+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-23885 | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Title | CryoEM Map of the NPR1-SA complex | ||||||||||||
Map data | |||||||||||||
Sample |
| ||||||||||||
Biological species | Arabidopsis thaliana (thale cress) | ||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.9 Å | ||||||||||||
Authors | Kumar S / Zhou Y / Dillard L / Borgnia M / Bartesaghi A / Zhou P | ||||||||||||
Funding support | United States, 3 items
| ||||||||||||
Citation | Journal: Nature / Year: 2022 Title: Structural basis of NPR1 in activating plant immunity. Authors: Shivesh Kumar / Raul Zavaliev / Qinglin Wu / Ye Zhou / Jie Cheng / Lucas Dillard / Jordan Powers / John Withers / Jinshi Zhao / Ziqiang Guan / Mario J Borgnia / Alberto Bartesaghi / Xinnian Dong / Pei Zhou / Abstract: NPR1 is a master regulator of the defence transcriptome induced by the plant immune signal salicylic acid. Despite the important role of NPR1 in plant immunity, understanding of its regulatory ...NPR1 is a master regulator of the defence transcriptome induced by the plant immune signal salicylic acid. Despite the important role of NPR1 in plant immunity, understanding of its regulatory mechanisms has been hindered by a lack of structural information. Here we report cryo-electron microscopy and crystal structures of Arabidopsis NPR1 and its complex with the transcription factor TGA3. Cryo-electron microscopy analysis reveals that NPR1 is a bird-shaped homodimer comprising a central Broad-complex, Tramtrack and Bric-à-brac (BTB) domain, a BTB and carboxyterminal Kelch helix bundle, four ankyrin repeats and a disordered salicylic-acid-binding domain. Crystal structure analysis reveals a unique zinc-finger motif in BTB for interacting with ankyrin repeats and mediating NPR1 oligomerization. We found that, after stimulation, salicylic-acid-induced folding and docking of the salicylic-acid-binding domain onto ankyrin repeats is required for the transcriptional cofactor activity of NPR1, providing a structural explanation for a direct role of salicylic acid in regulating NPR1-dependent gene expression. Moreover, our structure of the TGA3-NPR1-TGA3 complex, DNA-binding assay and genetic data show that dimeric NPR1 activates transcription by bridging two fatty-acid-bound TGA3 dimers to form an enhanceosome. The stepwise assembly of the NPR1-TGA complex suggests possible hetero-oligomeric complex formation with other transcription factors, revealing how NPR1 reprograms the defence transcriptome. | ||||||||||||
History |
|
-Structure visualization
Movie |
Movie viewer |
---|---|
Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_23885.map.gz | 98.5 MB | EMDB map data format | |
---|---|---|---|---|
Header (meta data) | emd-23885-v30.xml emd-23885.xml | 14.6 KB 14.6 KB | Display Display | EMDB header |
FSC (resolution estimation) | emd_23885_fsc.xml | 11.4 KB | Display | FSC data file |
Images | emd_23885.png | 84.4 KB | ||
Masks | emd_23885_msk_1.map | 125 MB | Mask map | |
Others | emd_23885_half_map_1.map.gz emd_23885_half_map_2.map.gz | 98.6 MB 98.4 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-23885 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-23885 | HTTPS FTP |
-Validation report
Summary document | emd_23885_validation.pdf.gz | 573 KB | Display | EMDB validaton report |
---|---|---|---|---|
Full document | emd_23885_full_validation.pdf.gz | 572.5 KB | Display | |
Data in XML | emd_23885_validation.xml.gz | 18.5 KB | Display | |
Data in CIF | emd_23885_validation.cif.gz | 24.4 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-23885 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-23885 | HTTPS FTP |
-Related structure data
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
---|
-Map
File | Download / File: emd_23885.map.gz / Format: CCP4 / Size: 125 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.065 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
|
-Supplemental data
-Mask #1
File | emd_23885_msk_1.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Projections & Slices |
| ||||||||||||
Density Histograms |
-Half map: #2
File | emd_23885_half_map_1.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Projections & Slices |
| ||||||||||||
Density Histograms |
-Half map: #1
File | emd_23885_half_map_2.map | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Projections & Slices |
| ||||||||||||
Density Histograms |
-Sample components
-Entire : NPR1 in the presence of SA
Entire | Name: NPR1 in the presence of SA |
---|---|
Components |
|
-Supramolecule #1: NPR1 in the presence of SA
Supramolecule | Name: NPR1 in the presence of SA / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
---|---|
Source (natural) | Organism: Arabidopsis thaliana (thale cress) |
Recombinant expression | Organism: Spodoptera frugiperda (fall armyworm) |
-Macromolecule #1: NPR1
Macromolecule | Name: NPR1 / type: protein_or_peptide / ID: 1 / Enantiomer: LEVO |
---|---|
Source (natural) | Organism: Arabidopsis thaliana (thale cress) |
Sequence | String: GPLMDTTIDG FADSYEISST SFVATDNTDS SIVYLAAEQV LTGPDVSALQ LLSNSFESVF DSPDDFYSDA KLVLSDGREV SFHRCVLSA RSSFFKSALA AAKKEKDSNN TAAVKLELKE IAKDYEVGFD SVVTVLAYVY SSRVRPPPKG VSECADENCC H VACRPAVD ...String: GPLMDTTIDG FADSYEISST SFVATDNTDS SIVYLAAEQV LTGPDVSALQ LLSNSFESVF DSPDDFYSDA KLVLSDGREV SFHRCVLSA RSSFFKSALA AAKKEKDSNN TAAVKLELKE IAKDYEVGFD SVVTVLAYVY SSRVRPPPKG VSECADENCC H VACRPAVD FMLEVLYLAF IFKIPELITL YQRHLLDVVD KVVIEDTLVI LKLANICGKA CMKLLDRCKE IIVKSNVDMV SL EKSLPEE LVKEIIDRRK ELGLEVPKVK KHVSNVHKAL DSDDIELVKL LLKEDHTNLD DACALHFAVA YCNVKTATDL LKL DLADVN HRNPRGYTVL HVAAMRKEPQ LILSLLEKGA SASEATLEGR TALMIAKQAT MAVECNNIPE QCKHSLKGRL CVEI LEQED KREQIPRDVP PSFAVAADEL KMTLLDLENR VALAQRLFPT EAQAAMEIAE MKGTCEFIVT SLEPDRLTGT KRTSP GVKI APFRILEEHQ SRLKALSKTV ELGKRFFPRC SAVLDQIMNC EDLTQLACGE DDTAEKRLQK KQRYMEIQET LKKAFS EDN LELGNSSLTD STSSTSKSTG GKRSNRKLSH RRRGGWSHPQ FEK |
-Experimental details
-Structure determination
Method | cryo EM |
---|---|
Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.5 |
---|---|
Grid | Model: UltrAuFoil / Material: GOLD / Mesh: 300 / Pretreatment - Type: PLASMA CLEANING |
Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
---|---|
Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 60.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |