SMTL ID : 7byn.1

Cryo-EM structure of human KCNQ4 with linopirdine

Coordinates

PDB Format Compare

Method

ELECTRON MICROSCOPY

Oligo State

hetero-4-4-mer

Ligands

4 x PT5: [(2R)-1-octadecanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phospho ryl]oxy-propan-2-yl] (8Z)-icosa-5,8,11,14-tetraenoate(Non-covalent)

PT5.1: 11 residues within 4Å: Chain A: L.375, E.376, P.378, F.383, H.386, V.387, R.434, F.458, R.500, M.501, R.503 13 PLIP interactions: 13 interactions with chain A Hydrophobic interactions: A:V.387, A:R.503 Hydrogen bonds: A:E.376, A:E.376, A:R.434, A:R.434, A:R.500, A:R.503, A:R.503 Salt bridges: A:H.386, A:H.386, A:R.434, A:R.503 PT5.5: 10 residues within 4Å: Chain B: E.376, P.378, F.383, H.386, V.387, R.434, F.458, R.500, M.501, R.503 10 PLIP interactions: 10 interactions with chain B Hydrophobic interactions: B:V.387 Hydrogen bonds: B:E.376, B:R.500, B:M.501, B:R.503, B:R.503 Salt bridges: B:H.386, B:R.434, B:R.500, B:R.503 PT5.7: 11 residues within 4Å: Chain C: L.375, E.376, P.378, F.383, H.386, V.387, R.434, F.458, R.500, M.501, R.503 10 PLIP interactions: 10 interactions with chain C Hydrophobic interactions: C:V.387, C:R.503 Hydrogen bonds: C:E.376, C:R.500, C:M.501, C:R.503 Salt bridges: C:H.386, C:R.434, C:R.500, C:R.503 PT5.8: 12 residues within 4Å: Chain A: I.523 Chain D: L.375, E.376, P.378, F.383, H.386, V.387, R.434, F.458, R.500, M.501, R.503 9 PLIP interactions: 8 interactions with chain D, 1 interactions with chain A Hydrophobic interactions: D:V.387, A:I.523 Hydrogen bonds: D:E.376, D:R.500, D:M.501, D:R.503 Salt bridges: D:H.386, D:R.434, D:R.500

3 x K: POTASSIUM ION(Non-covalent)

K.2: 9 residues within 4Å: Chain A: T.567, I.568 Chain B: T.567, I.568 Chain C: T.567, I.568 Chain D: T.567, I.568 Ligands: K.4 5 PLIP interactions: 2 interactions with chain C, 2 interactions with chain A, 1 interactions with chain B Metal complexes: C:T.567, C:I.568, A:T.567, A:I.568, B:T.567 K.3: 8 residues within 4Å: Chain A: G.569, Y.570 Chain B: G.569, Y.570 Chain C: G.569, Y.570 Chain D: G.569, Y.570 4 PLIP interactions: 2 interactions with chain C, 1 interactions with chain A, 1 interactions with chain B Metal complexes: C:G.569, C:Y.570, A:Y.570, B:Y.570 K.4: 5 residues within 4Å: Chain A: T.567 Chain B: T.567 Chain C: T.567 Chain D: T.567 Ligands: K.2 1 PLIP interactions: 1 interactions with chain B Metal complexes: B:T.567

1 x FCC: 1-phenyl-3,3-bis(pyridin-4-ylmethyl)indol-2-one(Non-covalent)

FCC.6: 4 residues within 4Å: Chain B: R.615 Chain C: R.615, V.842 Chain D: R.615 5 PLIP interactions: 1 interactions with chain C, 2 interactions with chain D, 2 interactions with chain B Hydrophobic interactions: C:V.842 Hydrogen bonds: D:R.615, B:R.615 pi-Cation interactions: D:R.615, B:R.615

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Li, T. et al., Structural Basis for the Modulation of Human KCNQ4 by Small-Molecule Drugs. Mol.Cell (2021)

Release Date

2020-12-02

Peptides

Green fluorescent protein,Potassium voltage-gated channel subfamily KQT member 4: ABCD
Calmodulin-3: EFGH

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
C

C
E

D
G

E
B

F
D

G
F

H
H

Membrane

We predict this structure to be a membrane protein.
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Green fluorescent protein,Potassium voltage-gated channel subfamily KQT member 4

Calmodulin-3

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