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Yorodumi- PDB-8p2l: A CHIMERA construct containing human SARM1 ARM and SAM domains an... -
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-Basic information
Entry | Database: PDB / ID: 8p2l | ||||||||||||
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Title | A CHIMERA construct containing human SARM1 ARM and SAM domains and C. elegans TIR domain. | ||||||||||||
Components | NAD(+) hydrolase SARM1,NAD(+) hydrolase tir-1 | ||||||||||||
Keywords | HYDROLASE / SARM1 / TIR-1 / C. elegans / neurodegeneration / cryo-EM / structural biology / NAD+ metabolism / axon Wallerian degeneration | ||||||||||||
Function / homology | Function and homology information serotonin biosynthetic process / negative regulation of MyD88-independent toll-like receptor signaling pathway / MyD88-independent TLR4 cascade / Toll Like Receptor 3 (TLR3) Cascade / NADP+ nucleosidase activity / NAD catabolic process / ADP-ribosyl cyclase/cyclic ADP-ribose hydrolase / NAD+ nucleosidase activity / protein localization to mitochondrion / NAD+ nucleotidase, cyclic ADP-ribose generating ...serotonin biosynthetic process / negative regulation of MyD88-independent toll-like receptor signaling pathway / MyD88-independent TLR4 cascade / Toll Like Receptor 3 (TLR3) Cascade / NADP+ nucleosidase activity / NAD catabolic process / ADP-ribosyl cyclase/cyclic ADP-ribose hydrolase / NAD+ nucleosidase activity / protein localization to mitochondrion / NAD+ nucleotidase, cyclic ADP-ribose generating / nervous system process / cell fate specification / Hydrolases; Glycosylases; Hydrolysing N-glycosyl compounds / regulation of dendrite morphogenesis / response to axon injury / defense response to fungus / response to glucose / regulation of neuron apoptotic process / signaling adaptor activity / axon cytoplasm / TRAF6-mediated induction of TAK1 complex within TLR4 complex / Activation of IRF3, IRF7 mediated by TBK1, IKKε (IKBKE) / IKK complex recruitment mediated by RIP1 / small GTPase binding / protein localization / cell-cell signaling / nervous system development / cell body / defense response to Gram-negative bacterium / mitochondrial outer membrane / microtubule / cell differentiation / defense response to bacterium / axon / negative regulation of gene expression / innate immune response / dendrite / synapse / positive regulation of gene expression / protein kinase binding / cell surface / signal transduction / positive regulation of transcription by RNA polymerase II / protein-containing complex / mitochondrion / identical protein binding / cytosol / cytoplasm Similarity search - Function | ||||||||||||
Biological species | Homo sapiens (human) | ||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.68 Å | ||||||||||||
Authors | Isupov, M.N. / Opatowsky, Y. | ||||||||||||
Funding support | Israel, United States, 3items
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Citation | Journal: Cell Rep / Year: 2023 Title: Structure-function analysis of ceTIR-1/hSARM1 explains the lack of Wallerian axonal degeneration in C. elegans. Authors: Tami Khazma / Atira Grossman / Julia Guez-Haddad / Chengye Feng / Hadas Dabas / Radhika Sain / Michal Weitman / Ran Zalk / Michail N Isupov / Marc Hammarlund / Michael Hons / Yarden Opatowsky / Abstract: Wallerian axonal degeneration (WD) does not occur in the nematode C. elegans, in contrast to other model animals. However, WD depends on the NADase activity of SARM1, a protein that is also expressed ...Wallerian axonal degeneration (WD) does not occur in the nematode C. elegans, in contrast to other model animals. However, WD depends on the NADase activity of SARM1, a protein that is also expressed in C. elegans (ceSARM/ceTIR-1). We hypothesized that differences in SARM between species might exist and account for the divergence in WD. We first show that expression of the human (h)SARM1, but not ceTIR-1, in C. elegans neurons is sufficient to confer axon degeneration after nerve injury. Next, we determined the cryoelectron microscopy structure of ceTIR-1 and found that, unlike hSARM1, which exists as an auto-inhibited ring octamer, ceTIR-1 forms a readily active 9-mer. Enzymatically, the NADase activity of ceTIR-1 is substantially weaker (10-fold higher Km) than that of hSARM1, and even when fully active, it falls short of consuming all cellular NAD. Our experiments provide insight into the molecular mechanisms and evolution of SARM orthologs and WD across species. | ||||||||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 8p2l.cif.gz | 928.1 KB | Display | PDBx/mmCIF format |
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PDB format | pdb8p2l.ent.gz | 708.7 KB | Display | PDB format |
PDBx/mmJSON format | 8p2l.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 8p2l_validation.pdf.gz | 1.6 MB | Display | wwPDB validaton report |
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Full document | 8p2l_full_validation.pdf.gz | 1.6 MB | Display | |
Data in XML | 8p2l_validation.xml.gz | 76.1 KB | Display | |
Data in CIF | 8p2l_validation.cif.gz | 111.2 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/p2/8p2l ftp://data.pdbj.org/pub/pdb/validation_reports/p2/8p2l | HTTPS FTP |
-Related structure data
Related structure data | 17369MC 8p2mC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
-Assembly
Deposited unit |
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Noncrystallographic symmetry (NCS) | NCS domain:
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