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- EMDB-33312: Cryo-EM structure of CopC-CaM-caspase-3 with ADPR-deacylization -
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Open data
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Basic information
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Title | Cryo-EM structure of CopC-CaM-caspase-3 with ADPR-deacylization | |||||||||
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![]() | type III secretion system / Chromobacterium violaceum / caspase-3 / new PTM / programmed cell deathA / DP-ribosylation / ADPR-deacylization / TOXIN | |||||||||
Function / homology | ![]() Lyases; Carbon-nitrogen lyases; Other carbon-nitrogen lyases / ADP-riboxanase activity / symbiont-mediated perturbation of host programmed cell death / caspase-3 / Stimulation of the cell death response by PAK-2p34 / phospholipase A2 activator activity / anterior neural tube closure / intrinsic apoptotic signaling pathway in response to osmotic stress / leukocyte apoptotic process / positive regulation of pyroptotic inflammatory response ...Lyases; Carbon-nitrogen lyases; Other carbon-nitrogen lyases / ADP-riboxanase activity / symbiont-mediated perturbation of host programmed cell death / caspase-3 / Stimulation of the cell death response by PAK-2p34 / phospholipase A2 activator activity / anterior neural tube closure / intrinsic apoptotic signaling pathway in response to osmotic stress / leukocyte apoptotic process / positive regulation of pyroptotic inflammatory response / glial cell apoptotic process / NADE modulates death signalling / luteolysis / response to cobalt ion / cellular response to staurosporine / death-inducing signaling complex / cyclin-dependent protein serine/threonine kinase inhibitor activity / response to anesthetic / Apoptosis induced DNA fragmentation / Apoptotic cleavage of cell adhesion proteins / Caspase activation via Dependence Receptors in the absence of ligand / SMAC, XIAP-regulated apoptotic response / Activation of caspases through apoptosome-mediated cleavage / death receptor binding / Signaling by Hippo / SMAC (DIABLO) binds to IAPs / SMAC(DIABLO)-mediated dissociation of IAP:caspase complexes / axonal fasciculation / regulation of synaptic vesicle cycle / CaM pathway / Cam-PDE 1 activation / fibroblast apoptotic process / Sodium/Calcium exchangers / Calmodulin induced events / epithelial cell apoptotic process / Other interleukin signaling / Reduction of cytosolic Ca++ levels / platelet formation / Activation of Ca-permeable Kainate Receptor / CREB1 phosphorylation through the activation of CaMKII/CaMKK/CaMKIV cascasde / negative regulation of cytokine production / Loss of phosphorylation of MECP2 at T308 / CREB1 phosphorylation through the activation of Adenylate Cyclase / PKA activation / CaMK IV-mediated phosphorylation of CREB / negative regulation of high voltage-gated calcium channel activity / positive regulation of amyloid-beta formation / Glycogen breakdown (glycogenolysis) / execution phase of apoptosis / CLEC7A (Dectin-1) induces NFAT activation / Activation of RAC1 downstream of NMDARs / negative regulation of calcium ion export across plasma membrane / organelle localization by membrane tethering / mitochondrion-endoplasmic reticulum membrane tethering / autophagosome membrane docking / negative regulation of B cell proliferation / presynaptic endocytosis / Apoptotic cleavage of cellular proteins / regulation of cardiac muscle cell action potential / positive regulation of ryanodine-sensitive calcium-release channel activity / pyroptotic inflammatory response / Synthesis of IP3 and IP4 in the cytosol / regulation of cell communication by electrical coupling involved in cardiac conduction / Phase 0 - rapid depolarisation / negative regulation of activated T cell proliferation / Negative regulation of NMDA receptor-mediated neuronal transmission / negative regulation of