6JV2

Structure of RyR2 (P/L-Ca2+/Ca2+-CaM dataset)


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.4 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

Modulation of cardiac ryanodine receptor 2 by calmodulin.

Gong, D.Chi, X.Wei, J.Zhou, G.Huang, G.Zhang, L.Wang, R.Lei, J.Chen, S.R.W.Yan, N.

(2019) Nature 572: 347-351

  • DOI: 10.1038/s41586-019-1377-y
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The high-conductance intracellular calcium (Ca <sup>2+ </sup>) channel RyR2 is essential for the coupling of excitation and contraction in cardiac muscle. Among various modulators, calmodulin (CaM) regulates RyR2 in a Ca <sup>2+ </sup>-dependent mann ...

    The high-conductance intracellular calcium (Ca 2+ ) channel RyR2 is essential for the coupling of excitation and contraction in cardiac muscle. Among various modulators, calmodulin (CaM) regulates RyR2 in a Ca 2+ -dependent manner. Here we reveal the regulatory mechanism by which porcine RyR2 is modulated by human CaM through the structural determination of RyR2 under eight conditions. Apo-CaM and Ca 2+ -CaM bind to distinct but overlapping sites in an elongated cleft formed by the handle, helical and central domains. The shift in CaM-binding sites on RyR2 is controlled by Ca 2+ binding to CaM, rather than to RyR2. Ca 2+ -CaM induces rotations and intradomain shifts of individual central domains, resulting in pore closure of the PCB95 and Ca 2+ -activated channel. By contrast, the pore of the ATP, caffeine and Ca 2+ -activated channel remains open in the presence of Ca 2+ -CaM, which suggests that Ca 2+ -CaM is one of the many competing modulators of RyR2 gating.


    Organizational Affiliation

    Beijing Advanced Innovation Center for Structural Biology, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, China.,Department of Molecular Biology, Princeton University, Princeton, NJ, USA. nyan@princeton.edu.,Technology Center for Protein Sciences, Ministry of Education Key Laboratory of Protein Sciences, School of Life Sciences, Tsinghua University, Beijing, China.,Beijing Advanced Innovation Center for Structural Biology, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, China. nyan@princeton.edu.,Beijing Advanced Innovation Center for Structural Biology, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, China. gds13@tsinghua.org.cn.,Libin Cardiovascular Institute of Alberta, Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada. swchen@ucalgary.ca.,Libin Cardiovascular Institute of Alberta, Department of Physiology and Pharmacology, University of Calgary, Calgary, Alberta, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RyR2
A, C, E, G
4968N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Calmodulin-1
B, D, F, H
149Homo sapiensMutation(s): 0 
Gene Names: CALM1 (CALM, CAM, CAM1)
Find proteins for P0DP23 (Homo sapiens)
Go to Gene View: CALM1
Go to UniProtKB:  P0DP23
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, C, E, G
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

Download SDF File 
Download CCD File 
A, B, C, D, E, F, G, H
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.4 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2019-07-17
    Type: Initial release
  • Version 1.1: 2019-08-28
    Type: Data collection, Database references, Source and taxonomy, Structure summary