7UA4

Structure of PKA phosphorylated human RyR2-R2474S in the open state in the presence of Calmodulin

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.93 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history. 


Literature

Structural analyses of human ryanodine receptor type 2 channels reveal the mechanisms for sudden cardiac death and treatment.

Miotto, M.C., Weninger, G., Dridi, H., Yuan, Q., Liu, Y., Wronska, A., Melville, Z., Sittenfeld, L., Reiken, S., Marks, A.R.

(2022) Sci Adv 8: eabo1272-eabo1272

  • DOI: 10.1126/sciadv.abo1272
  • Primary Citation of Related Structures:  
    7U9Q, 7U9R, 7U9T, 7U9X, 7U9Z, 7UA1, 7UA3, 7UA4, 7UA5, 7UA9

  • PubMed Abstract: 

    • Ryanodine receptor type 2 (RyR2) mutations have been linked to an inherited form of exercise-induced sudden cardiac death called catecholaminergic polymorphic ventricular tachycardia (CPVT). CPVT results from stress-induced sarcoplasmic reticular Ca 2+ leak via the mutant RyR2 channels during diastole ...

    Ryanodine receptor type 2 (RyR2) mutations have been linked to an inherited form of exercise-induced sudden cardiac death called catecholaminergic polymorphic ventricular tachycardia (CPVT). CPVT results from stress-induced sarcoplasmic reticular Ca 2+ leak via the mutant RyR2 channels during diastole. We present atomic models of human wild-type (WT) RyR2 and the CPVT mutant RyR2-R2474S determined by cryo-electron microscopy with overall resolutions in the range of 2.6 to 3.6 Å, and reaching local resolutions of 2.25 Å, unprecedented for RyR2 channels. Under nonactivating conditions, the RyR2-R2474S channel is in a "primed" state between the closed and open states of WT RyR2, rendering it more sensitive to activation that results in stress-induced Ca 2+ leak. The Rycal drug ARM210 binds to RyR2-R2474S, reverting the primed state toward the closed state. Together, these studies provide a mechanism for CPVT and for the therapeutic actions of ARM210.

    Organizational Affiliation: 

    Clyde and Helen Wu Center for Molecular Cardiology, Columbia University, New York, NY, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Ryanodine receptor 2A,
J [auth B],
K [auth C],
L [auth D]		4967Homo sapiensMutation(s): 1 
Gene Names: RYR2
UniProt & NIH Common Fund Data Resources
Find proteins for Q92736 (Homo sapiens)
Explore Q92736 
Go to UniProtKB:  Q92736
PHAROS:  Q92736
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UniProt GroupQ92736
Protein Feature View
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Peptidyl-prolyl cis-trans isomerase FKBP1BB [auth E],
C [auth F],
D [auth G],
E [auth H]		108Homo sapiensMutation(s): 0 
Gene Names: FKBP1B, FKBP12.6, FKBP1L, FKBP9, OTK4
EC: 5.2.1.8
UniProt & NIH Common Fund Data Resources
Find proteins for P68106 (Homo sapiens)
Explore P68106 
Go to UniProtKB:  P68106
PHAROS:  P68106
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UniProt GroupP68106
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Calmodulin-1F [auth I],
G [auth J],
H [auth K],
I [auth L]		149Homo sapiensMutation(s): 0 
Gene Names: CALM1, CALM, CAM, CAM1
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Find proteins for P0DP23 (Homo sapiens)
Explore P0DP23 
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PHAROS:  P0DP23
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UniProt GroupP0DP23
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP (Subject of Investigation/LOI)
Query on ATP
Download Ideal Coordinates CCD File 
AA [auth C],
CA [auth D],
FA [auth D],
N [auth A],
Q [auth A],
AA [auth C],
CA [auth D],
FA [auth D],
N [auth A],
Q [auth A],
S [auth B],
V [auth B],
X [auth C]
ADENOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O13 P3
ZKHQWZAMYRWXGA-KQYNXXCUSA-N		 Ligand Interaction
XAN (Subject of Investigation/LOI)
Query on XAN
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EA [auth D],
P [auth A],
U [auth B],
Z [auth C]		XANTHINE
C5 H4 N4 O2
LRFVTYWOQMYALW-UHFFFAOYSA-N		 Ligand Interaction
ZN (Subject of Investigation/LOI)
Query on ZN
Download Ideal Coordinates CCD File 
BA [auth D],
M [auth A],
R [auth B],
W [auth C]		ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N		 Ligand Interaction
CA (Subject of Investigation/LOI)
Query on CA
Download Ideal Coordinates CCD File 
DA [auth D],
O [auth A],
T [auth B],
Y [auth C]		CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.93 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Institutes of Health/National Heart, Lung, and Blood Institute (NIH/NHLBI)United StatesR01HL145473

Revision History  (Full details and data files)

  • Version 1.0: 2022-08-03
    Type: Initial release