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- PDB-7vml: Structure of recombinant RyR2 (EGTA dataset, class 1&2, closed state) -

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Basic information

Entry
Database: PDB / ID: 7vml
TitleStructure of recombinant RyR2 (EGTA dataset, class 1&2, closed state)
Components
  • Peptidyl-prolyl cis-trans isomerase FKBP1B
  • Ryanodine receptor 2
KeywordsMEMBRANE PROTEIN / CALCIUM / CALCIUM CHANNEL / CALCIUM TRANSPORT / ION TRANSPORT / IONIC CHANNEL / METAL TRANSPORT / ER/SR MEMBRANE / RYANODINE RECEPTOR / RYANODINE / RECEPTOR / WILD TYPE
Function / homology
Function and homology information


: / establishment of protein localization to endoplasmic reticulum / type B pancreatic cell apoptotic process / Purkinje myocyte to ventricular cardiac muscle cell signaling / suramin binding / regulation of SA node cell action potential / regulation of atrial cardiac muscle cell action potential / left ventricular cardiac muscle tissue morphogenesis / regulation of AV node cell action potential / Stimuli-sensing channels ...: / establishment of protein localization to endoplasmic reticulum / type B pancreatic cell apoptotic process / Purkinje myocyte to ventricular cardiac muscle cell signaling / suramin binding / regulation of SA node cell action potential / regulation of atrial cardiac muscle cell action potential / left ventricular cardiac muscle tissue morphogenesis / regulation of AV node cell action potential / Stimuli-sensing channels / Ion homeostasis / regulation of ventricular cardiac muscle cell action potential / ventricular cardiac muscle cell action potential / positive regulation of sequestering of calcium ion / cyclic nucleotide binding / negative regulation of calcium-mediated signaling / embryonic heart tube morphogenesis / cardiac muscle hypertrophy / negative regulation of insulin secretion involved in cellular response to glucose stimulus / negative regulation of release of sequestered calcium ion into cytosol / neuronal action potential propagation / insulin secretion involved in cellular response to glucose stimulus / calcium ion transport into cytosol / ryanodine-sensitive calcium-release channel activity / response to caffeine / response to redox state / release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / : / 'de novo' protein folding / calcium ion transmembrane import into cytosol / negative regulation of heart rate / response to muscle activity / FK506 binding / positive regulation of axon regeneration / channel regulator activity / protein kinase A regulatory subunit binding / protein kinase A catalytic subunit binding / positive regulation of the force of heart contraction / cellular response to caffeine / intracellularly gated calcium channel activity / smooth muscle contraction / detection of calcium ion / response to vitamin E / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / calcium channel inhibitor activity / smooth endoplasmic reticulum / regulation of ryanodine-sensitive calcium-release channel activity / positive regulation of heart rate / T cell proliferation / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / Ion homeostasis / release of sequestered calcium ion into cytosol / calcium channel complex / cellular response to epinephrine stimulus / response to muscle stretch / sarcoplasmic reticulum membrane / regulation of heart rate / sarcomere / sarcoplasmic reticulum / establishment of localization in cell / peptidyl-prolyl cis-trans isomerase activity / peptidylprolyl isomerase / calcium-mediated signaling / calcium channel activity / response to hydrogen peroxide / Stimuli-sensing channels / calcium ion transmembrane transport / Z disc / intracellular calcium ion homeostasis / calcium ion transport / positive regulation of cytosolic calcium ion concentration / protein refolding / transmembrane transporter binding / response to hypoxia / calmodulin binding / signaling receptor binding / calcium ion binding / protein kinase binding / enzyme binding / protein-containing complex / identical protein binding / membrane / cytoplasm
Similarity search - Function
Ryanodine receptor, SPRY domain 2 / : / Ryanodine receptor junctional solenoid repeat / Ryanodine Receptor TM 4-6 / Ryanodine receptor / Ryanodine receptor, SPRY domain 1 / Ryanodine receptor, SPRY domain 3 / Ryanodine Receptor TM 4-6 / Ryanodine receptor Ryr / RyR domain ...Ryanodine receptor, SPRY domain 2 / : / Ryanodine receptor junctional solenoid repeat / Ryanodine Receptor TM 4-6 / Ryanodine receptor / Ryanodine receptor, SPRY domain 1 / Ryanodine receptor, SPRY domain 3 / Ryanodine Receptor TM 4-6 / Ryanodine receptor Ryr / RyR domain / : / RyR/IP3 receptor binding core, RIH domain superfamily / RyR/IP3R Homology associated domain / Inositol 1,4,5-trisphosphate/ryanodine receptor / RIH domain / RyR and IP3R Homology associated / Inositol 1,4,5-trisphosphate/ryanodine receptor / RIH domain / : / MIR motif / MIR domain / MIR domain profile. / Domain in ryanodine and inositol trisphosphate receptors and protein O-mannosyltransferases / Mir domain superfamily / SPRY domain / B30.2/SPRY domain / B30.2/SPRY domain profile. / B30.2/SPRY domain superfamily / Domain in SPla and the RYanodine Receptor. / SPRY domain / FKBP-type peptidyl-prolyl cis-trans isomerase domain profile. / FKBP-type peptidyl-prolyl cis-trans isomerase domain / FKBP-type peptidyl-prolyl cis-trans isomerase / Peptidyl-prolyl cis-trans isomerase domain superfamily / EF-hand domain pair / EF-hand domain / Ion transport domain / Ion transport protein / EF-hand domain pair / Concanavalin A-like lectin/glucanase domain superfamily
Similarity search - Domain/homology
Ryanodine receptor 2 / Peptidyl-prolyl cis-trans isomerase FKBP1B
Similarity search - Component
Biological speciesMus musculus (house mouse)
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.3 Å
AuthorsKobayashi, T. / Tsutsumi, A. / Kurebayashi, N. / Kodama, M. / Kikkawa, M. / Murayama, T. / Ogawa, H.
Funding support Japan, 6items
OrganizationGrant numberCountry
Japan Society for the Promotion of Science (JSPS)JP16H04748 Japan
Japan Society for the Promotion of Science (JSPS)JP19K07105 Japan
Japan Society for the Promotion of Science (JSPS)JP19H03404 Japan
Japan Society for the Promotion of Science (JSPS)JP21H02411 Japan
Japan Agency for Medical Research and Development (AMED)JP21am0101080 Japan
Japan Agency for Medical Research and Development (AMED)19ek0109202 Japan
CitationJournal: Nat Commun / Year: 2022
Title: Molecular basis for gating of cardiac ryanodine receptor explains the mechanisms for gain- and loss-of function mutations.
Authors: Takuya Kobayashi / Akihisa Tsutsumi / Nagomi Kurebayashi / Kei Saito / Masami Kodama / Takashi Sakurai / Masahide Kikkawa / Takashi Murayama / Haruo Ogawa /
Abstract: Cardiac ryanodine receptor (RyR2) is a large Ca release channel in the sarcoplasmic reticulum and indispensable for excitation-contraction coupling in the heart. RyR2 is activated by Ca and RyR2 ...Cardiac ryanodine receptor (RyR2) is a large Ca release channel in the sarcoplasmic reticulum and indispensable for excitation-contraction coupling in the heart. RyR2 is activated by Ca and RyR2 mutations are implicated in severe arrhythmogenic diseases. Yet, the structural basis underlying channel opening and how mutations affect the channel remains unknown. Here, we address the gating mechanism of RyR2 by combining high-resolution structures determined by cryo-electron microscopy with quantitative functional analysis of channels carrying various mutations in specific residues. We demonstrated two fundamental mechanisms for channel gating: interactions close to the channel pore stabilize the channel to prevent hyperactivity and a series of interactions in the surrounding regions is necessary for channel opening upon Ca binding. Mutations at the residues involved in the former and the latter mechanisms cause gain-of-function and loss-of-function, respectively. Our results reveal gating mechanisms of the RyR2 channel and alterations by pathogenic mutations at the atomic level.
History
DepositionOct 9, 2021Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Aug 10, 2022Provider: repository / Type: Initial release
Revision 1.1Jun 19, 2024Group: Data collection / Category: chem_comp_atom / chem_comp_bond