ryanodine-sensitive calcium-release channel activity / Unblocking of NMDA receptors, glutamate binding and activation / RHO GTPases activate PAKs / calcineurin-mediated signaling / T cell homeostasis / neurotrophin TRK receptor signaling pathway / Ion transport by P-type ATPases / B cell homeostasis / Uptake and function of anthrax toxins / Long-term potentiation / negative regulation of cell cycle / Regulation of MECP2 expression and activity / Calcineurin activates NFAT / protein phosphatase activator activity / response to tumor necrosis factor / regulation of ryanodine-sensitive calcium-release channel activity / DARPP-32 events / Smooth Muscle Contraction / catalytic complex / cell fate commitment / response to amino acid / response to X-ray / detection of calcium ion / Pyroptosis / regulation of macroautophagy / regulation of cardiac muscle contraction / Caspase-mediated cleavage of cytoskeletal proteins / RHO GTPases activate IQGAPs / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / presynaptic cytosol / calcium channel inhibitor activity / response to glucose / cellular response to interferon-beta / Protein methylation Similarity search - Function | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.45 Å | |||||||||
![]() | Zhang K / Peng T / Tao XY / Tian M / Li YX / Wang Z / Ma SF / Hu SF / Pan X / Xue J ...Zhang K / Peng T / Tao XY / Tian M / Li YX / Wang Z / Ma SF / Hu SF / Pan X / Xue J / Luo JW / Wu QL / Fu Y / Li S | |||||||||
Funding support | 1 items
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![]() | ![]() Title: Structural insights into caspase ADPR deacylization catalyzed by a bacterial effector and host calmodulin. Authors: Kuo Zhang / Ting Peng / Xinyuan Tao / Miao Tian / Yanxin Li / Zhao Wang / Shuaifei Ma / Shufan Hu / Xing Pan / Juan Xue / Jiwei Luo / Qiulan Wu / Yang Fu / Shan Li / ![]() Abstract: Programmed cell death and caspase proteins play a pivotal role in host innate immune response combating pathogen infections. Blocking cell death is employed by many bacterial pathogens as a universal ...Programmed cell death and caspase proteins play a pivotal role in host innate immune response combating pathogen infections. Blocking cell death is employed by many bacterial pathogens as a universal virulence strategy. CopC family type III effectors, including CopC from an environmental pathogen Chromobacterium violaceum, utilize calmodulin (CaM) as a co-factor to inactivate caspases by arginine ADPR deacylization. However, the molecular basis of the catalytic and substrate/co-factor binding mechanism is unknown. Here, we determine successive cryo-EM structures of CaM-CopC-caspase-3 ternary complex in pre-reaction, transition, and post-reaction states, which elucidate a multistep enzymatic mechanism of CopC-catalyzed ADPR deacylization. Moreover, we capture a snapshot of the detachment of modified caspase-3 from CopC. These structural insights are validated by mutagenesis analyses of CopC-mediated ADPR deacylization in vitro and animal infection in vivo. Our study offers a structural framework for understanding the molecular basis of arginine ADPR deacylization catalyzed by the CopC family. | |||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 167.9 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 17 KB 17 KB | Display Display | ![]() |
Images | ![]() | 179.5 KB | ||
Filedesc metadata | ![]() | 6.3 KB | ||
Others | ![]() ![]() | 165.2 MB 165.2 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 7xn6MC ![]() 7xn4C ![]() 7xn5C M: atomic model generated by this map C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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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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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.842 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: #2
