2O.2, H2O.60 K.8: 15 residues within 4Å: Chain A: T.96, I.97 Chain B: T.96, I.97 Chain C: T.96, I.97 Chain D: T.96, I.97 Ligands: K.4, K.5, K.6, K.13, K.14, K.15, K.17 5 PLIP interactions: 1 interactions with chain B, 1 interactions with chain C, 1 interactions with chain A, 2 Ligand-Water interactions Metal complexes: B:I.97, C:I.97, A:I.97, H2O.21, H2O.79 K.10: 1 residues within 4Å: Ligands: K.1 No protein-ligand interaction detected (PLIP) K.11: 1 residues within 4Å: Ligands: K.2 No protein-ligand interaction detected (PLIP) K.12: 11 residues within 4Å: Chain A: G.98, Y.99 Chain B: G.98, Y.99 Chain C: G.98, Y.99 Chain D: G.98, Y.99 Ligands: K.3, K.5, K.14 4 PLIP interactions: 1 interactions with chain A, 1 interactions with chain C, 2 Ligand-Water interactions Metal complexes: A:Y.99, C:Y.99, H2O.1, H2O.59 K.13: 11 residues within 4Å: Chain A: T.96 Chain B: T.96 Chain C: T.96 Chain D: T.96 Ligands: K.4, K.6, MG.7, K.8, K.15, MG.16, K.17 5 PLIP interactions: 2 interactions with chain A, 2 interactions with chain C, 1 interactions with chain D Metal complexes: A:T.96, A:T.96, C:T.96, C:T.96, D:T.96 K.14: 13 residues within 4Å: Chain A: I.97, G.98 Chain B: I.97, G.98 Chain C: I.97, G.98 Chain D: I.97, G.98 Ligands: K.3, K.5, K.8, K.12, K.17 5 PLIP interactions: 1 interactions with chain A, 1 interactions with chain C, 1 interactions with chain B, 2 Ligand-Water interactions Metal complexes: A:G.98, C:G.98, B:G.98, H2O.1, H2O.59 K.15: 15 residues within 4Å: Chain A: T.96, I.97 Chain B: T.96, I.97 Chain C: T.96, I.97 Chain D: T.96, I.97 Ligands: K.4, K.6, MG.7, K.8, K.13, MG.16, K.17 5 PLIP interactions: 1 interactions with chain B, 1 interactions with chain A, 1 interactions with chain C, 2 Ligand-Water interactions Metal complexes: B:T.96, A:T.96, C:T.96, H2O.2, H2O.60 K.17: 15 residues within 4Å: Chain A: T.96, I.97 Chain B: T.96, I.97 Chain C: T.96, I.97 Chain D: T.96, I.97 Ligands: K.4, K.5, K.6, K.8, K.13, K.14, K.15 5 PLIP interactions: 1 interactions with chain C, 1 interactions with chain B, 1 interactions with chain A, 2 Ligand-Water interactions Metal complexes: C:I.97, B:I.97, A:I.97, H2O.21, H2O.79

2 x MG: MAGNESIUM ION(Non-covalent)

MG.7: 9 residues within 4Å: Chain A: T.96 Chain B: T.96 Chain C: T.96 Chain D: T.96 Ligands: K.4, K.6, K.13, K.15, MG.16 5 PLIP interactions: 1 interactions with chain B, 1 interactions with chain A, 1 interactions with chain C, 1 interactions with chain D, 1 Ligand-Water interactions Metal complexes: B:T.96, A:T.96, C:T.96, D:T.96, H2O.2 MG.16: 9 residues within 4Å: Chain A: T.96 Chain B: T.96 Chain C: T.96 Chain D: T.96 Ligands: K.4, K.6, MG.7, K.13, K.15 5 PLIP interactions: 1 interactions with chain C, 1 interactions with chain A, 1 interactions with chain B, 1 interactions with chain D, 1 Ligand-Water interactions Metal complexes: C:T.96, A:T.96, B:T.96, D:T.96, H2O.2

2 x SPM: SPERMINE(Non-covalent)

SPM.9: 9 residues within 4Å: Chain A: A.128, Y.132 Chain B: A.128, Y.132, Q.252 Chain C: A.128, Y.132 Chain D: Y.132 Ligands: SPM.18 5 PLIP interactions: 2 interactions with chain B, 1 interactions with chain A, 1 interactions with chain C, 1 interactions with chain D Hydrogen bonds: B:Y.132, B:Q.252, D:Y.132 Hydrophobic interactions: A:A.128, C:Y.132 SPM.18: 9 residues within 4Å: Chain A: A.128, Y.132 Chain B: Y.132 Chain C: A.128, Y.132 Chain D: A.128, Y.132, Q.252 Ligands: SPM.9 5 PLIP interactions: 1 interactions with chain B, 1 interactions with chain A, 1 interactions with chain C, 2 interactions with chain D Hydrogen bonds: B:Y.132, D:Y.132, D:Q.252 Hydrophobic interactions: A:Y.132, C:A.128

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Gulbis, J.M. et al., Two intermediate gating state crystal structures of the KirBac3.1 K+ channel. To be Published

Release Date

2004-12-07

Peptides

Inward rectifier potassium channel: ABCD

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

C
A

D
B

Membrane

We predict this structure to be a membrane protein.
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Inward rectifier potassium channel

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