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- EMDB-37836: Cryo-EM structure of jasmonic acid transporter ABCG16 bound to JA -
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Open data
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Basic information
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Title | Cryo-EM structure of jasmonic acid transporter ABCG16 bound to JA | |||||||||
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![]() | jasmonate / transport / cryo-EM / ABC transporter / plant hormone / MEMBRANE PROTEIN | |||||||||
Function / homology | ![]() pollen wall assembly / ABC-type transporter activity / ATP hydrolysis activity / ATP binding / membrane Similarity search - Function | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.65 Å | |||||||||
![]() | Huang X / An N / Zhang X / Zhang P | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Cryo-EM structure and molecular mechanism of the jasmonic acid transporter ABCG16. Authors: Ning An / Xiaowei Huang / Zhao Yang / Minhua Zhang / Miaolian Ma / Fang Yu / Lianyan Jing / Boya Du / Yong-Fei Wang / Xue Zhang / Peng Zhang / ![]() Abstract: Jasmonates (JAs) are a class of oxylipin phytohormones including jasmonic acid (JA) and derivatives that regulate plant growth, development and biotic and abiotic stress. A number of transporters ...Jasmonates (JAs) are a class of oxylipin phytohormones including jasmonic acid (JA) and derivatives that regulate plant growth, development and biotic and abiotic stress. A number of transporters have been identified to be responsible for the cellular and subcellular translocation of JAs. However, the mechanistic understanding of how these transporters specifically recognize and transport JAs is scarce. Here we determined the cryogenic electron microscopy structure of JA exporter AtABCG16 in inward-facing apo, JA-bound and occluded conformations, and outward-facing post translocation conformation. AtABCG16 structure forms a homodimer, and each monomer contains a nucleotide-binding domain, a transmembrane domain and an extracellular domain. Structural analyses together with biochemical and plant physiological experiments revealed the molecular mechanism by which AtABCG16 specifically recognizes and transports JA. Structural analyses also revealed that AtABCG16 features a unique bifurcated substrate translocation pathway, which is composed of two independent substrate entrances, two substrate-binding pockets and a shared apoplastic cavity. In addition, residue Phe608 from each monomer is disclosed to function as a gate along the translocation pathway controlling the accessing of substrate JA from the cytoplasm or apoplast. Based on the structural and biochemical analyses, a working model of AtABCG16-mediated JA transport is proposed, which diversifies the molecular mechanisms of ABC transporters. | |||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 96.9 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 16.4 KB 16.4 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 9.9 KB | Display | ![]() |
Images | ![]() | 141.4 KB | ||
Filedesc metadata | ![]() | 5.9 KB | ||
Others | ![]() ![]() ![]() | 49.5 MB 94.8 MB 94.8 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 790.4 KB | Display | ![]() |
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Full document | ![]() | 790.1 KB | Display | |
Data in XML | ![]() | 18 KB | Display | |
Data in CIF | ![]() | 22.8 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8wtmMC ![]() 8wtnC ![]() 8wtoC ![]() 8wtpC M: atomic model generated by this map C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.83 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Additional map: unsharpened map
File | emd_37836_additional_1.map | ||||||||||||
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Annotation | unsharpened map | ||||||||||||
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Density Histograms |
-Half map: #2
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Density Histograms |
-Half map: #1
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Density Histograms |
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Sample components
-Entire : Homodimer of ABCG16
Entire | Name: Homodimer of ABCG16 |
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Components |
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-Supramolecule #1: Homodimer of ABCG16
Supramolecule | Name: Homodimer of ABCG16 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1 |
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Source (natural) | Organism: ![]() ![]() |
-Macromolecule #1: ABC transporter G family member 16
Macromolecule | Name: ABC transporter G family member 16 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 81.79243 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MSRILVEDDN ATPFHSMEII SSSLTLGQLL KNVSDVRKVE VGDETPVHEF FDRDGSSLDG DNDHLMRPVP FVLSFNNLTY NVSVRRKLD FHDLVPWRRT SFSKTKTLLD NISGETRDGE ILAVLGASGS GKSTLIDALA NRIAKGSLKG TVTLNGEALQ S RMLKVISA ...String: MSRILVEDDN ATPFHSMEII SSSLTLGQLL KNVSDVRKVE VGDETPVHEF FDRDGSSLDG DNDHLMRPVP FVLSFNNLTY NVSVRRKLD FHDLVPWRRT SFSKTKTLLD NISGETRDGE ILAVLGASGS GKSTLIDALA NRIAKGSLKG TVTLNGEALQ S RMLKVISA YVMQDDLLFP MLTVEETLMF AAEFRLPRSL PKSKKKLRVQ ALIDQLGIRN AAKTIIGDEG HRGISGGERR RV SIGIDII HDPIVLFLDE PTSGLDSTSA FMVVKVLKRI AESGSIIIMS IHQPSHRVLS LLDRLIFLSR GHTVFSGSPA SLP SFFAGF GNPIPENENQ TEFALDLIRE LEGSAGGTRG LVEFNKKWQE MKKQSNPQTL TPPASPNPNL TLKEAISASI SRGK LVSGG GGGSSVINHG GGTLAVPAFA NPFWIEIKTL TRRSILNSRR QPELLGMRLA TVIVTGFILA TVFWRLDNSP KGVQE RLGF FAFAMSTMFY TCADALPVFL QERYIFMRET AYNAYRRSSY VLSHAIVTFP SLIFLSLAFA VTTFWAVGLE GGLMGF LFY CLIILASFWS GSSFVTFLSG VVPHVMLGYT IVVAILAYFL LFSGFFINRD RIPQYWIWFH YLSLVKYPYE AVLQNEF SD PTECFVRGVQ LFDNSPLGEL TYGMKLRLLD SVSRSIGMRI SSSTCLTTGA DVLKQQGVTQ LSKWNCLLIT VGFGFLFR I LFYLCLLLGS KNKRR UniProtKB: ABC transporter G family member 16 |
-Macromolecule #2: {(1R,2R)-3-oxo-2-[(2Z)-pent-2-en-1-yl]cyclopentyl}acetic acid
Macromolecule | Name: {(1R,2R)-3-oxo-2-[(2Z)-pent-2-en-1-yl]cyclopentyl}acetic acid type: ligand / ID: 2 / Number of copies: 2 / Formula: JAA |
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Molecular weight | Theoretical: 210.27 Da |
Chemical component information | ![]() ChemComp-JAA: |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.5 |
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Grid | Model: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 400 |
Vitrification | Cryogen name: ETHANE / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 58.6 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.2 µm / Nominal defocus min: 1.5 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |