SMTL ID : 9czh.1

Ca2+ bound intermediate state of hSlo1 + beta2N-beta4 channel in detergent.

Coordinates

PDB Format Compare

Method

ELECTRON MICROSCOPY

Oligo State

hetero-4-4-mer

Ligands

8 x CA: CALCIUM ION(Non-covalent)

CA.1: 6 residues within 4Å: Chain A: N.509, S.512, R.514, V.532, N.534, E.535 5 PLIP interactions: 5 interactions with chain A Metal complexes: A:N.509, A:S.512, A:V.532, A:N.534, A:E.535 CA.2: 5 residues within 4Å: Chain A: Q.889, D.892, D.895, D.897 Chain D: N.449 5 PLIP interactions: 5 interactions with chain A Metal complexes: A:Q.889, A:D.892, A:D.895, A:D.897, A:D.897 CA.10: 6 residues within 4Å: Chain B: N.509, S.512, R.514, V.532, N.534, E.535 5 PLIP interactions: 5 interactions with chain B Metal complexes: B:N.509, B:S.512, B:V.532, B:N.534, B:E.535 CA.11: 5 residues within 4Å: Chain A: N.449 Chain B: Q.889, D.892, D.895, D.897 5 PLIP interactions: 5 interactions with chain B Metal complexes: B:Q.889, B:D.892, B:D.895, B:D.897, B:D.897 CA.14: 6 residues within 4Å: Chain C: N.509, S.512, R.514, V.532, N.534, E.535 5 PLIP interactions: 5 interactions with chain C Metal complexes: C:N.509, C:S.512, C:V.532, C:N.534, C:E.535 CA.15: 5 residues within 4Å: Chain B: N.449 Chain C: Q.889, D.892, D.895, D.897 5 PLIP interactions: 5 interactions with chain C Metal complexes: C:Q.889, C:D.892, C:D.895, C:D.897, C:D.897 CA.19: 6 residues within 4Å: Chain D: N.509, S.512, R.514, V.532, N.534, E.535 5 PLIP interactions: 5 interactions with chain D Metal complexes: D:N.509, D:S.512, D:V.532, D:N.534, D:E.535 CA.20: 5 residues within 4Å: Chain C: N.449 Chain D: Q.889, D.892, D.895, D.897 5 PLIP interactions: 5 interactions with chain D Metal complexes: D:Q.889, D:D.892, D:D.895, D:D.897, D:D.897

4 x K: POTASSIUM ION(Non-covalent)

K.3: 8 residues within 4Å: Chain A: G.289, Y.290 Chain B: G.289, Y.290 Chain C: G.289, Y.290 Chain D: G.289, Y.290 4 PLIP interactions: 1 interactions with chain A, 1 interactions with chain C, 1 interactions with chain B, 1 interactions with chain D Metal complexes: A:Y.290, C:Y.290, B:Y.290, D:Y.290 K.4: 9 residues within 4Å: Chain A: V.288, G.289 Chain B: V.288, G.289 Chain C: V.288, G.289 Chain D: V.288, G.289 Ligands: K.5 5 PLIP interactions: 1 interactions with chain C, 1 interactions with chain A, 1 interactions with chain B, 2 interactions with chain D Metal complexes: C:G.289, A:G.289, B:G.289, D:V.288, D:G.289 K.5: 10 residues within 4Å: Chain A: T.287, V.288 Chain B: T.287, V.288 Chain C: T.287, V.288 Chain D: T.287, V.288 Ligands: K.4, K.6 5 PLIP interactions: 1 interactions with chain B, 2 interactions with chain D, 1 interactions with chain C, 1 interactions with chain A Metal complexes: B:T.287, D:T.287, D:V.288, C:T.287, A:T.287 K.6: 5 residues within 4Å: Chain A: T.287 Chain B: T.287 Chain C: T.287 Chain D: T.287 Ligands: K.5 4 PLIP interactions: 1 interactions with chain B, 1 interactions with chain D, 1 interactions with chain C, 1 interactions with chain A Metal complexes: B:T.287, D:T.287, C:T.287, A:T.287

10 x POV: (2S)-3-(hexadecanoyloxy)-2-[(9Z)-octadec-9-enoyloxy]propyl 2-(trimethylammonio)ethyl phosphate(Non-covalent)(Covalent)

