- Coordinates
- PDB Format
- Method
- ELECTRON MICROSCOPY 3.30 Å
- Oligo State
- hetero-4-4-mer
- Ligands
- 4 x 01: N-(2,1,3-benzoxadiazol-4-yl)-3-(4-methoxybenzene-1-sulfonamido)benzamide
01.1: 17 residues within 4Å:- Chain A: L.205, L.206, S.209, I.210, L.212, W.213, A.216, I.243, S.244, F.247, L.248, T.269, M.272, T.277, V.280
- Chain B: I.271, A.274
13 PLIP interactions:12 interactions with chain A, 1 interactions with chain B- Hydrophobic interactions: A:A.216, A:I.243, A:F.247, A:F.247, A:L.248, A:T.269, A:V.280, B:I.271
- Hydrogen bonds: A:S.209, A:S.209, A:S.209
- pi-Stacking: A:W.213, A:F.247
01.6: 17 residues within 4Å:- Chain B: L.205, L.206, S.209, I.210, L.212, W.213, A.216, I.243, S.244, F.247, L.248, T.269, M.272, T.277, V.280
- Chain C: I.271, A.274
13 PLIP interactions:1 interactions with chain C, 12 interactions with chain B- Hydrophobic interactions: C:I.271, B:A.216, B:I.243, B:F.247, B:F.247, B:L.248, B:T.269, B:V.280
- Hydrogen bonds: B:S.209, B:S.209, B:S.209
- pi-Stacking: B:W.213, B:F.247
01.7: 17 residues within 4Å:- Chain C: L.205, L.206, S.209, I.210, L.212, W.213, A.216, I.243, S.244, F.247, L.248, T.269, M.272, T.277, V.280
- Chain D: I.271, A.274
13 PLIP interactions:12 interactions with chain C, 1 interactions with chain D- Hydrophobic interactions: C:A.216, C:I.243, C:F.247, C:F.247, C:L.248, C:T.269, C:V.280, D:I.271
- Hydrogen bonds: C:S.209, C:S.209, C:S.209
- pi-Stacking: C:W.213, C:F.247
01.8: 17 residues within 4Å:- Chain A: I.271, A.274
- Chain D: L.205, L.206, S.209, I.210, L.212, W.213, A.216, I.243, S.244, F.247, L.248, T.269, M.272, T.277, V.280
13 PLIP interactions:12 interactions with chain D, 1 interactions with chain A- Hydrophobic interactions: D:A.216, D:I.243, D:F.247, D:F.247, D:L.248, D:T.269, D:V.280, A:I.271
- Hydrogen bonds: D:S.209, D:S.209, D:S.209
- pi-Stacking: D:W.213, D:F.247
- 4 x K: POTASSIUM ION(Non-covalent)
- 16 x CA: CALCIUM ION(Non-covalent)
CA.9: 6 residues within 4Å:- Chain E: D.21, D.23, D.25, T.27, T.29, E.32
5 PLIP interactions:5 interactions with chain E- Metal complexes: E:D.23, E:D.25, E:T.27, E:E.32, E:E.32
CA.10: 5 residues within 4Å:- Chain E: D.57, D.59, N.61, T.63, E.68
5 PLIP interactions:5 interactions with chain E- Metal complexes: E:D.59, E:D.59, E:T.63, E:E.68, E:E.68
CA.11: 6 residues within 4Å:- Chain E: D.94, D.96, N.98, Y.100, I.101, E.105
4 PLIP interactions:4 interactions with chain E- Metal complexes: E:D.94, E:D.96, E:D.96, E:Y.100
CA.12: 6 residues within 4Å:- Chain E: D.130, D.132, D.134, Q.136, E.140, E.141
4 PLIP interactions:4 interactions with chain E- Metal complexes: E:D.132, E:D.132, E:D.134, E:E.141
