SMTL ID : 7xnk.1

human KCNQ1-CaM in complex with ML277

Coordinates

PDB Format Compare

Method

ELECTRON MICROSCOPY

Oligo State

hetero-4-4-mer

Ligands

4 x K: POTASSIUM ION(Non-covalent)

K.1: 9 residues within 4Å: Chain A: G.314, Y.315 Chain C: G.314, Y.315 Chain E: G.314, Y.315 Chain G: G.314, Y.315 Ligands: K.2 4 PLIP interactions: 1 interactions with chain C, 2 interactions with chain A, 1 interactions with chain E Metal complexes: C:G.314, A:G.314, A:Y.315, E:G.314 K.2: 10 residues within 4Å: Chain A: I.313, G.314 Chain C: I.313, G.314 Chain E: I.313, G.314 Chain G: I.313, G.314 Ligands: K.1, K.3 5 PLIP interactions: 1 interactions with chain C, 2 interactions with chain G, 1 interactions with chain E, 1 interactions with chain A Metal complexes: C:G.314, G:I.313, G:G.314, E:I.313, A:G.314 K.3: 10 residues within 4Å: Chain A: T.312, I.313 Chain C: T.312, I.313 Chain E: T.312, I.313 Chain G: T.312, I.313 Ligands: K.2, K.4 5 PLIP interactions: 2 interactions with chain E, 2 interactions with chain A, 1 interactions with chain G Metal complexes: E:T.312, E:I.313, A:T.312, A:I.313, G:T.312 K.4: 5 residues within 4Å: Chain A: T.312 Chain C: T.312 Chain E: T.312 Chain G: T.312 Ligands: K.3 4 PLIP interactions: 1 interactions with chain E, 1 interactions with chain A, 1 interactions with chain G, 1 interactions with chain C Metal complexes: E:T.312, A:T.312, G:T.312, C:T.312

4 x I0S: (2R)-N-[4-(4-methoxyphenyl)-1,3-thiazol-2-yl]-1-(4-methylbenzene-1-sulfonyl)piperidine-2-carboxamide(Non-covalent)

I0S.5: 20 residues within 4Å: Chain A: I.268, L.271, G.272, F.275, F.332, V.334, F.335, A.336, S.338, F.339 Chain G: W.248, L.251, V.255, L.262, T.265, L.266, F.339, F.340, P.343, L.347 5 PLIP interactions: 2 interactions with chain G, 3 interactions with chain A Hydrophobic interactions: G:L.262, G:L.262, A:F.275, A:F.335 Hydrogen bonds: A:F.335 I0S.6: 20 residues within 4Å: Chain A: W.248, L.251, V.255, L.262, T.265, L.266, F.339, F.340, P.343, L.347 Chain C: I.268, L.271, G.272, F.275, F.332, V.334, F.335, A.336, S.338, F.339 6 PLIP interactions: 4 interactions with chain C, 2 interactions with chain A Hydrophobic interactions: C:I.268, C:F.275, C:F.335, A:L.262, A:L.262 Hydrogen bonds: C:F.335 I0S.7: 20 residues within 4Å: Chain C: W.248, L.251, V.255, L.262, T.265, L.266, F.339, F.340, P.343, L.347 Chain E: I.268, L.271, G.272, F.275, F.332, V.334, F.335, A.336, S.338, F.339 5 PLIP interactions: 3 interactions with chain E, 2 interactions with chain C Hydrophobic interactions: E:F.275, E:F.335, C:L.262, C:L.262 Hydrogen bonds: E:F.335 I0S.8: 20 residues within 4Å: Chain E: W.248, L.251, V.255, L.262, T.265, L.266, F.339, F.340, P.343, L.347 Chain G: I.268, L.271, G.272, F.275, F.332, V.334, F.335, A.336, S.338, F.339 5 PLIP interactions: 2 interactions with chain E, 3 interactions with chain G Hydrophobic interactions: E:L.262, E:L.262, G:F.275, G:F.335 Hydrogen bonds: G:F.335

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Ma, D. et al., Structural mechanisms for the activation of human cardiac KCNQ1 channel by electro-mechanical coupling enhancers. Proc.Natl.Acad.Sci.USA (2022)

Release Date

2022-12-14

Peptides

Potassium voltage-gated channel subfamily KQT member 1: ACEG
Calmodulin-3: BDFH

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

C
C

E
E

G
G

B
B

D
D

F
F

H
H

Membrane

We predict this structure to be a membrane protein.
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Potassium voltage-gated channel subfamily KQT member 1

Calmodulin-3

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