SMTL ID : 5bkk.1

bbTBA-bound closed MthK channel in nanodisc

Coordinates

PDB Format

Method

ELECTRON MICROSCOPY

Oligo State

homo-octamer

Ligands

2 x PGW: (1R)-2-{[(S)-{[(2S)-2,3-dihydroxypropyl]oxy}(hydroxy)phosphoryl]oxy}-1-[(hexadecanoyloxy)methyl]ethyl (9Z)-octadec-9-enoate(Non-covalent)

PGW.1: 10 residues within 4Å: Chain A: A.90, V.91, L.94, F.97 Chain C: V.81, I.84, G.85, A.88, V.89, E.92 5 PLIP interactions: 2 interactions with chain C, 3 interactions with chain A Hydrophobic interactions: C:I.84, C:A.88, A:V.91, A:L.94, A:L.94 PGW.5: 6 residues within 4Å: Chain A: F.87, A.88 Chain G: A.20, F.87, R.93, L.94 5 PLIP interactions: 3 interactions with chain G, 2 interactions with chain A Hydrophobic interactions: G:F.87, G:R.93, G:L.94, A:F.87, A:A.88

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

K.2: 6 residues within 4Å: Chain A: T.59 Chain C: T.59 Chain E: T.59 Chain G: T.59 Ligands: YQ4.3, K.6 4 PLIP interactions: 1 interactions with chain C, 1 interactions with chain A, 1 interactions with chain E, 1 interactions with chain G Metal complexes: C:T.59, A:T.59, E:T.59, G:T.59 K.4: 0 residues within 4Å: (No contacts) No protein-ligand interaction detected (PLIP) K.6: 10 residues within 4Å: Chain A: T.59, V.60 Chain C: T.59, V.60 Chain E: T.59, V.60 Chain G: T.59, V.60, G.61 Ligands: K.2 4 PLIP interactions: 1 interactions with chain C, 1 interactions with chain G, 1 interactions with chain A, 1 interactions with chain E Metal complexes: C:V.60, G:V.60, A:V.60, E:V.60

1 x YQ4: (~{R})-phenyl-[4-[(tributyl-$l^{4}-azanyl)methyl]phenyl]methanol(Non-covalent)

YQ4.3: 15 residues within 4Å: Chain A: I.57, A.58, T.59, I.84, T.86, F.87, A.90 Chain C: T.59, I.84 Chain E: T.59 Chain G: A.58, T.59, I.84, F.87 Ligands: K.2 13 PLIP interactions: 9 interactions with chain A, 3 interactions with chain G, 1 interactions with chain C Hydrophobic interactions: A:I.57, A:T.59, A:I.84, A:T.86, A:F.87, A:F.87, A:A.90, G:T.59, G:I.84, G:F.87, C:I.84 pi-Stacking: A:F.87 pi-Cation interactions: A:F.87

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Fan, C. et al., Calcium-gated potassium channel blockade via membrane-facing fenestrations. Nat.Chem.Biol. (2023)

Release Date

2022-09-21

Peptides

Calcium-gated potassium channel MthK: ABCDEFGH

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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Calcium-gated potassium channel MthK

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