SMTL ID : 8v2h.1

Cryo-EM structure of the KCa2.2 channel bound to inhibitor AP14145.

Coordinates

PDB Format Compare

Method

ELECTRON MICROSCOPY

Oligo State

hetero-4-4-mer

Ligands

4 x K: POTASSIUM ION(Non-covalent)(Non-functional Binders)

K.1: 5 residues within 4Å: Chain A: S.242 Chain C: S.242 Chain E: S.242 Chain G: S.242 Ligands: K.2 No protein-ligand interaction detected (PLIP) K.2: 9 residues within 4Å: Chain A: S.242, I.243 Chain C: S.242, I.243 Chain E: S.242, I.243 Chain G: S.242, I.243 Ligands: K.1 No protein-ligand interaction detected (PLIP) K.3: 8 residues within 4Å: Chain A: I.243, G.244 Chain C: I.243, G.244 Chain E: I.243, G.244 Chain G: I.243, G.244 No protein-ligand interaction detected (PLIP) K.4: 0 residues within 4Å: (No contacts) No protein-ligand interaction detected (PLIP)

8 x CA: CALCIUM ION(Non-covalent)

CA.5: 5 residues within 4Å: Chain B: D.19, D.21, D.23, T.25, E.30 3 PLIP interactions: 3 interactions with chain B Metal complexes: B:D.19, B:D.21, B:T.25 CA.6: 5 residues within 4Å: Chain B: D.57, N.59, T.61, I.62, D.63 3 PLIP interactions: 3 interactions with chain B Metal complexes: B:T.61, B:D.63, B:D.63 CA.7: 5 residues within 4Å: Chain D: D.23, T.25, I.26, T.27, E.30 3 PLIP interactions: 3 interactions with chain D Metal complexes: D:T.25, D:T.25, D:E.30 CA.8: 8 residues within 4Å: Chain D: D.55, A.56, D.57, G.58, N.59, T.61, D.63, E.66 4 PLIP interactions: 4 interactions with chain D Metal complexes: D:D.55, D:T.61, D:E.66, D:E.66 CA.9: 5 residues within 4Å: Chain F: K.20, T.25, I.26, T.27, E.30 2 PLIP interactions: 2 interactions with chain F Metal complexes: F:T.25, F:T.27 CA.10: 6 residues within 4Å: Chain F: D.55, N.59, T.61, I.62, D.63, E.66 3 PLIP interactions: 3 interactions with chain F Metal complexes: F:T.61, F:D.63, F:D.63 CA.11: 5 residues within 4Å: Chain H: D.21, T.25, T.27, K.29, E.30 1 PLIP interactions: 1 interactions with chain H Metal complexes: H:E.30 CA.12: 6 residues within 4Å: Chain H: D.55, D.57, N.59, T.61, I.62, D.63 1 PLIP interactions: 1 interactions with chain H Metal complexes: H:T.61

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Nam, Y.W. et al., Cryo-EM structures of the small-conductance Ca2+-activated KCa2.2 channel. Nat Commun (2025)

Release Date

2025-04-23

Peptides

Small conductance calcium-activated potassium channel protein 2: ACEG
Calmodulin-1: BDFH

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

C
B

E
C

G
D

B
E

D
F

F
G

H
H

Membrane

We predict this structure to be a membrane protein.
Show / Hide

Small conductance calcium-activated potassium channel protein 2

Calmodulin-1

Related Entries With Identical Sequence