[English] 日本語
Yorodumi
- PDB-6e1o: afTMEM16 reconstituted in nanodiscs in the presence of Ca2+ and c... -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: PDB / ID: 6e1o
TitleafTMEM16 reconstituted in nanodiscs in the presence of Ca2+ and ceramide 24:0
ComponentsPlasma membrane channel protein (Aqy1), putative
KeywordsLIPID TRANSPORT / scramblase / Ca2+-activated / membrane-reorganization
Function / homology
Function and homology information


phospholipid scramblase activity / cortical endoplasmic reticulum / phospholipid translocation / chloride channel activity / voltage-gated calcium channel activity / chloride transmembrane transport / monoatomic ion transmembrane transport / membrane
Similarity search - Function
Alpha-beta plait domain in TMEM16 lipid scramblase / Anoctamin / Calcium-activated chloride channel
Similarity search - Domain/homology
Octadecane / DECANE / DODECANE / HEXANE / Plasma membrane channel protein (Aqy1), putative
Similarity search - Component
Biological speciesNeosartorya fumigata (mold)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.59 Å
AuthorsFalzone, M.E. / Accardi, A.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)5R01GM106717 United States
CitationJournal: Elife / Year: 2019
Title: Structural basis of Ca-dependent activation and lipid transport by a TMEM16 scramblase.
Authors: Maria E Falzone / Jan Rheinberger / Byoung-Cheol Lee / Thasin Peyear / Linda Sasset / Ashleigh M Raczkowski / Edward T Eng / Annarita Di Lorenzo / Olaf S Andersen / Crina M Nimigean / Alessio Accardi /
Abstract: The lipid distribution of plasma membranes of eukaryotic cells is asymmetric and phospholipid scramblases disrupt this asymmetry by mediating the rapid, nonselective transport of lipids down their ...The lipid distribution of plasma membranes of eukaryotic cells is asymmetric and phospholipid scramblases disrupt this asymmetry by mediating the rapid, nonselective transport of lipids down their concentration gradients. As a result, phosphatidylserine is exposed to the outer leaflet of membrane, an important step in extracellular signaling networks controlling processes such as apoptosis, blood coagulation, membrane fusion and repair. Several TMEM16 family members have been identified as Ca-activated scramblases, but the mechanisms underlying their Ca-dependent gating and their effects on the surrounding lipid bilayer remain poorly understood. Here, we describe three high-resolution cryo-electron microscopy structures of a fungal scramblase from , afTMEM16, reconstituted in lipid nanodiscs. These structures reveal that Ca-dependent activation of the scramblase entails global rearrangement of the transmembrane and cytosolic domains. These structures, together with functional experiments, suggest that activation of the protein thins the membrane near the transport pathway to facilitate rapid transbilayer lipid movement.
History
DepositionJul 10, 2018Deposition site: RCSB / Processing site: RCSB
Revision 1.0Feb 6, 2019Provider: repository / Type: Initial release
Revision 1.1Dec 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 1.2Mar 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.pdbx_dist_value / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id

-
Structure visualization

Movie
  • Deposited structure unit
  • Imaged by Jmol
  • Download
  • Superimposition on EM map
  • EMDB-8959
  • Imaged by UCSF Chimera
  • Download
Movie viewer
Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

-
Assembly

Deposited unit
B: Plasma membrane channel protein (Aqy1), putative
A: Plasma membrane channel protein (Aqy1), putative
hetero molecules


Theoretical massNumber of molelcules
Total (without water)171,72320
Polymers169,2342
Non-polymers2,48918
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: homology, gel filtration microscopy
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
2


  • Idetical with deposited unit
  • defined by software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area10500 Å2
ΔGint-56 kcal/mol
Surface area61400 Å2
MethodPISA

-
Components

-
Protein , 1 types, 2 molecules BA

#1: Protein Plasma membrane channel protein (Aqy1), putative


Mass: 84616.859 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Neosartorya fumigata (strain ATCC MYA-4609 / Af293 / CBS 101355 / FGSC A1100) (mold)
Strain: ATCC MYA-4609 / Af293 / CBS 101355 / FGSC A1100 / Gene: AFUA_4G02970 / Production host: Saccharomyces cerevisiae (brewer's yeast) / References: UniProt: Q4WA18

-
Non-polymers , 5 types, 18 molecules

#2: Chemical
ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Ca
#3: Chemical
ChemComp-D12 / DODECANE / Dodecane


Mass: 170.335 Da / Num. of mol.: 8 / Source method: obtained synthetically / Formula: C12H26
#4: Chemical ChemComp-D10 / DECANE / Decane


Mass: 142.282 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C10H22
#5: Chemical ChemComp-8K6 / Octadecane / N-Octadecane / Octadecane


Mass: 254.494 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C18H38
#6: Chemical ChemComp-HEX / HEXANE / Hexane


Mass: 86.175 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C6H14

-
Experimental details

-
Experiment

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

-
Sample preparation

ComponentName: afTMEM16 reconstituted in nanodiscs in the presence of Ca2+ and ceramide 24:0
Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Molecular weightValue: 168 kDa/nm / Experimental value: NO
Source (natural)Organism: Aspergillus fumigatus (mold)
Source (recombinant)Organism: Saccharomyces cerevisiae (brewer's yeast)
Buffer solutionpH: 8
SpecimenConc.: 7 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Details: afTMEM16 reconstituted in nanodiscs in the absence of Ca2+
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 288 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: OTHER
Electron lensMode: BRIGHT FIELDBright-field microscopy
Image recordingElectron dose: 62.75 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of grids imaged: 1

-
Processing

Software
NameVersionClassificationNB
phenix.real_space_refine1.13_2998refinement
PHENIX1.13_2998refinement
EM software
IDNameVersionCategory
2Leginonimage acquisition
4CTFFIND4CTF correction
9PHENIXmodel refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.59 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 24602 / Symmetry type: POINT
RefinementStereochemistry target values: GeoStd + Monomer Library
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.007810025
ELECTRON MICROSCOPYf_angle_d1.069113540
ELECTRON MICROSCOPYf_chiral_restr0.06231512
ELECTRON MICROSCOPYf_plane_restr0.0081662
ELECTRON MICROSCOPYf_dihedral_angle_d13.7345926

+
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