SMTL ID : 9upf.1

Cryo-EM structure of human olfactory CNG channel in cAMP-bound open state

Coordinates

PDB Format Compare

Method

ELECTRON MICROSCOPY 3.59 Å

Oligo State

hetero-1-2-1-mer

Ligands

2 x CA: CALCIUM ION(Non-covalent)

CA.1: 2 residues within 4Å: Chain A: T.845 Chain C: T.231 No protein-ligand interaction detected (PLIP) CA.2: 5 residues within 4Å: Chain A: I.846 Chain B: I.338 Chain C: T.231, V.232 Chain D: I.338 2 PLIP interactions: 1 interactions with chain C, 1 interactions with chain A Metal complexes: C:V.232, A:I.846

4 x CMP: ADENOSINE-3',5'-CYCLIC-MONOPHOSPHATE(Non-covalent)

CMP.3: 9 residues within 4Å: Chain A: V.1020, F.1028, G.1029, E.1030, I.1031, S.1032, R.1042, T.1043, A.1044 7 PLIP interactions: 7 interactions with chain A Hydrogen bonds: A:G.1029, A:E.1030, A:E.1030, A:I.1031, A:S.1032, A:T.1043 Salt bridges: A:R.1042 CMP.4: 12 residues within 4Å: Chain B: C.482, A.511, F.519, G.520, E.521, I.522, S.523, R.536, T.537, A.538, I.540, I.577 6 PLIP interactions: 6 interactions with chain B Hydrogen bonds: B:G.520, B:E.521, B:I.522, B:S.523, B:T.537 Salt bridges: B:R.536 CMP.5: 12 residues within 4Å: Chain C: V.395, Y.404, F.413, G.414, E.415, I.416, S.417, R.430, T.431, A.432, I.434, I.471 6 PLIP interactions: 6 interactions with chain C Hydrogen bonds: C:G.414, C:E.415, C:I.416, C:S.417, C:T.431 Salt bridges: C:R.430 CMP.6: 12 residues within 4Å: Chain D: V.501, A.511, F.519, G.520, I.522, S.523, R.536, T.537, A.538, I.540, I.577, K.580 7 PLIP interactions: 7 interactions with chain D Hydrogen bonds: D:G.520, D:E.521, D:S.523, D:T.537, D:A.538, D:K.580 Salt bridges: D:R.536

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 beta-1: A
Cyclic nucleotide-gated channel alpha-2: BD
Cyclic nucleotide-gated channel alpha-4: C

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
B

B
A

D
C

C
D

Membrane

We predict this structure to be a membrane protein.
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Cyclic nucleotide-gated channel beta-1

Cyclic nucleotide-gated channel alpha-2

Cyclic nucleotide-gated channel alpha-4

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