CA.13: 5 residues within 4Å:- Chain F: D.21, D.23, D.25, T.27, E.32
5 PLIP interactions:5 interactions with chain F- Metal complexes: F:D.21, F:D.23, F:D.25, F:T.27, F:E.32
CA.14: 6 residues within 4Å:- Chain F: D.57, D.59, N.61, T.63, D.65, E.68
4 PLIP interactions:4 interactions with chain F- Metal complexes: F:D.57, F:D.59, F:T.63, F:E.68
CA.15: 6 residues within 4Å:- Chain F: D.94, D.96, N.98, Y.100, I.101, E.105
5 PLIP interactions:5 interactions with chain F- Metal complexes: F:D.94, F:D.96, F:D.96, F:Y.100, F:E.105
CA.16: 5 residues within 4Å:- Chain F: D.132, D.134, Q.136, N.138, E.141
5 PLIP interactions:5 interactions with chain F- Metal complexes: F:D.132, F:D.132, F:D.134, F:Q.136, F:E.141
CA.17: 5 residues within 4Å:- Chain G: D.21, D.23, D.25, T.27, E.32
5 PLIP interactions:5 interactions with chain G- Metal complexes: G:D.23, G:D.25, G:T.27, G:E.32, G:E.32
CA.18: 6 residues within 4Å:- Chain G: D.57, D.59, N.61, T.63, D.65, E.68
4 PLIP interactions:4 interactions with chain G- Metal complexes: G:D.57, G:D.59, G:T.63, G:E.68
CA.19: 6 residues within 4Å:- Chain G: D.94, D.96, N.98, Y.100, I.101, E.105
5 PLIP interactions:5 interactions with chain G- Metal complexes: G:D.94, G:D.96, G:D.96, G:Y.100, G:E.105
CA.20: 5 residues within 4Å:- Chain G: D.132, D.134, Q.136, N.138, E.141
5 PLIP interactions:5 interactions with chain G- Metal complexes: G:D.132, G:D.132, G:D.134, G:Q.136, G:E.141
CA.21: 5 residues within 4Å:- Chain H: D.21, D.23, D.25, T.27, E.32
5 PLIP interactions:5 interactions with chain H- Metal complexes: H:D.21, H:D.23, H:T.27, H:E.32, H:E.32
CA.22: 6 residues within 4Å:- Chain H: D.57, D.59, N.61, T.63, D.65, E.68
4 PLIP interactions:4 interactions with chain H- Metal complexes: H:D.57, H:D.59, H:T.63, H:E.68
CA.23: 6 residues within 4Å:- Chain H: D.94, D.96, N.98, Y.100, I.101, E.105
5 PLIP interactions:5 interactions with chain H- Metal complexes: H:D.94, H:D.96, H:D.96, H:Y.100, H:E.105
CA.24: 5 residues within 4Å:- Chain H: D.132, D.134, Q.136, N.138, E.141
5 PLIP interactions:5 interactions with chain H- Metal complexes: H:D.132, H:D.132, H:D.134, H:Q.136, H:E.141
- Links
- RCSB PDBe PDBe-KB PDBj PDBsum CATH PLIP
- Citation
- Cassell, S.J. et al., Mechanism of SK2 channel gating and its modulation by the bee toxin apamin and small molecules. To Be Published
- Release Date
- 2025-07-09
- Peptides
- Intermediate conductance calcium-activated potassium channel protein 4,Small conductance calcium-activated potassium channel protein 2 chimera: ABCD
Calmodulin-1: EFGH - SMTL:PDB
- SMTL Chain Id:
PDB Chain Id:A
AB
BC
CD
DE
EF
FG
GH
H - Membrane
-
We predict this structure to be a membrane protein.