POV.7: 11 residues within 4Å: Chain A: T.273, W.275, E.276, V.278, Y.279 Chain D: E.264, T.298, R.301, L.302 Chain H: I.63, C.67 11 PLIP interactions: 1 interactions with chain H, 7 interactions with chain A, 3 interactions with chain D Hydrophobic interactions: H:I.63, A:W.275, A:W.275, A:W.275, A:W.275, A:E.276, A:Y.279, D:R.301, D:L.302 Salt bridges: A:E.276 Hydrogen bonds: D:R.301 POV.8: 8 residues within 4Å: Chain A: R.20, W.22, S.259, F.266, L.299 Chain E: S.60, V.198, H.201 9 PLIP interactions: 8 interactions with chain A, 1 interactions with chain E Hydrophobic interactions: A:W.22, A:W.22, A:W.22, A:L.299, E:V.198 Hydrogen bonds: A:R.20, A:R.20 Salt bridges: A:R.20, A:R.20 POV.9: 5 residues within 4Å: Chain A: L.212, T.245, F.252, F.306, F.307 3 PLIP interactions: 3 interactions with chain A Hydrophobic interactions: A:F.252, A:F.306, A:F.307 POV.12: 12 residues within 4Å: Chain A: E.264, T.298, R.301, L.302, V.305 Chain B: W.246, T.273, W.275, E.276, V.278 Chain E: I.63, C.67 11 PLIP interactions: 5 interactions with chain A, 5 interactions with chain B, 1 interactions with chain E Hydrophobic interactions: A:T.298, A:R.301, A:L.302, A:V.305, B:W.246, B:W.275, B:W.275, B:W.275, B:V.278, E:I.63 Salt bridges: A:R.301 POV.13: 11 residues within 4Å: Chain B: Q.19, R.20, W.22, S.259, F.266 Chain F: S.56, S.60, D.195, I.197, V.198, H.201 7 PLIP interactions: 6 interactions with chain B, 1 interactions with chain F Hydrophobic interactions: B:W.22, B:W.22, B:F.266, B:F.266, F:V.198 Hydrogen bonds: B:Q.19 Salt bridges: B:R.20 POV.16: 13 residues within 4Å: Chain B: E.264, T.298, R.301, L.302 Chain C: W.246, T.273, W.275, E.276, V.278, Y.279 Chain F: I.63, F.66, C.67 12 PLIP interactions: 6 interactions with chain C, 4 interactions with chain B, 2 interactions with chain F Hydrophobic interactions: C:W.246, C:W.275, C:W.275, C:W.275, C:W.275, C:Y.279, B:T.298, B:R.301, F:I.63, F:F.66 Salt bridges: B:E.264, B:R.301 POV.17: 8 residues within 4Å: Chain C: Q.19, R.20, W.22, S.259, F.266 Chain G: S.60, H.201, C.202 5 PLIP interactions: 4 interactions with chain C, 1 interactions with chain G Hydrophobic interactions: C:W.22, C:F.266 Hydrogen bonds: C:Q.19 Salt bridges: C:R.20, G:H.201 POV.18: 11 residues within 4Å: Chain D: T.245, W.246, A.249, L.281, M.282, M.285, F.306, F.307, G.310, G.311, F.315 4 PLIP interactions: 4 interactions with chain D Hydrophobic interactions: D:W.246, D:W.246, D:L.281, D:M.285 POV.21: 13 residues within 4Å: Chain C: E.264, T.298, R.301, L.302 Chain D: W.246, T.273, W.275, E.276, V.278, Y.279 Chain G: I.63, F.66, C.67 9 PLIP interactions: 2 interactions with chain G, 5 interactions with chain D, 2 interactions with chain C Hydrophobic interactions: G:I.63, G:F.66, D:W.246, D:W.275, D:W.275, D:V.278, D:Y.279, C:R.301 Hydrogen bonds: C:E.264 POV.22: 7 residues within 4Å: Chain D: R.20, W.22, S.259, F.266 Chain H: F.64, V.198, H.201 5 PLIP interactions: 3 interactions with chain D, 2 interactions with chain H Hydrophobic interactions: D:W.22, D:F.266, H:F.64, H:V.198 Salt bridges: D:R.20

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Agarwal, S. et al., Ball-and-chain inactivation of a human large conductance calcium-activated potassium channel. Nat Commun (2025)

Release Date

2025-03-05

Peptides

Isoform 5 of Calcium-activated potassium channel subunit alpha-1: ABCD
Large-conductance Ca2+-activated K+ channel beta2 subunit,Calcium-activated potassium channel subunit beta-4: EFGH

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

C
C

D
D

E
E

F
F

G
G

H
H

Membrane

We predict this structure to be a membrane protein.
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Isoform 5 of Calcium-activated potassium channel subunit alpha-1

Large-conductance Ca2+-activated K+ channel beta2 subunit,Calcium-activated potassium channel subunit beta-4

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