Crystal structure of the TIR domain H685A mutant from human SARM1

Experimental Data Snapshot

  • Resolution: 3.03 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.190 

wwPDB Validation   3D Report Full Report

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NAD+cleavage activity by animal and plant TIR domains in cell death pathways.

Horsefield, S.Burdett, H.Zhang, X.Manik, M.K.Shi, Y.Chen, J.Qi, T.Gilley, J.Lai, J.S.Rank, M.X.Casey, L.W.Gu, W.Ericsson, D.J.Foley, G.Hughes, R.O.Bosanac, T.von Itzstein, M.Rathjen, J.P.Nanson, J.D.Boden, M.Dry, I.B.Williams, S.J.Staskawicz, B.J.Coleman, M.P.Ve, T.Dodds, P.N.Kobe, B.

(2019) Science 365: 793-799

  • DOI: https://doi.org/10.1126/science.aax1911
  • Primary Citation of Related Structures:  
    6O0Q, 6O0R, 6O0S, 6O0T, 6O0U, 6O0V, 6O0W, 6O1B

  • PubMed Abstract: 

    SARM1 (sterile alpha and TIR motif containing 1) is responsible for depletion of nicotinamide adenine dinucleotide in its oxidized form (NAD + ) during Wallerian degeneration associated with neuropathies. Plant nucleotide-binding leucine-rich repeat (NLR) immune receptors recognize pathogen effector proteins and trigger localized cell death to restrict pathogen infection. Both processes depend on closely related Toll/interleukin-1 receptor (TIR) domains in these proteins, which, as we show, feature self-association-dependent NAD + cleavage activity associated with cell death signaling. We further show that SARM1 SAM (sterile alpha motif) domains form an octamer essential for axon degeneration that contributes to TIR domain enzymatic activity. The crystal structures of ribose and NADP + (the oxidized form of nicotinamide adenine dinucleotide phosphate) complexes of SARM1 and plant NLR RUN1 TIR domains, respectively, reveal a conserved substrate binding site. NAD + cleavage by TIR domains is therefore a conserved feature of animal and plant cell death signaling pathways.

  • Organizational Affiliation

    School of Chemistry and Molecular Biosciences, Institute for Molecular Bioscience and Australian Infectious Diseases Research Centre, University of Queensland, Brisbane, QLD 4072, Australia.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Sterile alpha and TIR motif-containing protein 1
A, B
144Homo sapiensMutation(s): 1 
UniProt & NIH Common Fund Data Resources
Find proteins for Q6SZW1 (Homo sapiens)
Explore Q6SZW1 
Go to UniProtKB:  Q6SZW1
GTEx:  ENSG00000004139 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ6SZW1
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 3.03 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.190 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 32.997α = 90
b = 71.309β = 97.52
c = 57.242γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
Aimlessdata scaling

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Health and Medical Research Council (NHMRC, Australia)Australia1107804
National Health and Medical Research Council (NHMRC, Australia)Australia1160570
National Health and Medical Research Council (NHMRC, Australia)Australia1071659
National Health and Medical Research Council (NHMRC, Australia)Australia1108859
Australian Research Council (ARC)AustraliaDP160102244
Australian Research Council (ARC)AustraliaDP190102526

Revision History  (Full details and data files)

  • Version 1.0: 2019-09-04
    Type: Initial release
  • Version 1.1: 2020-01-01
    Changes: Author supporting evidence
  • Version 1.2: 2024-03-13
    Changes: Data collection, Database references