5H3O

Structure of a eukaryotic cyclic nucleotide-gated channel

  • Classification: TRANSPORT PROTEIN
  • Organism(s): Caenorhabditis elegans
  • Expression System: Trichoplusia ni

  • Deposited: 2016-10-26 Released: 2017-01-25 
  • Deposition Author(s): Li, M., Zhou, X., Wang, S., Michailidis, I., Gong, Y., Su, D., Li, H., Li, X., Yang, J.
  • Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences; National Institutes of Health/National Institute of Neurological Disorders and Stroke; National Basic Research Program of China; National Natural Science Foundation of China; Top Talents of Program of Yunnan Province; High-level Overseas Talents of Yunnan Province; China Youth 1000-talent Program of the State Council of China; Beijing Advanced Innovation Center for Structural Biology; Tsinghua-Peking Joint Center for Life Sciences; Key Research Program of the Chinese Academy of Sciences; West Light Foundation of the Chinese Academy of Sciences; Yunnan Applied Basic Research Projects; Youth Innovation Promotion Association of the Chinese Academy of Sciences 

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.5 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure of a eukaryotic cyclic-nucleotide-gated channel.

Li, M.Zhou, X.Wang, S.Michailidis, I.Gong, Y.Su, D.Li, H.Li, X.Yang, J.

(2017) Nature 542: 60-65

  • DOI: 10.1038/nature20819

  • PubMed Abstract: 
  • Cyclic-nucleotide-gated channels are essential for vision and olfaction. They belong to the voltage-gated ion channel superfamily but their activities are controlled by intracellular cyclic nucleotides instead of transmembrane voltage. Here we report ...

    Cyclic-nucleotide-gated channels are essential for vision and olfaction. They belong to the voltage-gated ion channel superfamily but their activities are controlled by intracellular cyclic nucleotides instead of transmembrane voltage. Here we report a 3.5-Å-resolution single-particle electron cryo-microscopy structure of a cyclic-nucleotide-gated channel from Caenorhabditis elegans in the cyclic guanosine monophosphate (cGMP)-bound open state. The channel has an unusual voltage-sensor-like domain, accounting for its deficient voltage dependence. A carboxy-terminal linker connecting S6 and the cyclic-nucleotide-binding domain interacts directly with both the voltage-sensor-like domain and the pore domain, forming a gating ring that couples conformational changes triggered by cyclic nucleotide binding to the gate. The selectivity filter is lined by the carboxylate side chains of a functionally important glutamate and three rings of backbone carbonyls. This structure provides a new framework for understanding mechanisms of ion permeation, gating and channelopathy of cyclic-nucleotide-gated channels and cyclic nucleotide modulation of related channels.


    Organizational Affiliation

    Beijing Advanced Innovation Center for Structural Biology, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing 100084, China.,Ion Channel Research and Drug Development Center, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China.,Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences, Chinese Academy of Sciences, Kunming 650223, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming 650204, China.,Key Laboratory of Bioactive Peptides of Yunnan Province, Chinese Academy of Sciences, Kunming 650223, China.,Department of Biological Sciences, Columbia University, New York, New York 10027, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cyclic nucleotide-gated cation channel
A, B, C, D
738Caenorhabditis elegansMutation(s): 0 
Gene Names: tax-4
Membrane protein
mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
Channels: Potassium, Sodium, & Proton Ion-Selective
Protein: 
Cyclic-nucleotide-gated (CNG) channel
Find proteins for Q03611 (Caenorhabditis elegans)
Go to UniProtKB:  Q03611
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

Download SDF File 
Download CCD File 
A, B
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
PCG
Query on PCG

Download SDF File 
Download CCD File 
A, B, C, D
CYCLIC GUANOSINE MONOPHOSPHATE
C10 H12 N5 O7 P
ZOOGRGPOEVQQDX-UUOKFMHZSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.5 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical SciencesUnited StatesR01GM085234
National Institutes of Health/National Institute of Neurological Disorders and StrokeUnited StatesRO1NS053494
National Basic Research Program of ChinaChina2014CB910301
National Natural Science Foundation of ChinaChina31370821
Top Talents of Program of Yunnan ProvinceChina2011HA012
High-level Overseas Talents of Yunnan ProvinceChina--
China Youth 1000-talent Program of the State Council of ChinaChina--
Beijing Advanced Innovation Center for Structural BiologyChina--
Tsinghua-Peking Joint Center for Life SciencesChina--
National Natural Science Foundation of ChinaChina31570730
Key Research Program of the Chinese Academy of SciencesChinaKJZD-EW-L03
National Natural Science Foundation of ChinaChina81302865
West Light Foundation of the Chinese Academy of SciencesChina--
Yunnan Applied Basic Research ProjectsChina2013FB074
Youth Innovation Promotion Association of the Chinese Academy of SciencesChina--

Revision History 

  • Version 1.0: 2017-01-25
    Type: Initial release
  • Version 1.1: 2017-10-18
    Type: Author supporting evidence
  • Version 1.2: 2017-12-13
    Type: Database references
  • Version 1.3: 2019-11-06
    Type: Data collection, Other