SMTL ID : 7lfx.1

Cryo-EM structure of human cGMP-bound open CNGA1 channel in Na+/Ca2+

Coordinates

PDB Format Compare

Method

ELECTRON MICROSCOPY

Oligo State

homo-tetramer

Ligands

4 x PCG: CYCLIC GUANOSINE MONOPHOSPHATE(Non-covalent)

PCG.1: 13 residues within 4Å: Chain A: V.396, V.406, F.414, G.415, E.416, I.417, S.418, R.430, R.431, T.432, A.433, I.435, I.472 9 PLIP interactions: 9 interactions with chain A Hydrogen bonds: A:G.415, A:E.416, A:I.417, A:S.418, A:R.430, A:T.432, A:T.432, A:T.432 Salt bridges: A:R.431 PCG.4: 13 residues within 4Å: Chain B: V.396, V.406, F.414, G.415, E.416, I.417, S.418, R.430, R.431, T.432, A.433, I.435, I.472 9 PLIP interactions: 9 interactions with chain B Hydrogen bonds: B:G.415, B:E.416, B:I.417, B:S.418, B:R.430, B:T.432, B:T.432, B:T.432 Salt bridges: B:R.431 PCG.5: 13 residues within 4Å: Chain C: V.396, V.406, F.414, G.415, E.416, I.417, S.418, R.430, R.431, T.432, A.433, I.435, I.472 9 PLIP interactions: 9 interactions with chain C Hydrogen bonds: C:G.415, C:E.416, C:I.417, C:S.418, C:R.430, C:T.432, C:T.432, C:T.432 Salt bridges: C:R.431 PCG.6: 13 residues within 4Å: Chain D: V.396, V.406, F.414, G.415, E.416, I.417, S.418, R.430, R.431, T.432, A.433, I.435, I.472 9 PLIP interactions: 9 interactions with chain D Hydrogen bonds: D:G.415, D:E.416, D:I.417, D:S.418, D:R.430, D:T.432, D:T.432, D:T.432 Salt bridges: D:R.431

2 x CA: CALCIUM ION(Non-covalent)(Non-functional Binders)

CA.2: 8 residues within 4Å: Chain A: I.233, E.235 Chain B: I.233, E.235 Chain C: I.233, E.235 Chain D: I.233, E.235 No protein-ligand interaction detected (PLIP) CA.3: 0 residues within 4Å: (No contacts) No protein-ligand interaction detected (PLIP)

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Xue, J. et al., Structural mechanisms of gating and selectivity of human rod CNGA1 channel. Neuron (2021)

Release Date

2021-03-10

Peptides

cGMP-gated cation channel alpha-1: ABCD

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

C
C

D
D

Membrane

We predict this structure to be a membrane protein.
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cGMP-gated cation channel alpha-1

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