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- PDB-9ugj: Structure of SARM1 bound to SIR3-ADPR -

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Basic information

Entry
Database: PDB / ID: 9ugj
TitleStructure of SARM1 bound to SIR3-ADPR
ComponentsNAD(+) hydrolase SARM1
KeywordsHYDROLASE / NAD(+) hydrolase / cell death / apoptosis
Function / homology
Function and homology information


negative regulation of MyD88-independent toll-like receptor signaling pathway / extrinsic component of synaptic membrane / 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 ...negative regulation of MyD88-independent toll-like receptor signaling pathway / extrinsic component of synaptic membrane / 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 / signaling adaptor activity / TRAF6-mediated induction of TAK1 complex within TLR4 complex / regulation of neuron apoptotic process / 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 / synapse / dendrite / glutamatergic synapse / cell surface / signal transduction / protein-containing complex / mitochondrion / identical protein binding / cytoplasm / cytosol
Similarity search - Function
Sterile alpha and TIR motif-containing protein 1 / TIR domain / Toll - interleukin 1 - resistance / TIR domain profile. / Toll/interleukin-1 receptor homology (TIR) domain / Toll/interleukin-1 receptor homology (TIR) domain superfamily / SAM domain (Sterile alpha motif) / SAM domain profile. / Sterile alpha motif. / Sterile alpha motif domain ...Sterile alpha and TIR motif-containing protein 1 / TIR domain / Toll - interleukin 1 - resistance / TIR domain profile. / Toll/interleukin-1 receptor homology (TIR) domain / Toll/interleukin-1 receptor homology (TIR) domain superfamily / SAM domain (Sterile alpha motif) / SAM domain profile. / Sterile alpha motif. / Sterile alpha motif domain / Sterile alpha motif/pointed domain superfamily / Armadillo-like helical / Armadillo-type fold
Similarity search - Domain/homology
: / NAD(+) hydrolase SARM1
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.85 Å
AuthorsZhang, J. / Zheng, S. / Wang, X.
Funding support China, 1items
OrganizationGrant numberCountry
National Science Foundation (NSF, China) China
CitationJournal: To Be Published
Title: SARM1 Activation Promotes Axonal Degeneration Via a Two-Step Liquid-to-Solid Phase Transition
Authors: Zhang, W. / Zhou, Q. / Zhang, J. / Zheng, S. / Wang, X.
History
DepositionApr 12, 2025Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Feb 18, 2026Provider: repository / Type: Initial release
Revision 1.0Feb 18, 2026Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Feb 18, 2026Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Feb 18, 2026Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Feb 18, 2026Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Feb 18, 2026Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: NAD(+) hydrolase SARM1
B: NAD(+) hydrolase SARM1
C: NAD(+) hydrolase SARM1
D: NAD(+) hydrolase SARM1
E: NAD(+) hydrolase SARM1
F: NAD(+) hydrolase SARM1
G: NAD(+) hydrolase SARM1
H: NAD(+) hydrolase SARM1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)677,67516
Polymers671,5268
Non-polymers6,1488
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein
NAD(+) hydrolase SARM1 / NADase SARM1 / hSARM1 / NADP(+) hydrolase SARM1 / Sterile alpha and Armadillo repeat protein / ...NADase SARM1 / hSARM1 / NADP(+) hydrolase SARM1 / Sterile alpha and Armadillo repeat protein / Sterile alpha and TIR motif-containing protein 1 / Sterile alpha motif domain-containing protein 2 / MyD88-5 / SAM domain-containing protein 2 / Tir-1 homolog / HsTIR


Mass: 83940.797 Da / Num. of mol.: 8
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SARM1, KIAA0524, SAMD2, SARM / Cell (production host): HEK293T / Cell line (production host): HEK293T / Production host: Homo sapiens (human)
References: UniProt: Q6SZW1, ADP-ribosyl cyclase/cyclic ADP-ribose hydrolase, Hydrolases; Glycosylases; Hydrolysing N-glycosyl compounds
#2: Chemical
ChemComp-A1EO4 / [[(2~{S},3~{R},4~{S},5~{S})-5-(4-azanylimidazo[4,5-d]pyridazin-1-yl)-3,4-bis(oxidanyl)oxolan-2-yl]methoxy-oxidanyl-phosphoryl] [(2~{R},3~{S},4~{R},5~{R})-5-[4-methyl-3-(2-oxidanylidene-3~{H}-1,3-benzoxazol-6-yl)pyridin-1-ium-1-yl]-3,4-bis(oxidanyl)oxolan-2-yl]methyl hydrogen phosphate


Mass: 768.539 Da / Num. of mol.: 8 / Source method: obtained synthetically / Formula: C28H32N7O15P2 / Feature type: SUBJECT OF INVESTIGATION
Has ligand of interestY
Has protein modificationN

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: SARM1 / Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 3000 nm / Nominal defocus min: 700 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

EM softwareName: PHENIX / Version: 1.19.2_4158 / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.85 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 28854 / Symmetry type: POINT
RefinementHighest resolution: 3.85 Å
Stereochemistry target values: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS)
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0028779
ELECTRON MICROSCOPYf_angle_d0.512059
ELECTRON MICROSCOPYf_dihedral_angle_d6.1361156
ELECTRON MICROSCOPYf_chiral_restr0.0411407
ELECTRON MICROSCOPYf_plane_restr0.0031462

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