6LOM

Structure of CLHM1 from Caenorhabditis Elegans


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.73 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Cryo-electron microscopy structure of CLHM1 ion channel from Caenorhabditis elegans.

Yang, W.Wang, Y.Guo, J.He, L.Zhou, Y.Zheng, H.Liu, Z.Zhu, P.Zhang, X.C.

(2020) Protein Sci 29: 1803-1815

  • DOI: 10.1002/pro.3904
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Calcium homeostasis modulators (CALHMs/CLHMs) comprise a family of pore-forming protein complexes assembling into voltage-gated, Ca 2+ -sensitive, nonselective channels. These complexes contain an ion-conduction pore sufficiently wide to ...

    Calcium homeostasis modulators (CALHMs/CLHMs) comprise a family of pore-forming protein complexes assembling into voltage-gated, Ca 2+ -sensitive, nonselective channels. These complexes contain an ion-conduction pore sufficiently wide to permit the passing of ATP molecules serving as neurotransmitters. While their function and structure information is accumulating, the precise mechanisms of these channel complexes remain to be full understood. Here, we present the structure of the Caenorhabditis elegans CLHM1 channel in its open state solved through single-particle cryo-electron microscopy at 3.7-Å resolution. The transmembrane region of the channel structure of the dominant class shows an assembly of 10-fold rotational symmetry in one layer, and its cytoplasmic region is involved in additional twofold symmetrical packing in a tail-to-tail manner. Furthermore, we identified a series of amino acid residues critical for the regulation of CeCLHM1 channel using functional assays, electrophysiological analyses as well as structural-based analysis. Our structure and function analyses provide new insights into the mechanisms of CALHM channels.


    Organizational Affiliation

    College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Calcium homeostasis modulator proteinA, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T329Caenorhabditis elegansMutation(s): 0 
Gene Names: clhm-1C44B7.4
Find proteins for Q18593 (Caenorhabditis elegans)
Explore Q18593 
Go to UniProtKB:  Q18593
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.73 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Science Foundation (NSF, China)China--

Revision History 

  • Version 1.0: 2020-07-29
    Type: Initial release
  • Version 1.1: 2020-08-05
    Changes: Database references