SMTL ID : 9o53.1
Cryo-EM structure of the human SK2-4 chimera/calmodulin channel complex bound to a small molecule inhibitor
Intermediate conductance calcium-activated potassium channel protein 4,Small conductance calcium-activated potassium channel protein 2 chimera
Toggle Identical (ABCD)Calmodulin-1
Toggle Identical (EFGH)Related Entries With Identical Sequence
1iq5.1 | 1lvc.1 | 1lvc.2 | 1lvc.3 | 1wrz.1 | 2bki.1 | 2r28.1 | 2v01.1 | 2v02.1 | 2w73.1 | 2w73.2 | 2y4v.1 | 3hr4.1 | 3hr4.2 | 3hr4.3 | 3hr4.4 | 3j41.1 | 3oxq.1 | 3oxq.2 | 3sjq.1 | 3sui.1 | 4bw7.1 | 4bw7.2 | 4bw7.3 | 4bw8.1 | 4bw8.2 | 4byf.1 | 4byf.2 | 4dck.1 | 4dck.2 more...less...4g27.1 | 4g28.1 | 4j9y.1 | 4j9z.1 | 4jpz.1 | 4jpz.2 | 4jq0.1 | 4l79.1 | 4ovn.1 | 4ovn.2 | 4ovn.3 | 4ovn.4 | 4ovn.5 | 4q5u.1 | 4umo.1 | 4v0c.1 | 4zlk.1 | 5j03.1 | 5jqa.1 | 5k7l.1 | 5k7l.2 | 5k7l.3 | 5k8q.1 | 5nin.1 | 5nin.2 | 5v02.1 | 5v03.1 | 5v7x.1 | 5vms.1 | 5vms.2 | 5vms.3 | 6b8l.1 | 6b8l.2 | 6b8l.3 | 6b8l.4 | 6b8m.1 | 6b8m.2 | 6b8m.3 | 6b8m.4 | 6b8n.1 | 6b8n.2 | 6b8n.3 | 6b8n.4 | 6b8p.1 | 6b8p.2 | 6b8p.3 | 6b8p.4 | 6b8q.1 | 6b8q.2 | 6b8q.3 | 6b8q.4 | 6cnm.1 | 6cnn.1 | 6cno.1 | 6dmw.1 | 6e2f.1 | 6e2g.1 | 6feg.1 | 6feh.1 | 6ji8.1 | 6jiu.1 | 6jiy.1 | 6jrs.1 | 6jv2.1 | 6k4k.1 | 6k4k.2 | 6k4l.1 | 6k4l.2 | 6k4r.1 | 6k4r.2 | 6mba.1 | 6mc9.1 | 6mud.1 | 6n5w.1 | 6paw.1 | 6paw.2 | 6paw.3 | 6paw.4 | 6pbx.1 | 6pby.1 | 6s5t.1 | 6sz5.1 | 6uzz.1 | 6v00.1 | 6v01.1 | 6xxf.1 | 6y4o.1 | 7b1g.1 | 7bf1.1 | 7bf2.1 | 7byl.1 | 7bym.1 | 7byn.1 | 7cr3.1 | 7cr4.1 | 7cr7.1 | 7kl5.1 | 7sx3.1 | 7sx4.1 | 7tci.1 | 7tcp.1 | 7u9t.1 | 7ua3.1 | 7ua4.1 | 7vnp.1 | 7vnq.1 | 7vnr.1 | 7wji.1 | 7wr4.1 | 7wr5.1 | 7xn4.1 | 7xn5.1 | 7xn6.1 | 8ahs.1 | 8bx7.1 | 8dgh.1 | 8dgk.1 | 8ijk.1 | 8j07.736 | 8jfk.1 | 8sik.1 | 8sim.1 | 8sin.1 | 8uxl.1 | 8uxm.1 | 8w41.1 | 8w4u.1 | 8x43.1 | 8xo1.1 | 8xya.1 | 8xyb.1 | 9cui.1 | 9cuk.1 | 9d9z.1 | 9ijj.333 | 9ijj.378 | 9ijj.379 | 9ijj.380 | 9ijj.385 | 9ijj.386 | 9ijj.387 | 9ixz.1 | 9j38.1 | 9nwe.1 | 9o48.1 | 9o51.1 | 9o52.1 | 9o5o.1