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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-20479 | |||||||||
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Title | Human TRPM2 bound to ADPR | |||||||||
![]() | human TRPM2 bound with ADPR | |||||||||
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![]() | TRPM2 channel / ADPR / TRANSPORT PROTEIN | |||||||||
Function / homology | ![]() cellular response to purine-containing compound / mono-ADP-D-ribose binding / manganese ion transmembrane transporter activity / zinc ion transmembrane transport / dendritic cell differentiation / response to purine-containing compound / ligand-gated calcium channel activity / regulation of filopodium assembly / cellular response to temperature stimulus / response to hydroperoxide ...cellular response to purine-containing compound / mono-ADP-D-ribose binding / manganese ion transmembrane transporter activity / zinc ion transmembrane transport / dendritic cell differentiation / response to purine-containing compound / ligand-gated calcium channel activity / regulation of filopodium assembly / cellular response to temperature stimulus / response to hydroperoxide / TRP channels / dendritic cell chemotaxis / sodium channel activity / calcium ion transmembrane import into cytosol / temperature homeostasis / calcium ion import across plasma membrane / intracellularly gated calcium channel activity / tertiary granule membrane / ficolin-1-rich granule membrane / monoatomic cation channel activity / specific granule membrane / release of sequestered calcium ion into cytosol / cellular response to calcium ion / cell projection / regulation of actin cytoskeleton organization / calcium ion transmembrane transport / cytoplasmic vesicle membrane / calcium channel activity / cellular response to hydrogen peroxide / calcium ion transport / response to heat / perikaryon / protein homotetramerization / lysosome / lysosomal membrane / calcium ion binding / Neutrophil degranulation / plasma membrane Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 4.4 Å | |||||||||
![]() | Du J / Lu W / Huang Y | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Ligand recognition and gating mechanism through three ligand-binding sites of human TRPM2 channel. Authors: Yihe Huang / Becca Roth / Wei Lü / Juan Du / ![]() Abstract: TRPM2 is critically involved in diverse physiological processes including core temperature sensing, apoptosis, and immune response. TRPM2's activation by Ca and ADP ribose (ADPR), an NAD-metabolite ...TRPM2 is critically involved in diverse physiological processes including core temperature sensing, apoptosis, and immune response. TRPM2's activation by Ca and ADP ribose (ADPR), an NAD-metabolite produced under oxidative stress and neurodegenerative conditions, suggests a role in neurological disorders. We provide a central concept between triple-site ligand binding and the channel gating of human TRPM2. We show consecutive structural rearrangements and channel activation of TRPM2 induced by binding of ADPR in two indispensable locations, and the binding of Ca in the transmembrane domain. The 8-Br-cADPR-an antagonist of cADPR-binds only to the MHR1/2 domain and inhibits TRPM2 by stabilizing the channel in an apo-like conformation. We conclude that MHR1/2 acts as a orthostatic ligand-binding site for TRPM2. The NUDT9-H domain binds to a second ADPR to assist channel activation in vertebrates, but not necessary in invertebrates. Our work provides insights into the gating mechanism of human TRPM2 and its pharmacology. | |||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 75.5 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 12.8 KB 12.8 KB | Display Display | ![]() |
Images | ![]() | 237 KB | ||
Filedesc metadata | ![]() | 6.2 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6purMC ![]() 6puoC ![]() 6pusC ![]() 6puuC C: citing same article ( M: atomic model generated by this map |
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Similar structure data |
