[English] 日本語
Yorodumi
- PDB-6e2g: Cryo-EM structure of rat TRPV6 in complex with Calmodulin -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: PDB / ID: 6e2g
TitleCryo-EM structure of rat TRPV6 in complex with Calmodulin
Components
  • Calmodulin-1
  • Transient receptor potential cation channel subfamily V member 6
KeywordsMEMBRANE PROTEIN / TRPV6 / TRP channels / Calcium channels
Function / homology
Function and homology information


parathyroid hormone secretion / TRP channels / calcium-activated cation channel activity / calcium ion import / CaM pathway / Cam-PDE 1 activation / Sodium/Calcium exchangers / Calmodulin induced events / Reduction of cytosolic Ca++ levels / Activation of Ca-permeable Kainate Receptor ...parathyroid hormone secretion / TRP channels / calcium-activated cation channel activity / calcium ion import / CaM pathway / Cam-PDE 1 activation / Sodium/Calcium exchangers / Calmodulin induced events / Reduction of cytosolic Ca++ levels / Activation of Ca-permeable Kainate Receptor / CREB1 phosphorylation through the activation of CaMKII/CaMKK/CaMKIV cascasde / Loss of phosphorylation of MECP2 at T308 / CREB1 phosphorylation through the activation of Adenylate Cyclase / PKA activation / negative regulation of high voltage-gated calcium channel activity / CaMK IV-mediated phosphorylation of CREB / Glycogen breakdown (glycogenolysis) / negative regulation of calcium ion export across plasma membrane / organelle localization by membrane tethering / Activation of RAC1 downstream of NMDARs / regulation of cardiac muscle cell action potential / mitochondrion-endoplasmic reticulum membrane tethering / CLEC7A (Dectin-1) induces NFAT activation / autophagosome membrane docking / positive regulation of ryanodine-sensitive calcium-release channel activity / Negative regulation of NMDA receptor-mediated neuronal transmission / regulation of cell communication by electrical coupling involved in cardiac conduction / Unblocking of NMDA receptors, glutamate binding and activation / negative regulation of peptidyl-threonine phosphorylation / Synthesis of IP3 and IP4 in the cytosol / Phase 0 - rapid depolarisation / protein phosphatase activator activity / RHO GTPases activate PAKs / calcium ion import across plasma membrane / positive regulation of cyclic-nucleotide phosphodiesterase activity / positive regulation of phosphoprotein phosphatase activity / Long-term potentiation / Ion transport by P-type ATPases / Uptake and function of anthrax toxins / Calcineurin activates NFAT / Regulation of MECP2 expression and activity / catalytic complex / DARPP-32 events / detection of calcium ion / negative regulation of ryanodine-sensitive calcium-release channel activity / Smooth Muscle Contraction / RHO GTPases activate IQGAPs / regulation of cardiac muscle contraction / calcium channel inhibitor activity / cellular response to interferon-beta / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / calcium ion homeostasis / Protein methylation / voltage-gated potassium channel complex / Activation of AMPK downstream of NMDARs / eNOS activation / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / regulation of calcium-mediated signaling / positive regulation of protein dephosphorylation / titin binding / regulation of ryanodine-sensitive calcium-release channel activity / Tetrahydrobiopterin (BH4) synthesis, recycling, salvage and regulation / Ion homeostasis / positive regulation of protein autophosphorylation / sperm midpiece / calcium channel complex / substantia nigra development / adenylate cyclase activator activity / Ras activation upon Ca2+ influx through NMDA receptor / regulation of heart rate / protein serine/threonine kinase activator activity / sarcomere / FCERI mediated Ca+2 mobilization / FCGR3A-mediated IL10 synthesis / VEGFR2 mediated vascular permeability / positive regulation of peptidyl-threonine phosphorylation / Antigen activates B Cell Receptor (BCR) leading to generation of second messengers / VEGFR2 mediated cell proliferation / regulation of cytokinesis / Translocation of SLC2A4 (GLUT4) to the plasma membrane / spindle microtubule / calcium ion transmembrane transport / RAF activation / positive regulation of receptor signaling pathway via JAK-STAT / calcium channel activity / positive regulation of protein serine/threonine kinase activity / Transcriptional activation of mitochondrial biogenesis / Stimuli-sensing channels / spindle pole / cellular response to type II interferon / response to calcium ion / RAS processing / calcium-dependent protein binding / Inactivation, recovery and regulation of the phototransduction cascade / Signaling by RAF1 mutants / Signaling by moderate kinase activity BRAF mutants / Paradoxical activation of RAF signaling by kinase inactive BRAF / Signaling downstream of RAS mutants / calcium ion transport / G2/M transition of mitotic cell cycle
