SMTL ID : 8v3g.1

Cryo-EM structure of the KCa2.2 channel with inhibitor UCL 1684.

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

1 x Y7Z: UCL1684

Y7Z.4: 6 residues within 4Å: Chain A: F.127, S.128 Chain B: F.127 Chain C: F.127, S.128 Chain D: F.127 No protein-ligand interaction detected (PLIP)

8 x CA: CALCIUM ION(Non-covalent)

CA.6: 5 residues within 4Å: Chain E: D.19, D.21, D.23, T.25, E.30 5 PLIP interactions: 5 interactions with chain E Metal complexes: E:D.19, E:D.23, E:T.25, E:E.30, E:E.30 CA.7: 5 residues within 4Å: Chain E: D.55, D.57, N.59, T.61, E.66 2 PLIP interactions: 2 interactions with chain E Metal complexes: E:D.55, E:T.61 CA.8: 5 residues within 4Å: Chain F: D.19, D.21, D.23, T.25, E.30 5 PLIP interactions: 5 interactions with chain F Metal complexes: F:D.19, F:D.23, F:T.25, F:E.30, F:E.30 CA.9: 5 residues within 4Å: Chain F: D.55, D.57, N.59, T.61, E.66 2 PLIP interactions: 2 interactions with chain F Metal complexes: F:D.55, F:T.61 CA.10: 5 residues within 4Å: Chain G: D.19, D.21, D.23, T.25, E.30 5 PLIP interactions: 5 interactions with chain G Metal complexes: G:D.21, G:D.23, G:T.25, G:E.30, G:E.30 CA.11: 5 residues within 4Å: Chain G: D.55, D.57, N.59, T.61, E.66 5 PLIP interactions: 5 interactions with chain G Metal complexes: G:D.55, G:D.55, G:T.61, G:E.66, G:E.66 CA.12: 5 residues within 4Å: Chain H: D.19, D.21, D.23, T.25, E.30 5 PLIP interactions: 5 interactions with chain H Metal complexes: H:D.23, H:D.23, H:T.25, H:E.30, H:E.30 CA.13: 5 residues within 4Å: Chain H: D.55, D.57, N.59, T.61, E.66 4 PLIP interactions: 4 interactions with chain H Metal complexes: H:D.55, H:D.55, H:T.61, H:E.66

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: ABCD
Calmodulin-1: EFGH

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

C
C

D
D

E
E

F
F

G
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