[English] 日本語
Yorodumi
- PDB-6l3v: The R15G mutant of human Cx31.3/GJC3 connexin hemichannel -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: PDB / ID: 6l3v
TitleThe R15G mutant of human Cx31.3/GJC3 connexin hemichannel
ComponentsGap junction gamma-3 protein
KeywordsMEMBRANE PROTEIN / Gap junction / Hemichannel / Hexamer / ATP release
Function / homology
Function and homology information


connexin complex / gap junction channel activity / myelination / sensory perception of sound / cell-cell signaling / myelin sheath / identical protein binding
Similarity search - Function
Gap junction channel protein cysteine-rich domain / Connexin / Connexin, N-terminal / Connexin, conserved site / Gap junction protein, cysteine-rich domain / Connexin, N-terminal domain superfamily / Connexin / Connexins signature 1. / Connexins signature 2. / Connexin homologues ...Gap junction channel protein cysteine-rich domain / Connexin / Connexin, N-terminal / Connexin, conserved site / Gap junction protein, cysteine-rich domain / Connexin, N-terminal domain superfamily / Connexin / Connexins signature 1. / Connexins signature 2. / Connexin homologues / Gap junction channel protein cysteine-rich domain / de novo design (two linked rop proteins) / Up-down Bundle / Mainly Alpha
Similarity search - Domain/homology
Gap junction gamma-3 protein
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.63 Å
AuthorsLee, H.J. / Jeong, H. / Ryu, B. / Hyun, J. / Woo, J.S.
Funding support Korea, Republic Of, 1items
OrganizationGrant numberCountry
National Research Foundation (Korea)NRF-2018R1C1B6004447 Korea, Republic Of
CitationJournal: Sci Adv / Year: 2020
Title: Cryo-EM structure of human Cx31.3/GJC3 connexin hemichannel.
Authors: Hyuk-Joon Lee / Hyeongseop Jeong / Jaekyung Hyun / Bumhan Ryu / Kunwoong Park / Hyun-Ho Lim / Jejoong Yoo / Jae-Sung Woo /
Abstract: Connexin family proteins assemble into hexameric channels called hemichannels/connexons, which function as transmembrane channels or dock together to form gap junction intercellular channels (GJIChs). ...Connexin family proteins assemble into hexameric channels called hemichannels/connexons, which function as transmembrane channels or dock together to form gap junction intercellular channels (GJIChs). We determined the cryo-electron microscopy structures of human connexin 31.3 (Cx31.3)/GJC3 hemichannels in the presence and absence of calcium ions and with a hearing-loss mutation R15G at 2.3-, 2.5-, and 2.6-Å resolutions, respectively. Compared with available structures of GJICh in open conformation, Cx31.3 hemichannel shows substantial structural changes of highly conserved regions in the connexin family, including opening of calcium ion-binding tunnels, reorganization of salt-bridge networks, exposure of lipid-binding sites, and collocation of amino-terminal helices at the cytoplasmic entrance. We also found that the hemichannel has a pore with a diameter of ~8 Å and selectively transports chloride ions. Our study provides structural insights into the permeant selectivity of Cx31.3 hemichannel.
History
DepositionOct 15, 2019Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Sep 9, 2020Provider: repository / Type: Initial release
Revision 1.1Sep 30, 2020Group: Database references / Category: citation / citation_author
Item: _citation.pdbx_database_id_PubMed / _citation_author.identifier_ORCID / _citation_author.name
Revision 1.2Oct 14, 2020Group: Database references / Category: citation / citation_author
Item: _citation.page_first / _citation.page_last / _citation_author.identifier_ORCID
Revision 1.3Nov 6, 2024Group: Data collection / Database references / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _em_admin.last_update / _pdbx_entry_details.has_protein_modification

-
Structure visualization

Movie
  • Deposited structure unit
  • Imaged by Jmol
  • Download
  • Superimposition on EM map
  • EMDB-0827
  • Imaged by UCSF Chimera
  • Download
Movie viewer
Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

-
Assembly

Deposited unit
A: Gap junction gamma-3 protein
B: Gap junction gamma-3 protein
C: Gap junction gamma-3 protein
D: Gap junction gamma-3 protein
E: Gap junction gamma-3 protein
F: Gap junction gamma-3 protein
hetero molecules


Theoretical massNumber of molelcules
Total (without water)193,46612
Polymers187,4356
Non-polymers6,0316
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area16190 Å2
ΔGint-131 kcal/mol
Surface area61330 Å2

-
Components

#1: Protein
Gap junction gamma-3 protein / Connexin-30.2 / Cx30.2 / Connexin-31.3 / Cx31.3 / Gap junction epsilon-1 protein


Mass: 31239.225 Da / Num. of mol.: 6 / Mutation: R15G
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: GJC3, GJE1 / Production host: Homo sapiens (human) / References: UniProt: Q8NFK1
#2: Chemical
ChemComp-LMN / Lauryl Maltose Neopentyl Glycol / 2,2-didecylpropane-1,3-bis-b-D-maltopyranoside


Mass: 1005.188 Da / Num. of mol.: 6 / Source method: obtained synthetically / Formula: C47H88O22 / Comment: detergent*YM
Has ligand of interestN
Has protein modificationY

-
Experimental details

-
Experiment

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

-
Sample preparation

ComponentName: The R15G mutant of human Cx31.3/GJC3 connexin hemichannel
Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

-
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: 45 e/Å2 / Film or detector model: FEI FALCON III (4k x 4k)

-
Processing

Software
NameVersionClassificationNB
phenix.real_space_refine1.14_3260refinement
PHENIX1.14_3260refinement
EM software
IDNameVersionCategory
1cryoSPARC2particle selection
2EPU1.11.1.50image acquisition
4Gctf1.06CTF correction
7Coot0.8.9.1model fitting
9PHENIX1.14model refinement
10RELION3initial Euler assignment
11cryoSPARC2final Euler assignment
12cryoSPARC2classification
13cryoSPARC23D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C6 (6 fold cyclic)
3D reconstructionResolution: 2.63 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 205646 / Symmetry type: POINT
RefinementStereochemistry target values: CDL v1.2
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00420256
ELECTRON MICROSCOPYf_angle_d0.800236642
ELECTRON MICROSCOPYf_chiral_restr0.03581572
ELECTRON MICROSCOPYf_plane_restr0.00462778
ELECTRON MICROSCOPYf_dihedral_angle_d19.39787872

+
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