SMTL ID : 9upg.1

Cryo-EM structure of human olfactory CNGA2/A4/B1 in CaM-bound closed state

Coordinates

PDB Format Compare

Method

ELECTRON MICROSCOPY 2.87 Å

Oligo State

hetero-2-1-1-1-mer

Ligands

6 x CA: CALCIUM ION(Non-covalent)

CA.1: 2 residues within 4Å: Chain B: T.231 Chain C: T.337 2 PLIP interactions: 1 interactions with chain B, 1 interactions with chain C Metal complexes: B:T.231, C:T.337 CA.2: 5 residues within 4Å: Chain B: V.232, D.234 Chain C: I.338, E.340 Chain D: I.846 3 PLIP interactions: 1 interactions with chain B, 2 interactions with chain C Metal complexes: B:V.232, C:I.338, C:E.340 CA.3: 5 residues within 4Å: Chain E: D.94, D.96, N.98, Y.100, E.105 2 PLIP interactions: 2 interactions with chain E Metal complexes: E:D.96, E:Y.100 CA.4: 6 residues within 4Å: Chain E: D.130, D.132, D.134, Q.136, V.137, N.138 3 PLIP interactions: 3 interactions with chain E Metal complexes: E:D.130, E:D.132, E:Q.136 CA.5: 6 residues within 4Å: Chain E: D.21, D.23, D.25, T.27, T.29, E.32 3 PLIP interactions: 3 interactions with chain E Metal complexes: E:D.25, E:T.27, E:E.32 CA.6: 5 residues within 4Å: Chain E: D.57, N.61, T.63, D.65, E.68 3 PLIP interactions: 3 interactions with chain E Metal complexes: E:D.57, E:D.57, E:T.63

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Xue, J. et al., Structural mechanisms underlying assembly, gating, and calmodulin inhibition of olfactory CNG channels. To Be Published

Release Date

2025-09-24

Peptides

Cyclic nucleotide-gated channel alpha-2: AC
Cyclic nucleotide-gated channel alpha-4: B
Cyclic nucleotide-gated channel beta-1: D
Calmodulin-1: E

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

C
C

B
D

D
B

E
H

Membrane

We predict this structure to be a membrane protein.
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Cyclic nucleotide-gated channel alpha-2

Cyclic nucleotide-gated channel alpha-4

Cyclic nucleotide-gated channel beta-1

Calmodulin-1

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