SMTL ID : 4l73.1

Ca2+-bound MthK RCK domain at 2.5 Angstrom

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 2.50 Å

Oligo State

homo-dimer

Ligands

5 x CA: CALCIUM ION(Non-covalent)

CA.1: 4 residues within 4Å: Chain A: S.18, D.78, E.104, E.106 5 PLIP interactions: 2 interactions with chain A, 3 Ligand-Water interactions Metal complexes: A:D.78, A:E.104, H2O.1, H2O.1, H2O.1 CA.2: 4 residues within 4Å: Chain A: R.135, D.139, E.142 Chain B: E.160 5 PLIP interactions: 3 interactions with chain A, 1 interactions with chain B, 1 Ligand-Water interactions Metal complexes: A:R.135, A:D.139, A:E.142, B:E.160, H2O.1 CA.3: 3 residues within 4Å: Chain A: G.184, E.220 Chain B: D.199 5 PLIP interactions: 2 interactions with chain A, 1 interactions with chain B, 2 Ligand-Water interactions Metal complexes: A:G.184, A:E.220, B:D.199, H2O.2, H2O.3 CA.9: 4 residues within 4Å: Chain B: S.18, D.78, E.104, E.106 5 PLIP interactions: 2 interactions with chain B, 3 Ligand-Water interactions Metal complexes: B:D.78, B:E.104, H2O.2, H2O.3, H2O.3 CA.10: 3 residues within 4Å: Chain A: D.199 Chain B: G.184, E.220 5 PLIP interactions: 1 interactions with chain A, 2 interactions with chain B, 2 Ligand-Water interactions Metal complexes: A:D.199, B:G.184, B:E.220, H2O.1, H2O.2

8 x NA: SODIUM ION(Non-functional Binders)

NA.4: 2 residues within 4Å: Chain A: D.181 Chain B: R.202 2 PLIP interactions: 1 interactions with chain B, 1 interactions with chain A Hydrogen bonds: B:R.202, A:D.181 NA.5: 2 residues within 4Å: Chain A: D.181 Ligands: NA.14 1 PLIP interactions: 1 interactions with chain A Hydrogen bonds: A:D.181 NA.6: 2 residues within 4Å: Chain A: S.31, G.50 1 PLIP interactions: 1 interactions with chain A Hydrogen bonds: A:S.31 NA.7: 3 residues within 4Å: Chain A: R.10, R.70, D.96 2 PLIP interactions: 2 interactions with chain A Hydrogen bonds: A:R.10, A:D.96 NA.8: 4 residues within 4Å: Chain A: D.178, D.181 Chain B: D.181 Ligands: NA.14 2 PLIP interactions: 2 interactions with chain A Hydrogen bonds: A:D.181, A:D.181 NA.12: 2 residues within 4Å: Chain B: S.31, G.50 2 PLIP interactions: 2 interactions with chain B Hydrogen bonds: B:S.31 Water bridges: B:V.33 NA.13: 4 residues within 4Å: Chain B: R.10, R.70, A.72, D.96 3 PLIP interactions: 3 interactions with chain B Hydrogen bonds: B:R.10, B:R.70 Water bridges: B:R.10 NA.14: 4 residues within 4Å: Chain B: D.178, D.181 Ligands: NA.5, NA.8 2 PLIP interactions: 2 interactions with chain B Hydrogen bonds: B:D.181, B:D.181

1 x CL: CHLORIDE ION(Non-functional Binders)

CL.11: 3 residues within 4Å: Chain B: R.43, V.54, H.55 Ligand excluded by PLIP

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Smith, F.J. et al., Structural basis of allosteric interactions among Ca(2+)-binding sites in a K(+) channel RCK domain. Nat Commun (2013)

Release Date

2013-10-23

Peptides

Calcium-gated potassium channel MthK: AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

Calcium-gated potassium channel MthK

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