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Open data
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Basic information
| Entry | Database: EMDB / ID: EMD-30401 | |||||||||
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| Title | Full-length Sarm1 in a self-inhibited state | |||||||||
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Keywords | NADase / ARM / SAM / TIR / HYDROLASE | |||||||||
| Function / homology | Function and homology informationextrinsic component of synaptic membrane / negative regulation of MyD88-independent toll-like receptor signaling pathway / MyD88-independent TLR4 cascade / NADP+ nucleosidase activity / Toll Like Receptor 3 (TLR3) Cascade / NAD+ catabolic process / NAD+ nucleosidase activity / regulation of synapse pruning / modification of postsynaptic structure / ADP-ribosyl cyclase/cyclic ADP-ribose hydrolase ...extrinsic component of synaptic membrane / negative regulation of MyD88-independent toll-like receptor signaling pathway / MyD88-independent TLR4 cascade / NADP+ nucleosidase activity / Toll Like Receptor 3 (TLR3) Cascade / NAD+ catabolic process / NAD+ nucleosidase activity / regulation of synapse pruning / modification of postsynaptic structure / ADP-ribosyl cyclase/cyclic ADP-ribose hydrolase / protein localization to mitochondrion / NAD+ nucleosidase activity, cyclic ADP-ribose generating / nervous system process / Hydrolases; Glycosylases; Hydrolysing N-glycosyl compounds / regulation of dendrite morphogenesis / response to glucose / response to axon injury / regulation of neuron apoptotic process / signaling adaptor activity / TRAF6-mediated induction of TAK1 complex within TLR4 complex / Activation of IRF3, IRF7 mediated by TBK1, IKKε (IKBKE) / IKK complex recruitment mediated by RIP1 / neuromuscular junction / nervous system development / microtubule / mitochondrial outer membrane / cell differentiation / axon / innate immune response / dendrite / synapse / glutamatergic synapse / cell surface / signal transduction / protein-containing complex / mitochondrion / identical protein binding / cytoplasm / cytosol Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human) | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 2.6 Å | |||||||||
Authors | Zhang Z / Jiang Y | |||||||||
Citation | Journal: Nature / Year: 2020Title: The NAD-mediated self-inhibition mechanism of pro-neurodegenerative SARM1. Authors: Yuefeng Jiang / Tingting Liu / Chia-Hsueh Lee / Qing Chang / Jing Yang / Zhe Zhang / ![]() Abstract: Pathological degeneration of axons disrupts neural circuits and represents one of the hallmarks of neurodegeneration. Sterile alpha and Toll/interleukin-1 receptor motif-containing protein 1 (SARM1) ...Pathological degeneration of axons disrupts neural circuits and represents one of the hallmarks of neurodegeneration. Sterile alpha and Toll/interleukin-1 receptor motif-containing protein 1 (SARM1) is a central regulator of this neurodegenerative process, and its Toll/interleukin-1 receptor (TIR) domain exerts its pro-neurodegenerative action through NADase activity. However, the mechanisms by which the activation of SARM1 is stringently controlled are unclear. Here we report the cryo-electron microscopy structures of full-length SARM1 proteins. We show that NAD is an unexpected ligand of the armadillo/heat repeat motifs (ARM) domain of SARM1. This binding of NAD to the ARM domain facilitated the inhibition of the TIR-domain NADase through the domain interface. Disruption of the NAD-binding site or the ARM-TIR interaction caused constitutive activation of SARM1 and thereby led to axonal degeneration. These findings suggest that NAD mediates self-inhibition of this central pro-neurodegenerative protein. | |||||||||
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Structure visualization
| Movie |
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| Structure viewer | EM map: SurfView Molmil Jmol/JSmol |