Similarity search - Function
Transient receptor potential cation channel subfamily V member 6 / Transient receptor potential cation channel subfamily V member 5/6 / Ankyrin repeats (many copies) / Transient receptor potential cation channel subfamily V / EF-hand domain pair / Ankyrin repeats (3 copies) / Ankyrin repeat profile. / Ankyrin repeat region circular profile. / ankyrin repeats / Ankyrin repeat ...Transient receptor potential cation channel subfamily V member 6 / Transient receptor potential cation channel subfamily V member 5/6 / Ankyrin repeats (many copies) / Transient receptor potential cation channel subfamily V / EF-hand domain pair / Ankyrin repeats (3 copies) / Ankyrin repeat profile. / Ankyrin repeat region circular profile. / ankyrin repeats / Ankyrin repeat / Ankyrin repeat-containing domain superfamily / EF-hand, calcium binding motif / EF-Hand 1, calcium-binding site / EF-hand calcium-binding domain. / EF-hand calcium-binding domain profile. / Ion transport domain / Ion transport protein / EF-hand domain / EF-hand domain pair
Similarity search - Domain/homology
Calmodulin-1 / Transient receptor potential cation channel subfamily V member 6
Similarity search - Component
Biological speciesRattus norvegicus (Norway rat)
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.6 Å
AuthorsSingh, A.K. / McGoldrick, L.L. / Sobolevsky, A.I.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)1R01CA206573-01A1 United States
CitationJournal: Sci Adv / Year: 2018
Title: Mechanism of calmodulin inactivation of the calcium-selective TRP channel TRPV6.
Authors: Appu K Singh / Luke L McGoldrick / Edward C Twomey / Alexander I Sobolevsky /
Abstract: Calcium (Ca) plays a major role in numerous physiological processes. Ca homeostasis is tightly controlled by ion channels, the aberrant regulation of which results in various diseases including ...Calcium (Ca) plays a major role in numerous physiological processes. Ca homeostasis is tightly controlled by ion channels, the aberrant regulation of which results in various diseases including cancers. Calmodulin (CaM)-mediated Ca-induced inactivation is an ion channel regulatory mechanism that protects cells against the toxic effects of Ca overload. We used cryo-electron microscopy to capture the epithelial calcium channel TRPV6 (transient receptor potential vanilloid subfamily member 6) inactivated by CaM. The TRPV6-CaM complex exhibits 1:1 stoichiometry; one TRPV6 tetramer binds both CaM lobes, which adopt a distinct head-to-tail arrangement. The CaM carboxyl-terminal lobe plugs the channel through a unique cation-π interaction by inserting the side chain of lysine K115 into a tetra-tryptophan cage at the pore's intracellular entrance. We propose a mechanism of CaM-mediated Ca-induced inactivation that can be explored for therapeutic design.
History
DepositionJul 11, 2018Deposition site: RCSB / Processing site: RCSB
Revision 1.0Aug 22, 2018Provider: repository / Type: Initial release
Revision 1.1Oct 24, 2018Group: Data collection / Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.identifier_ORCID
Revision 1.2Dec 18, 2019Group: Author supporting evidence / Other / Category: atom_sites / pdbx_audit_support
Item: _atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[2][2] ..._atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[2][2] / _atom_sites.fract_transf_matrix[3][3] / _pdbx_audit_support.funding_organization
Revision 1.3Mar 13, 2024Group: Data collection / Database references / Derived calculations
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / struct_conn
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_conn.ptnr2_label_seq_id