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Ryanodine receptor 2
G: Peptidyl-prolyl cis-trans isomerase FKBP1B
B: Ryanodine receptor 2
H: Peptidyl-prolyl cis-trans isomerase FKBP1B
C: Ryanodine receptor 2
I: Peptidyl-prolyl cis-trans isomerase FKBP1B
D: Ryanodine receptor 2
J: Peptidyl-prolyl cis-trans isomerase FKBP1B
hetero molecules


Theoretical massNumber of molelcules
Total (without water)2,210,81312
Polymers2,210,5528
Non-polymers2624
Water00
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein
Ryanodine receptor 2 / RYR-2 / RyR2 / Cardiac muscle ryanodine receptor / Cardiac muscle ryanodine receptor-calcium ...RYR-2 / RyR2 / Cardiac muscle ryanodine receptor / Cardiac muscle ryanodine receptor-calcium release channel / Type 2 ryanodine receptor


Mass: 533653.562 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Gene: Ryr2 / Cell line (production host): HEK293 / Production host: Homo sapiens (human) / References: UniProt: E9Q401
#2: Protein
Peptidyl-prolyl cis-trans isomerase FKBP1B / FK506-binding protein 1B / FKBP-1B /


Mass: 18984.316 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: FKBP1B / Production host: Escherichia coli (E. coli) / References: UniProt: P68106, peptidylprolyl isomerase
#3: Chemical
ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Zn / Feature type: SUBJECT OF INVESTIGATION
Has ligand of interestY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Recombinant RyR2 in the presence of EGTA / Type: CELL / Details: in complex with FKBP12.6 / Entity ID: #1-#2 / Source: RECOMBINANT
Source (natural)Organism: Mus musculus (house mouse)
Source (recombinant)Organism: Homo sapiens (human) / Cell: HEK293
Buffer solutionpH: 7.4
SpecimenEmbedding applied: YES / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
EM embeddingMaterial: buffer
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

Software
NameVersionClassificationNB
phenix.real_space_refine1.15.2_3472refinement
PHENIX1.15.2_3472refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 264902 / Symmetry type: POINT
RefinementStereochemistry target values: GeoStd + Monomer Library + CDL v1.2
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0023125876
ELECTRON MICROSCOPYf_angle_d0.5018170664
ELECTRON MICROSCOPYf_chiral_restr0.035319404
ELECTRON MICROSCOPYf_plane_restr0.00322256
ELECTRON MICROSCOPYf_dihedral_angle_d13.731575480

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