[English] 日本語
Yorodumi
- EMDB-41185: Cryo-EM structure of Arabidopsis thaliana Bor1 in lipid nanodiscs... -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: EMDB / ID: EMD-41185
TitleCryo-EM structure of Arabidopsis thaliana Bor1 in lipid nanodiscs (protomer-focused refinement)
Map data
Sample
  • Complex: Arabidopsis thaliana Boron transporter 1
    • Protein or peptide: Boron transporter 1
  • Ligand: water
KeywordsBorate transporter / Bor1 / TRANSPORT PROTEIN
Function / homology
Function and homology information


borate transmembrane transport / response to boron-containing substance / cellular response to boron-containing substance levels / active borate transmembrane transporter activity / solute:inorganic anion antiporter activity / monoatomic anion transport / vacuolar membrane / endosome membrane / plasma membrane
Similarity search - Function
Bicarbonate transporter, eukaryotic / Bicarbonate transporter-like, transmembrane domain / HCO3- transporter integral membrane domain
Similarity search - Domain/homology
Biological speciesArabidopsis thaliana (thale cress)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.15 Å
AuthorsJiang Y / Jiang J
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Heart, Lung, and Blood Institute (NIH/NHLBI) United States
CitationJournal: Nat Commun / Year: 2024
Title: The Bor1 elevator transport cycle is subject to autoinhibition and activation.
Authors: Yan Jiang / Jiansen Jiang /
Abstract: Boron, essential for plant growth, necessitates precise regulation due to its potential toxicity. This regulation is achieved by borate transporters (BORs), which are homologous to the SLC4 family. ...Boron, essential for plant growth, necessitates precise regulation due to its potential toxicity. This regulation is achieved by borate transporters (BORs), which are homologous to the SLC4 family. The Arabidopsis thaliana Bor1 (AtBor1) transporter from clade I undergoes slow regulation through degradation and translational suppression, but its potential for fast regulation via direct activity modulation was unclear. Here, we combine cryo-electron microscopy, mutagenesis, and functional characterization to study AtBor1, revealing high-resolution structures of the dimer in one inactive and three active states. Our findings show that AtBor1 is regulated by two distinct mechanisms: an autoinhibitory domain at the carboxyl terminus obstructs the substrate pathway via conserved salt bridges, and phosphorylation of Thr410 allows interaction with a positively charged pocket at the cytosolic face, essential for borate transport. These results elucidate the molecular basis of AtBor1's activity regulation and highlight its role in fast boron level regulation in plants.
History
DepositionJul 6, 2023-
Header (metadata) releaseJul 10, 2024-
Map releaseJul 10, 2024-
UpdateJan 22, 2025-
Current statusJan 22, 2025Processing site: RCSB / Status: Released

-
Structure visualization

Supplemental images

emd_41185.png

Downloads & links

-
Map

FileDownload / File: emd_41185.map.gz / Format: CCP4 / Size: 216 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.83 Å/pix.
x 384 pix.
= 318.72 Å		0.83 Å/pix.
x 384 pix.
= 318.72 Å		0.83 Å/pix.
x 384 pix.
= 318.72 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.83 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.05
Minimum - Maximum-0.12337698 - 0.20310783
Average (Standard dev.)0.000046427827 (±0.003689727)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions384384384
Spacing384384384
CellA=B=C: 318.72 Å
α=β=γ: 90.0 °

-
Supplemental data

-
Half map: #2

Fileemd_41185_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

-
Half map: #1

Fileemd_41185_half_map_2.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

-
Sample components

-
Entire : Arabidopsis thaliana Boron transporter 1

EntireName: Arabidopsis thaliana Boron transporter 1
Components
  • Complex: Arabidopsis thaliana Boron transporter 1
    • Protein or peptide: Boron transporter 1
  • Ligand: water

-
Supramolecule #1: Arabidopsis thaliana Boron transporter 1

SupramoleculeName: Arabidopsis thaliana Boron transporter 1 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1
Source (natural)Organism: Arabidopsis thaliana (thale cress)

-
Macromolecule #1: Boron transporter 1

MacromoleculeName: Boron transporter 1 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Arabidopsis thaliana (thale cress)
Molecular weightTheoretical: 80.056992 KDa
Recombinant expressionOrganism: Saccharomyces cerevisiae (brewer's yeast)
SequenceString: MEETFVPFEG IKNDLKGRLM CYKQDWTGGF KAGFRILAPT TYIFFASAIP VISFGEQLER STDGVLTAVQ TLASTAICGM IHSIIGGQP LLILGVAEPT VIMYTFMFNF AKARPELGRD LFLAWSGWVC VWTALMLFVL AICGACSIIN RFTRVAGELF G LLIAMLFM ...String:
MEETFVPFEG IKNDLKGRLM CYKQDWTGGF KAGFRILAPT TYIFFASAIP VISFGEQLER STDGVLTAVQ TLASTAICGM IHSIIGGQP LLILGVAEPT VIMYTFMFNF AKARPELGRD LFLAWSGWVC VWTALMLFVL AICGACSIIN RFTRVAGELF G LLIAMLFM QQAIKGLVDE FRIPERENQK LKEFLPSWRF ANGMFALVLS FGLLLTGLRS RKARSWRYGT GWLRSLIADY GV PLMVLVW TGVSYIPAGD VPKGIPRRLF SPNPWSPGAY GNWTVVKEML DVPIVYIIGA FIPASMIAVL YYFDHSVASQ LAQ QKEFNL RKPSSYHYDL LLLGFLTLMC GLLGVPPSNG VIPQSPMHTK SLATLKYQLL RNRLVATARR SIKTNASLGQ LYDN MQEAY HHMQTPLVYQ QPQGLKELKE STIQATTFTG NLNAPVDETL FDIEKEIDDL LPVEVKEQRV SNLLQSTMVG GCVAA MPIL KMIPTSVLWG YFAFMAIESL PGNQFWERIL LLFTAPSRRF KVLEDYHATF VETVPFKTIA MFTLFQTTYL LICFGL TWI PIAGVMFPLM IMFLIPVRQY LLPRFFKGAH LQDLDAAEYE EAPALPFNLA AETEIGSTTS YPGDLEILDE VMTRSRG EF RHTSSPKVTS SSSTPVNNRS LSQVFSPRVS GIRLGQMSPR VVGNSPKPAS CGRSPLNQSS SNHHHHHHHH HH

UniProtKB: Boron transporter 1

-
Macromolecule #2: water

MacromoleculeName: water / type: ligand / ID: 2 / Number of copies: 88 / Formula: HOH
Molecular weightTheoretical: 18.015 Da
Chemical component information

ChemComp-HOH:
WATER

-
Experimental details

-
Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

-
Sample preparation

BufferpH: 6.5
VitrificationCryogen name: ETHANE

-
Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 55.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: OTHER
Electron opticsIllumination mode: OTHER / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.5 µm / Nominal defocus min: 0.8 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

+
Image processing

Startup modelType of model: NONE
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.15 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 853837
Initial angle assignmentType: NOT APPLICABLE
Final angle assignmentType: NOT APPLICABLE
FSC plot (resolution estimation)

+
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