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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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Annotation | human TRPM2 bound with ADPR | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.074 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
-Entire : human TRPM2
Entire | Name: human TRPM2 |
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Components |
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-Supramolecule #1: human TRPM2
Supramolecule | Name: human TRPM2 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1 |
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Source (natural) | Organism: ![]() |
-Macromolecule #1: Transient receptor potential cation channel subfamily M member 2
Macromolecule | Name: Transient receptor potential cation channel subfamily M member 2 type: protein_or_peptide / ID: 1 / Number of copies: 4 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 172.280062 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: GSGGRATMEP SALRKAGSEQ EEGFEGLPRR VTDLGMVSNL RRSNSSLFKS WRLQCPFGNN DKQESLSSWI PENIKKKECV YFVESSKLS DAGKVVCQCG YTHEQHLEEA TKPHTFQGTQ WDPKKHVQEM PTDAFGDIVF TGLSQKVKKY VRVSQDTPSS V IYHLMTQH ...String: GSGGRATMEP SALRKAGSEQ EEGFEGLPRR VTDLGMVSNL RRSNSSLFKS WRLQCPFGNN DKQESLSSWI PENIKKKECV YFVESSKLS DAGKVVCQCG YTHEQHLEEA TKPHTFQGTQ WDPKKHVQEM PTDAFGDIVF TGLSQKVKKY VRVSQDTPSS V IYHLMTQH WGLDVPNLLI SVTGGAKNFN MKPRLKSIFR RGLVKVAQTT GAWIITGGSH TGVMKQVGEA VRDFSLSSSY KE GELITIG VATWGTVHRR EGLIHPTGSF PAEYILDEDG QGNLTCLDSN HSHFILVDDG THGQYGVEIP LRTRLEKFIS EQT KERGGV AIKIPIVCVV LEGGPGTLHT IDNATTNGTP CVVVEGSGRV ADVIAQVANL PVSDITISLI QQKLSVFFQE MFET FTESR IVEWTKKIQD IVRRRQLLTV FREGKDGQQD VDVAILQALL KASRSQDHFG HENWDHQLKL AVAWNRVDIA RSEIF MDEW QWKPSDLHPT MTAALISNKP EFVKLFLENG VQLKEFVTWD TLLYLYENLD PSCLFHSKLQ KVLVEDPERP ACAPAA PRL QMHHVAQVLR ELLGDFTQPL YPRPRHNDRL RLLLPVPHVK LNVQGVSLRS LYKRSSGHVT FTMDPIRDLL IWAIVQN RR ELAGIIWAQS QDCIAAALAC SKILKELSKE EEDTDSSEEM LALAEEYEHR AIGVFTECYR KDEERAQKLL TRVSEAWG K TTCLQLALEA KDMKFVSHGG IQAFLTKVWW GQLSVDNGLW RVTLCMLAFP LLLTGLISFR EKRLQDVGTP AARARAFFT APVVVFHLNI LSYFAFLCLF AYVLMVDFQP VPSWCECAIY LWLFSLVCEE MRQLFYDPDE CGLMKKAALY FSDFWNKLDV GAILLFVAG LTCRLIPATL YPGRVILSLD FILFCLRLMH IFTISKTLGP KIIIVKRMMK DVFFFLFLLA VWVVSFGVAK Q AILIHNER RVDWLFRGAV YHSYLTIFGQ IPGYIDGVNF NPEHCSPNGT DPYKPKCPES DATQQRPAFP EWLTVLLLCL YL LFTNILL LNLLIAMFNY TFQQVQEHTD QIWKFQRHDL IEEYHGRPAA PPPFILLSHL QLFIKRVVLK TPAKRHKQLK NKL EKNEEA ALLSWEIYLK ENYLQNRQFQ QKQRPEQKIE DISNKVDAMV DLLDLDPLKR SGSMEQRLAS LEEQVAQTAQ ALHW IVRTL RASGFSSEAD VPTLASQKAA EEPDAEPGGR KKTEEPGDSY HVNARHLLYP NCPVTRFPVP NEKVPWETEF LIYDP PFYT AERKDAAAMD PMGDTLEPLS TIQYNVVDGL RDRRSFHGPY TVQAGLPLNP MGRTGLRGRG SLSCFGPNHT LYPMVT RWR RNEDGAICRK SIKKMLEVLV VKLPLSEHWA LPGGSREPGE MLPRKLKRIL RQEHWPSFEN LLKCGMEVYK GYMDDPR NT DNAWIETVAV SVHFQDQNDV ELNRLNSNLH ACDSGASIRW QVVDRRIPLY ANHKTLLQKA AAEFGAHYFE UniProtKB: Transient receptor potential cation channel subfamily M member 2 |
-Macromolecule #2: ADENOSINE-5-DIPHOSPHORIBOSE
Macromolecule | Name: ADENOSINE-5-DIPHOSPHORIBOSE / type: ligand / ID: 2 / Number of copies: 8 / Formula: APR |
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Molecular weight | Theoretical: 559.316 Da |
Chemical component information | ![]() ChemComp-APR: |
-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: 8 |
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Grid | Details: unspecified |
Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Digitization - Frames/image: 1-40 / Average exposure time: 8.0 sec. / Average electron dose: 6.8 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | C2 aperture diameter: 100.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.5 µm / Nominal defocus min: 1.0 µm |
Sample stage | Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Startup model | Type of model: OTHER / Details: cryosparc |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 4.4 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3) / Number images used: 117350 |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3) |
Final angle assignment | Type: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3) |
-Atomic model buiding 1
Refinement | Space: REAL / Protocol: AB INITIO MODEL |
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Output model | ![]() PDB-6pur: |