SMTL ID : 4j9z.1

Calcium-calmodulin complexed with the calmodulin binding domain from a small conductance potassium channel splice variant and NS309

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 1.66 Å

Oligo State

hetero-2-2-mer

Ligands

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

SO4.1: 5 residues within 4Å: Chain A: R.36, K.58, H.59, K.62 Chain D: E.115 5 PLIP interactions: 5 interactions with chain A Water bridges: A:R.36 Salt bridges: A:R.36, A:K.58, A:H.59, A:K.62 SO4.2: 1 residues within 4Å: Chain A: R.57 2 PLIP interactions: 2 interactions with chain A Water bridges: A:K.58 Salt bridges: A:R.57 SO4.6: 3 residues within 4Å: Chain A: K.9 Chain B: D.79, T.80 5 PLIP interactions: 4 interactions with chain B, 1 interactions with chain A Hydrogen bonds: B:T.80, B:T.80 Water bridges: B:D.81, B:D.81 Salt bridges: A:K.9 SO4.7: 1 residues within 4Å: Chain B: K.31 1 PLIP interactions: 1 interactions with chain B Salt bridges: B:K.31 SO4.9: 5 residues within 4Å: Chain B: E.115 Chain C: R.36, K.58, H.59, K.62 5 PLIP interactions: 5 interactions with chain C Water bridges: C:R.36 Salt bridges: C:R.36, C:K.58, C:H.59, C:K.62 SO4.10: 1 residues within 4Å: Chain C: R.57 2 PLIP interactions: 2 interactions with chain C Water bridges: C:K.58 Salt bridges: C:R.57 SO4.14: 3 residues within 4Å: Chain C: K.9 Chain D: D.79, T.80 4 PLIP interactions: 1 interactions with chain C, 3 interactions with chain D Salt bridges: C:K.9 Hydrogen bonds: D:T.80, D:T.80 Water bridges: D:D.81 SO4.15: 1 residues within 4Å: Chain D: K.31 1 PLIP interactions: 1 interactions with chain D Salt bridges: D:K.31

2 x 1KP: (3E)-6,7-dichloro-3-(hydroxyimino)-1,3-dihydro-2H-indol-2-one(Non-covalent)

1KP.3: 14 residues within 4Å: Chain A: F.17, A.84, L.87, V.88 Chain B: F.20, I.28, L.33, M.52, E.55, I.64, F.69, M.72, M.73, K.76 5 PLIP interactions: 1 interactions with chain A, 4 interactions with chain B Hydrophobic interactions: A:L.87, B:F.69 Hydrogen bonds: B:M.52, B:K.76, B:K.76 1KP.11: 14 residues within 4Å: Chain C: F.17, A.84, L.87, V.88 Chain D: F.20, I.28, L.33, M.52, E.55, I.64, F.69, M.72, M.73, K.76 5 PLIP interactions: 4 interactions with chain D, 1 interactions with chain C Hydrophobic interactions: D:F.69, C:L.87 Hydrogen bonds: D:M.52, D:K.76, D:K.76

4 x CA: CALCIUM ION(Non-covalent)

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:D.25, B:E.32, B:E.32, H2O.3 CA.5: 7 residues within 4Å: Chain B: D.57, A.58, D.59, G.60, N.61, T.63, E.68 5 PLIP interactions: 4 interactions with chain B, 1 Ligand-Water interactions Metal complexes: B:D.57, B:D.59, B:E.68, B:E.68, H2O.3 CA.12: 5 residues within 4Å: Chain D: D.21, D.23, D.25, T.27, E.32 5 PLIP interactions: 4 interactions with chain D, 1 Ligand-Water interactions Metal complexes: D:D.21, D:D.25, D:E.32, D:E.32, H2O.9 CA.13: 7 residues within 4Å: Chain D: D.57, A.58, D.59, G.60, N.61, T.63, E.68 5 PLIP interactions: 4 interactions with chain D, 1 Ligand-Water interactions Metal complexes: D:D.57, D:D.59, D:E.68, D:E.68, H2O.9

2 x GOL: GLYCEROL(Non-functional Binders)

GOL.8: 5 residues within 4Å: Chain B: K.95, Y.100, I.101, S.102, E.105 6 PLIP interactions: 6 interactions with chain B Hydrogen bonds: B:Y.100, B:S.102, B:S.102 Water bridges: B:D.96, B:Y.100, B:Q.136 GOL.16: 5 residues within 4Å: Chain D: K.95, Y.100, I.101, S.102, E.105 6 PLIP interactions: 6 interactions with chain D Hydrogen bonds: D:Y.100, D:S.102, D:S.102 Water bridges: D:K.95, D:Y.100, D:Q.136

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Zhang, M. et al., Unstructured to structured transition of an intrinsically disordered protein peptide in coupling Ca2+-sensing and SK channel activation. Proc.Natl.Acad.Sci.USA (2013)

Release Date

2013-03-27

Peptides

Small conductance calcium-activated potassium channel protein 2: AC
Calmodulin: BD

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
B

C
B

B
R

D
R

Small conductance calcium-activated potassium channel protein 2

Calmodulin

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