-
Structure visualization

Movie
  • Deposited structure unit
  • Imaged by Jmol
  • Download
  • Superimposition on EM map
  • EMDB-8962
  • Imaged by UCSF Chimera
  • Download
Movie viewer
Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

-
Assembly

Deposited unit
A: Transient receptor potential cation channel subfamily V member 6
B: Transient receptor potential cation channel subfamily V member 6
C: Transient receptor potential cation channel subfamily V member 6
D: Transient receptor potential cation channel subfamily V member 6
E: Calmodulin-1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)350,39111
Polymers350,1505
Non-polymers2406
Water0
1


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

-
Components

#1: Protein
Transient receptor potential cation channel subfamily V member 6 / TrpV6 / Calcium transport protein 1 / CaT1 / Epithelial calcium channel 2 / ECaC2


Mass: 83324.484 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Rattus norvegicus (Norway rat) / Gene: Trpv6 / Production host: Homo sapiens (human) / References: UniProt: Q9R186
#2: Protein Calmodulin-1 /


Mass: 16852.545 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CALM1, CALM, CAM, CAM1 / Production host: Escherichia coli K-12 (bacteria) / References: UniProt: P0DP23
#3: Chemical
ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 6 / Source method: obtained synthetically / Formula: Ca

-
Experimental details

-
Experiment

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

-
Sample preparation

ComponentName: TRPV6-Calmodulin / Type: COMPLEX / Entity ID: #1-#2 / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 8
Buffer component
IDConc.NameFormulaBuffer-ID
1150 mMsodium chlorideNaClSodium chloride1
220 mMTRISTRIS1
31
SpecimenConc.: 0.6 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportDetails: unidentified
VitrificationCryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K

-
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: SPOT SCAN
Electron lensMode: BRIGHT FIELDBright-field microscopy
Image recordingElectron dose: 47 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

-
Processing

SoftwareName: PHENIX / Version: 1.12_2829: / Classification: refinement
EM software
IDNameCategory
1RELIONparticle selection
2MotionCorr2particle selection
3cryoSPARCparticle selection
4Leginonimage acquisition
15cryoSPARC3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 507249
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 111593 / Num. of class averages: 1 / Symmetry type: POINT
Atomic model buildingSpace: REAL
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0121570
ELECTRON MICROSCOPYf_angle_d1.18329262
ELECTRON MICROSCOPYf_dihedral_angle_d11.10712869
ELECTRON MICROSCOPYf_chiral_restr0.0643321
ELECTRON MICROSCOPYf_plane_restr0.0073721

+
About Yorodumi

-
News

-
Feb 9, 2022. New format data for meta-information of EMDB entries

New format data for meta-information of EMDB entries

  • Version 3 of the EMDB header file is now the official format.
  • The previous official version 1.9 will be removed from the archive.

Related info.:EMDB header

External links:wwPDB to switch to version 3 of the EMDB data model

-
Aug 12, 2020. Covid-19 info

Covid-19 info

URL: https://pdbj.org/emnavi/covid19.php

New page: Covid-19 featured information page in EM Navigator.

Related info.:Covid-19 info / Mar 5, 2020. Novel coronavirus structure data

+
Mar 5, 2020. Novel coronavirus structure data

Novel coronavirus structure data

Related info.:Yorodumi Speices / Aug 12, 2020. Covid-19 info

External links:COVID-19 featured content - PDBj / Molecule of the Month (242)：Coronavirus Proteases

+
Jan 31, 2019. EMDB accession codes are about to change! (news from PDBe EMDB page)

EMDB accession codes are about to change! (news from PDBe EMDB page)

  • The allocation of 4 digits for EMDB accession codes will soon come to an end. Whilst these codes will remain in use, new EMDB accession codes will include an additional digit and will expand incrementally as the available range of codes is exhausted. The current 4-digit format prefixed with “EMD-” (i.e. EMD-XXXX) will advance to a 5-digit format (i.e. EMD-XXXXX), and so on. It is currently estimated that the 4-digit codes will be depleted around Spring 2019, at which point the 5-digit format will come into force.
  • The EM Navigator/Yorodumi systems omit the EMD- prefix.

Related info.:Q: What is EMD? / ID/Accession-code notation in Yorodumi/EM Navigator

External links:EMDB Accession Codes are Changing Soon! / Contact to PDBj

+
Jul 12, 2017. Major update of PDB

Major update of PDB

  • wwPDB released updated PDB data conforming to the new PDBx/mmCIF dictionary.
  • This is a major update changing the version number from 4 to 5, and with Remediation, in which all the entries are updated.
  • In this update, many items about electron microscopy experimental information are reorganized (e.g. em_software).
  • Now, EM Navigator and Yorodumi are based on the updated data.

External links:wwPDB Remediation / Enriched Model Files Conforming to OneDep Data Standards Now Available in the PDB FTP Archive

-
Yorodumi

Thousand views of thousand structures

  • Yorodumi is a browser for structure data from EMDB, PDB, SASBDB, etc.
  • This page is also the successor to EM Navigator detail page, and also detail information page/front-end page for Omokage search.
  • The word "yorodu" (or yorozu) is an old Japanese word meaning "ten thousand". "mi" (miru) is to see.

Related info.:EMDB / PDB / SASBDB / Comparison of 3 databanks / Yorodumi Search / Aug 31, 2016. New EM Navigator & Yorodumi / Yorodumi Papers / Jmol/JSmol / Function and homology information / Changes in new EM Navigator and Yorodumi

Read more