[English] 日本語
Yorodumi
- EMDB-22728: CryoEM structure of a trehalose monomycolate transporter in TMM l... -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: EMDB / ID: EMD-22728
TitleCryoEM structure of a trehalose monomycolate transporter in TMM lipid nanodiscs (form II)
Map data
Sample
  • Complex: RDN family transporter
    • Protein or peptide: Drug exporters of the RND superfamily-like protein
Function / homology
Function and homology information


phosphatidylethanolamine transfer activity / phosphatidylglycerol binding / trehalose transmembrane transporter activity / trehalose transport / mycolate cell wall layer assembly / cell wall biogenesis / diacylglycerol binding / cell pole / cell tip / mycolic acid biosynthetic process ...phosphatidylethanolamine transfer activity / phosphatidylglycerol binding / trehalose transmembrane transporter activity / trehalose transport / mycolate cell wall layer assembly / cell wall biogenesis / diacylglycerol binding / cell pole / cell tip / mycolic acid biosynthetic process / cardiolipin binding / cell septum / phosphatidylethanolamine binding / phospholipid transport / regulation of membrane potential / phosphatidylinositol binding / cell wall organization / response to xenobiotic stimulus / response to antibiotic / plasma membrane
Similarity search - Function
Membrane transport protein MMPL domain / MMPL family
Similarity search - Domain/homology
Trehalose monomycolate exporter MmpL3
Similarity search - Component
Biological speciesMycolicibacterium smegmatis (bacteria)
Methodsingle particle reconstruction / cryo EM / Resolution: 4.33 Å
AuthorsSu C-C
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID) United States
CitationJournal: PLoS Biol / Year: 2021
Title: Structures of the mycobacterial membrane protein MmpL3 reveal its mechanism of lipid transport.
Authors: Chih-Chia Su / Philip A Klenotic / Meng Cui / Meinan Lyu / Christopher E Morgan / Edward W Yu /
Abstract: The mycobacterial membrane protein large 3 (MmpL3) transporter is essential and required for shuttling the lipid trehalose monomycolate (TMM), a precursor of mycolic acid (MA)-containing trehalose ...The mycobacterial membrane protein large 3 (MmpL3) transporter is essential and required for shuttling the lipid trehalose monomycolate (TMM), a precursor of mycolic acid (MA)-containing trehalose dimycolate (TDM) and mycolyl arabinogalactan peptidoglycan (mAGP), in Mycobacterium species, including Mycobacterium tuberculosis and Mycobacterium smegmatis. However, the mechanism that MmpL3 uses to facilitate the transport of fatty acids and lipidic elements to the mycobacterial cell wall remains elusive. Here, we report 7 structures of the M. smegmatis MmpL3 transporter in its unbound state and in complex with trehalose 6-decanoate (T6D) or TMM using single-particle cryo-electron microscopy (cryo-EM) and X-ray crystallography. Combined with calculated results from molecular dynamics (MD) and target MD simulations, we reveal a lipid transport mechanism that involves a coupled movement of the periplasmic domain and transmembrane helices of the MmpL3 transporter that facilitates the shuttling of lipids to the mycobacterial cell wall.
History
DepositionSep 26, 2020-
Header (metadata) releaseSep 22, 2021-
Map releaseSep 22, 2021-
UpdateSep 22, 2021-
Current statusSep 22, 2021Processing site: RCSB / Status: Released

-
Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.14
  • Imaged by UCSF Chimera
  • Download
  • Surface view colored by height
  • Surface level: 0.14
  • Imaged by UCSF Chimera
  • Download
  • Surface view with fitted model
  • Atomic models: PDB-7k8d
  • Surface level: 0.14
  • Imaged by UCSF Chimera
  • Download
  • Simplified surface model + fitted atomic model
  • Atomic modelsPDB-7k8d
  • Imaged by Jmol
  • Download
Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_22728.png

Downloads & links

-
Map

FileDownload / File: emd_22728.map.gz / Format: CCP4 / Size: 3.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 1.04 Å
Density
Contour LevelBy AUTHOR: 0.14 / Movie #1: 0.14
Minimum - Maximum-1.1493037 - 6.2314253
Average (Standard dev.)-6.6840956e-12 (±0.13357836)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderZYX
Origin10885106
Dimensions8712090
Spacing9087120
CellA: 93.6 Å / B: 90.479996 Å / C: 124.799995 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.041.041.04
M x/y/z9087120
origin x/y/z0.0000.0000.000
length x/y/z93.60090.480124.800
α/β/γ90.00090.00090.000
start NX/NY/NZ10610885
NX/NY/NZ9087120
MAP C/R/S321
start NC/NR/NS85108106
NC/NR/NS1208790
D min/max/mean-1.1496.231-0.000

