SMTL ID : 5v03.1

A positive allosteric modulator binding pocket in SK2 ion channels is shared by Riluzole and CyPPA

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 1.58 Å

Oligo State

hetero-1-1-mer

Ligands

1 x SO4: SULFATE ION(Non-functional Binders)

SO4.1: 4 residues within 4Å: Chain A: R.36, K.58, H.59, K.62 4 PLIP interactions: 4 interactions with chain A Salt bridges: A:R.36, A:K.58, A:H.59, A:K.62

1 x 658: N-(4-chlorophenyl)-2-(3,5-dimethyl-1H-pyrazol-1-yl)pyrimidin-4-amine(Non-covalent)

658.2: 17 residues within 4Å: Chain A: Q.77, L.80, N.81, A.84, L.87, V.88 Chain B: F.20, L.33, D.51, M.52, I.53, E.55, V.56, I.64, F.69, M.72, K.76 6 PLIP interactions: 3 interactions with chain A, 3 interactions with chain B Hydrophobic interactions: A:A.84, A:L.87, A:L.87, B:I.64 Hydrogen bonds: B:M.52, B:E.55

2 x CA: CALCIUM ION(Non-covalent)

CA.3: 5 residues within 4Å: Chain B: D.57, D.59, N.61, T.63, E.68 4 PLIP interactions: 4 interactions with chain B Metal complexes: B:D.57, B:D.59, B:T.63, B:E.68 CA.4: 5 residues within 4Å: Chain B: D.21, D.23, D.25, T.27, E.32 5 PLIP interactions: 4 interactions with chain B, 1 Ligand-Water interactions Metal complexes: B:D.21, B:T.27, B:E.32, B:E.32, H2O.5

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Cho, L.T. et al., An Intracellular Allosteric Modulator Binding Pocket in SK2 Ion Channels Is Shared by Multiple Chemotypes. Structure (2018)

Release Date

2018-03-07

Peptides

Small conductance calcium-activated potassium channel protein 2: A
Calmodulin: B

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
B

B
R

Small conductance calcium-activated potassium channel protein 2

Calmodulin

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