SMTL ID : 4j9y.1

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

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 1.51 Å

Oligo State

hetero-oligomer

Ligands

6 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 SO4.5: 4 residues within 4Å: Chain A: K.9 Chain B: K.78, D.79, T.80 7 PLIP interactions: 1 interactions with chain A, 6 interactions with chain B Salt bridges: A:K.9, B:K.78 Hydrogen bonds: B:T.80 Water bridges: B:K.78, B:K.78, B:D.81, B:D.81 SO4.6: 1 residues within 4Å: Chain B: R.127 2 PLIP interactions: 2 interactions with chain B Water bridges: B:R.127 Salt bridges: B:R.127 SO4.7: 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 SO4.11: 4 residues within 4Å: Chain C: K.9 Chain D: K.78, D.79, T.80 7 PLIP interactions: 1 interactions with chain C, 6 interactions with chain D Salt bridges: C:K.9, D:K.78 Hydrogen bonds: D:T.80, D:T.80 Water bridges: D:K.78, D:K.78, D:D.81 SO4.12: 1 residues within 4Å: Chain D: R.127 2 PLIP interactions: 2 interactions with chain D Water bridges: D:R.127 Salt bridges: D:R.127

4 x CA: CALCIUM ION(Non-covalent)

CA.2: 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:T.27, B:E.32, H2O.126 CA.3: 5 residues within 4Å: Chain B: D.57, D.59, 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.127 CA.8: 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:T.27, D:E.32, H2O.447 CA.9: 5 residues within 4Å: Chain D: D.57, D.59, 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.448

2 x GOL: GLYCEROL(Non-functional Binders)

GOL.4: 5 residues within 4Å: Chain B: Y.100, I.101, S.102, E.105, Q.136 8 PLIP interactions: 8 interactions with chain B Hydrogen bonds: B:Y.100, B:S.102, B:S.102 Water bridges: B:K.95, B:N.98, B:Y.100, B:Q.136, B:Q.136 GOL.10: 5 residues within 4Å: Chain D: Y.100, I.101, S.102, E.105, Q.136 8 PLIP interactions: 8 interactions with chain D Hydrogen bonds: D:Y.100, D:S.102, D:S.102 Water bridges: D:K.95, D:N.98, D:Y.100, D:Q.136, 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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