SMTL ID : 5wbx.1 (1 other biounit)

Structural insights into the potency of SK/IK channel positive modulators

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 1.90 Å

Oligo State

hetero-1-1-mer

Ligands

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

SO4.1: 1 residues within 4Å: Chain A: R.56 2 PLIP interactions: 2 interactions with chain A Water bridges: A:A.53 Salt bridges: A:R.56 SO4.2: 1 residues within 4Å: Chain A: H.52 1 PLIP interactions: 1 interactions with chain A Salt bridges: A:H.52 SO4.3: 5 residues within 4Å: Chain A: R.35, K.57, H.58, K.61 Ligands: SO4.4 7 PLIP interactions: 7 interactions with chain A Water bridges: A:R.35, A:K.57, A:H.58 Salt bridges: A:R.35, A:K.57, A:H.58, A:K.61 SO4.4: 4 residues within 4Å: Chain A: K.57, R.60, K.61 Ligands: SO4.3 2 PLIP interactions: 2 interactions with chain A Salt bridges: A:R.60, A:K.61

2 x GOL: GLYCEROL(Non-functional Binders)

GOL.5: 0 residues within 4Å: (No contacts) No protein-ligand interaction detected (PLIP) GOL.9: 4 residues within 4Å: Chain B: K.93, I.99, S.100, E.103 9 PLIP interactions: 9 interactions with chain B Hydrogen bonds: B:S.100, B:S.100 Water bridges: B:K.93, B:K.93, B:N.96, B:Y.98, B:Y.98, B:Q.134, B:Q.134

2 x CA: CALCIUM ION(Non-covalent)

CA.6: 5 residues within 4Å: Chain B: D.19, D.21, D.23, T.25, E.30 5 PLIP interactions: 4 interactions with chain B, 1 Ligand-Water interactions Metal complexes: B:D.19, B:T.25, B:E.30, B:E.30, H2O.6 CA.7: 5 residues within 4Å: Chain B: D.55, D.57, N.59, T.61, E.66 5 PLIP interactions: 3 interactions with chain B, 2 Ligand-Water interactions Metal complexes: B:D.55, B:D.57, B:T.61, H2O.5, H2O.6

1 x AJY: (3Z)-6-bromo-3-(hydroxyimino)-5-methyl-1,3-dihydro-2H-indol-2-one(Non-covalent)

AJY.8: 14 residues within 4Å: Chain A: F.16, A.83, L.86, V.87 Chain B: I.26, L.31, M.50, E.53, V.54, I.62, F.67, M.70, M.71, K.74 9 PLIP interactions: 6 interactions with chain B, 3 interactions with chain A Hydrophobic interactions: B:V.54, B:I.62, B:F.67, A:L.86, A:L.86, A:V.87 Hydrogen bonds: B:M.50, B:K.74 Water bridges: B:K.74

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Nam, Y.W. et al., Structural insights into the potency of SK channel positive modulators. Sci Rep (2017)

Release Date

2017-12-20

Peptides

Small conductance calcium-activated potassium channel protein 2: A
Calmodulin-1: B

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
B

B
R

Small conductance calcium-activated potassium channel protein 2

Calmodulin-1

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