-
Supplemental data

-
Sample components

-
Entire : RDN family transporter

EntireName: RDN family transporter
Components
  • Complex: RDN family transporter
    • Protein or peptide: Drug exporters of the RND superfamily-like protein

-
Supramolecule #1: RDN family transporter

SupramoleculeName: RDN family transporter / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Mycolicibacterium smegmatis (bacteria) / Strain: MC2 155
Recombinant expressionOrganism: Escherichia coli (E. coli)

-
Macromolecule #1: Drug exporters of the RND superfamily-like protein

MacromoleculeName: Drug exporters of the RND superfamily-like protein / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Mycolicibacterium smegmatis (bacteria) / Strain: ATCC 700084 / mc(2)155
Molecular weightTheoretical: 109.509219 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MFAWWGRTVY QFRYIVIGVM VALCLGGGVY GISLGNHVTQ SGFYDEGSQS VAASLIGDEV YGRDRTSHVV AILTPPDDKK VTDKAWQKK VTEELDQVVK DHEDQIVGWV GWLKAPDTTD PTVSAMKTQD LRHTFISIPL QGDDDDEILK NYQVVEPELQ Q VNGGDIRL ...String:
MFAWWGRTVY QFRYIVIGVM VALCLGGGVY GISLGNHVTQ SGFYDEGSQS VAASLIGDEV YGRDRTSHVV AILTPPDDKK VTDKAWQKK VTEELDQVVK DHEDQIVGWV GWLKAPDTTD PTVSAMKTQD LRHTFISIPL QGDDDDEILK NYQVVEPELQ Q VNGGDIRL AGLNPLASEL TGTIGEDQKR AEVAAIPLVA VVLFFVFGTV IAAALPAIIG GLAIAGALGI MRLVAEFTPV HF FAQPVVT LIGLGIAIDY GLFIVSRFRE EIAEGYDTEA AVRRTVMTSG RTVVFSAVII VASSVPLLLF PQGFLKSITY AII ASVMLA AILSITVLAA ALAILGPRVD ALGVTTLLKI PFLANWQFSR RIIDWFAEKT QKTKTREEVE RGFWGRLVNV VMKR PIAFA APILVVMVLL IIPLGQLSLG GISEKYLPPD NAVRQSQEQF DKLFPGFRTE PLTLVMKRED GEPITDAQIA DMRAK ALTV SGFTDPDNDP EKMWKERPAN DSGSKDPSVR VIQNGLENRN DAAKKIDELR ALQPPHGIEV FVGGTPALEQ DSIHSL FDK LPLMALILIV TTTVLMFLAF GSVVLPIKAA LMSALTLGST MGILTWMFVD GHGSGLMNYT PQPLMAPMIG LIIAVIW GL STDYEVFLVS RMVEARERGM STAEAIRIGT ATTGRLITGA ALILAVVAGA FVFSDLVMMK YLAFGLLIAL LLDATIIR M FLVPAVMKLL GDDCWWAPRW MKRVQEKLGL GETELPDERK RPTVRESETD QRALVGVGAP PPPPRPHDPT HPAPEPVRP MPPMRSNAPS AAGTARISTP PQPPQPPQAP AQQAGDEPAT TRFAMARNAV RNAVNSAVHG GAGSAAAPTE RAPRPGGPAQ PPAPPQREE REIESWLGAL RGPAPAKNVP QPPAQPQRPS TDTTRAMPPQ GRPPAGPADR GNENAPTTAF SAQRPPNGGA P ADATTAIP TPPQREQEPS TEKLNTREDA PEDPETKRRG GGMSAQDLLR REGRL

-
Experimental details

-
Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

-
Sample preparation

Concentration0.2 mg/mL
BufferpH: 7.5
Component:
ConcentrationFormula
0.02 MTris
0.1 MNaClSodium chloride
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV

-
Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 40.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

-
Image processing

Initial angle assignmentType: NOT APPLICABLE
Final angle assignmentType: ANGULAR RECONSTITUTION
Final reconstructionResolution.type: BY AUTHOR / Resolution: 4.33 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 42286

+
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