SMTL ID : 6v01.1

structure of human KCNQ1-KCNE3-CaM complex with PIP2

Coordinates

PDB Format

Method

ELECTRON MICROSCOPY

Oligo State

hetero-4-4-4-mer

Ligands

8 x CA: CALCIUM ION(Non-covalent)

CA.1: 2 residues within 4Å: Chain A: T.27, T.63 No protein-ligand interaction detected (PLIP) CA.2: 5 residues within 4Å: Chain A: D.59, G.60, N.61, G.62, I.64 No protein-ligand interaction detected (PLIP) CA.3: 2 residues within 4Å: Chain C: T.27, T.63 No protein-ligand interaction detected (PLIP) CA.4: 5 residues within 4Å: Chain C: D.59, G.60, N.61, G.62, I.64 No protein-ligand interaction detected (PLIP) CA.5: 2 residues within 4Å: Chain E: T.27, T.63 No protein-ligand interaction detected (PLIP) CA.6: 5 residues within 4Å: Chain E: D.59, G.60, N.61, G.62, I.64 No protein-ligand interaction detected (PLIP) CA.7: 2 residues within 4Å: Chain G: T.27, T.63 No protein-ligand interaction detected (PLIP) CA.8: 5 residues within 4Å: Chain G: D.59, G.60, N.61, G.62, I.64 No protein-ligand interaction detected (PLIP)

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)

PT5.9: 13 residues within 4Å: Chain H: K.87 Chain I: Y.37, R.42, R.107, K.109, R.121, K.122, P.123, I.127, L.165, Q.170, G.171, W.174 11 PLIP interactions: 11 interactions with chain I Hydrophobic interactions: I:I.127, I:W.174 Hydrogen bonds: I:Y.37, I:R.107, I:Q.170 Salt bridges: I:R.42, I:R.107, I:R.107, I:R.121, I:K.122, I:R.175 PT5.10: 13 residues within 4Å: Chain B: K.87 Chain J: Y.37, R.42, R.107, K.109, R.121, K.122, P.123, I.127, L.165, Q.170, G.171, W.174 11 PLIP interactions: 11 interactions with chain J Hydrophobic interactions: J:P.123, J:I.127, J:W.174 Hydrogen bonds: J:Y.37, J:Q.170 Salt bridges: J:R.42, J:R.107, J:R.107, J:R.121, J:K.122, J:R.175 PT5.11: 13 residues within 4Å: Chain D: K.87 Chain K: Y.37, R.42, R.107, K.109, R.121, K.122, P.123, I.127, L.165, Q.170, G.171, W.174 11 PLIP interactions: 11 interactions with chain K Hydrophobic interactions: K:P.123, K:I.127, K:W.174 Hydrogen bonds: K:Y.37, K:Q.170 Salt bridges: K:R.42, K:R.107, K:R.107, K:R.121, K:K.122, K:R.175 PT5.12: 13 residues within 4Å: Chain F: K.87 Chain L: Y.37, R.42, R.107, K.109, R.121, K.122, P.123, I.127, L.165, Q.170, G.171, W.174 11 PLIP interactions: 11 interactions with chain L Hydrophobic interactions: L:P.123, L:I.127, L:W.174 Hydrogen bonds: L:Y.37, L:Q.170 Salt bridges: L:R.42, L:R.107, L:R.107, L:R.121, L:K.122, L:R.175

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Sun, J. et al., Structural Basis of Human KCNQ1 Modulation and Gating. Cell (2020)

Release Date

2019-12-04

Peptides

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

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
B

C
E

E
H

G
K

B
C

D
F

F
I

H
L

I
J

J
A

K
D

L
G

Membrane

We predict this structure to be a membrane protein.
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Calmodulin-1

Potassium voltage-gated channel subfamily E member 3

Potassium voltage-gated channel subfamily KQT member 1

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