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Downloads & links
-EMDB archive
| Map data | emd_30401.map.gz | 195.8 MB | EMDB map data format | |
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| Header (meta data) | emd-30401-v30.xml emd-30401.xml | 10.9 KB 10.9 KB | Display Display | EMDB header |
| Images | emd_30401.png | 92.8 KB | ||
| Filedesc metadata | emd-30401.cif.gz | 5.4 KB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-30401 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-30401 | HTTPS FTP |
-Validation report
| Summary document | emd_30401_validation.pdf.gz | 558.2 KB | Display | EMDB validaton report |
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| Full document | emd_30401_full_validation.pdf.gz | 557.8 KB | Display | |
| Data in XML | emd_30401_validation.xml.gz | 6.9 KB | Display | |
| Data in CIF | emd_30401_validation.cif.gz | 8 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-30401 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-30401 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 7cm5MC ![]() 7cm6C ![]() 7cm7C M: atomic model generated by this map C: citing same article ( |
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| Similar structure data |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_30401.map.gz / Format: CCP4 / Size: 216 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.055 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 : Octamer of full-length Sarm1
| Entire | Name: Octamer of full-length Sarm1 |
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| Components |
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-Supramolecule #1: Octamer of full-length Sarm1
| Supramolecule | Name: Octamer of full-length Sarm1 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 640 kDa/nm |
-Macromolecule #1: NAD(+) hydrolase SARM1
| Macromolecule | Name: NAD(+) hydrolase SARM1 / type: protein_or_peptide / ID: 1 / Number of copies: 8 / Enantiomer: LEVO / EC number: ADP-ribosyl cyclase/cyclic ADP-ribose hydrolase |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 80.504289 KDa |
| Recombinant expression | Organism: Homo sapiens (human) |
| Sequence | String: MVLTLLLSAY KLCRFFAMSG PRPGAERLAV PGPDGGGGTG PWWAAGGRGP REVSPGAGTE VQDALERALP ELQQALSALK QAGGARAVG AGLAEVFQLV EEAWLLPAVG REVAQGLCDA IRLDGGLDLL LRLLQAPELE TRVQAARLLE QILVAENRDR V ARIGLGVI ...String: MVLTLLLSAY KLCRFFAMSG PRPGAERLAV PGPDGGGGTG PWWAAGGRGP REVSPGAGTE VQDALERALP ELQQALSALK QAGGARAVG AGLAEVFQLV EEAWLLPAVG REVAQGLCDA IRLDGGLDLL LRLLQAPELE TRVQAARLLE QILVAENRDR V ARIGLGVI LNLAKEREPV ELARSVAGIL EHMFKHSEET CQRLVAAGGL DAVLYWCRRT DPALLRHCAL ALGNCALHGG QA VQRRMVE KRAAEWLFPL AFSKEDELLR LHACLAVAVL ATNKEVEREV ERSGTLALVE PLVASLDPGR FARCLVDASD TSQ GRGPDD LQRLVPLLDS NRLEAQCIGA FYLCAEAAIK SLQGKTKVFS DIGAIQSLKR LVSYSTNGTK SALAKRALRL LGEE VPRPI LPSVPSWKEA EVQTWLQQIG FSKYCESFRE QQVDGDLLLR LTEEELQTDL GMKSGITRKR FFRELTELKT FANYS TCDR SNLADWLGSL DPRFRQYTYG LVSCGLDRSL LHRVSEQQLL EDCGIHLGVH RARILTAARE MLHSPLPCTG GKPSGD TPD VFISYRRNSG SQLASLLKVH LQLHGFSVFI DVEKLEAGKF EDKLIQSVMG ARNFVLVLSP GALDKCMQDH DCKDWVH KE IVTALSCGKN IVPIIDGFEW PEPQVLPEDM QAVLTFNGIK WSHEYQEATI EKIIRFLQGR SSRDSSAGSD TSLEGAAP M GPTSNSLEVL FQ UniProtKB: NAD(+) hydrolase SARM1 |
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Concentration | 3 mg/mL |
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| Buffer | pH: 8 |
| Grid | Model: Quantifoil R1.2/1.3 / Material: GOLD / Mesh: 400 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 30 sec. |
| Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 283 K / 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 K2 SUMMIT (4k x 4k) / Average electron dose: 57.5 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 |
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Keywords
Homo sapiens (human)
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