File | emd_33312_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #1
File | emd_33312_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
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Sample components
-Entire : Cryo-EM structure of CopC-CaM-caspase-3 with ADPR-deacylization
Entire | Name: Cryo-EM structure of CopC-CaM-caspase-3 with ADPR-deacylization |
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Components |
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-Supramolecule #1: Cryo-EM structure of CopC-CaM-caspase-3 with ADPR-deacylization
Supramolecule | Name: Cryo-EM structure of CopC-CaM-caspase-3 with ADPR-deacylization type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3 |
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Source (natural) | Organism: ![]() |
-Macromolecule #1: Caspase-3
Macromolecule | Name: Caspase-3 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO / EC number: caspase-3 |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 32.175195 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: MENTENSVDS KSIKNLEPKI IHGSESMDSG ISLDNSYKMD YPEMGLCIII NNKNFHKSTG MTSRSGTDVD AANLRETFRN LKYEVRNKN DLTREEIVEL MRDVSKEDHS KRSSFVCVLL SHGEEGIIFG TNGPVDLKKI TNFFRGDRCR SLTGKPKLFI I QACRGTEL ...String: MENTENSVDS KSIKNLEPKI IHGSESMDSG ISLDNSYKMD YPEMGLCIII NNKNFHKSTG MTSRSGTDVD AANLRETFRN LKYEVRNKN DLTREEIVEL MRDVSKEDHS KRSSFVCVLL SHGEEGIIFG TNGPVDLKKI TNFFRGDRCR SLTGKPKLFI I QACRGTEL DCGIETDSGV DDDMACHKIP VEADFLYAYS TAPGYYSW(A1LTQ)N SKDGSWFIQS LCAMLKQYAD KLEFMH ILT RVNRKVATEF ESFSFDATFH AKKQIPCIVS MLTKELYFYH UniProtKB: Caspase-3 |
-Macromolecule #2: Arginine ADP-riboxanase CopC
Macromolecule | Name: Arginine ADP-riboxanase CopC / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO EC number: Lyases; Carbon-nitrogen lyases; Other carbon-nitrogen lyases |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 52.985516 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: MRVENHSPSL SKLNPPEAGS GDPTAIGRRL SGIRRAPLPH VSAGSDGEAA AAGKIGAFLR KAVAAQSYGL MFANGKLFEA TGDALEKRG QYGFSALQRL DGLSRRNLAA VEARLGALDS AERGLKERIM TGAWHFRHQS NAALDDGKTA AIASNHLLAR E SRSSGGNT ...String: MRVENHSPSL SKLNPPEAGS GDPTAIGRRL SGIRRAPLPH VSAGSDGEAA AAGKIGAFLR KAVAAQSYGL MFANGKLFEA TGDALEKRG QYGFSALQRL DGLSRRNLAA VEARLGALDS AERGLKERIM TGAWHFRHQS NAALDDGKTA AIASNHLLAR E SRSSGGNT FAGDKALLSN HDFVFFGVEF SGRGKQDKPL NHKHSTMDFG ANAYVVPDTL PACRHGYLTL TDHFFNRVPG GR EAEHQDF VGSFPQMGAE TGRWIHEGKY RQNAPIFNYR DMKAAVALHL IEFLRDSKDA AFKAYVFDQA MQSGQALDRV LNS VFQAEF HIPRLMATTD YAKHPLRPML LKEAVDSVNL PALSGLVSSK GDAVTAMWHA IDKGKDAVAA HLLGNWRFEA GDFA SAPPG FYHELNYALS EHGASVYILD QFLSRGWAAV NAPFEHVNSG ETMLDNAVKY GNREMAAALI KHGADRNLLS EWNGG KLDA LLA UniProtKB: Arginine ADP-riboxanase CopC |
-Macromolecule #3: Calmodulin-1
Macromolecule | Name: Calmodulin-1 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 16.852545 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: MADQLTEEQI AEFKEAFSLF DKDGDGTITT KELGTVMRSL GQNPTEAELQ DMINEVDADG NGTIDFPEFL TMMARKMKDT DSEEEIREA FRVFDKDGNG YISAAELRHV MTNLGEKLTD EEVDEMIREA DIDGDGQVNY EEFVQMMTAK UniProtKB: Calmodulin-1 |
-Macromolecule #4: NICOTINAMIDE
Macromolecule | Name: NICOTINAMIDE / type: ligand / ID: 4 / Number of copies: 1 / Formula: NCA |
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Molecular weight | Theoretical: 122.125 Da |
Chemical component information | ![]() ChemComp-NCA: |
-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: 7.5 |
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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) / Average electron dose: 40.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.5 µm / Nominal defocus min: 0.5 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Startup model | Type of model: OTHER |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.45 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 82876 |
Initial angle assignment | Type: OTHER |
Final angle assignment | Type: OTHER |