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- PDB-8ka0: Crystal structure of Vibrio vulnificus RID-dependent transforming... -
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Basic information
Entry | Database: PDB / ID: 8ka0 | |||||||||
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Title | Crystal structure of Vibrio vulnificus RID-dependent transforming NADase domain (RDTND)/calmodulin-binding domain of Rho inactivation domain (RID-CBD) complexed with Ca2+-bound calmodulin and a nicotinamide adenine dinucleotide (NAD+) | |||||||||
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![]() | TOXIN / MARTX toxin / RDTND-RID / NADase / CaM / NAD+ | |||||||||
Function / homology | ![]() negative regulation of calcium ion transmembrane transporter activity / Ligases; Forming carbon-nitrogen bonds; Acid-amino-acid ligases (peptide synthases) / host cell cytosol / negative regulation of calcium ion export across plasma membrane / acyltransferase activity / presynaptic endocytosis / positive regulation of ryanodine-sensitive calcium-release channel activity / ligase activity / regulation of cell communication by electrical coupling involved in cardiac conduction / negative regulation of ryanodine-sensitive calcium-release channel activity ...negative regulation of calcium ion transmembrane transporter activity / Ligases; Forming carbon-nitrogen bonds; Acid-amino-acid ligases (peptide synthases) / host cell cytosol / negative regulation of calcium ion export across plasma membrane / acyltransferase activity / presynaptic endocytosis / positive regulation of ryanodine-sensitive calcium-release channel activity / ligase activity / regulation of cell communication by electrical coupling involved in cardiac conduction / negative regulation of ryanodine-sensitive calcium-release channel activity / calcineurin-mediated signaling / protein phosphatase activator activity / adenylate cyclase binding / catalytic complex / detection of calcium ion / regulation of cardiac muscle contraction / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / presynaptic cytosol / calcium channel inhibitor activity / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / regulation of calcium-mediated signaling / titin binding / voltage-gated potassium channel complex / sperm midpiece / substantia nigra development / calcium channel complex / Transferases; Acyltransferases; Transferring groups other than aminoacyl groups / calyx of Held / cysteine-type peptidase activity / adenylate cyclase activator activity / regulation of heart rate / protein serine/threonine kinase activator activity / sarcomere / regulation of cytokinesis / spindle microtubule / long-term synaptic potentiation / spindle pole / response to calcium ion / calcium-dependent protein binding / G2/M transition of mitotic cell cycle / myelin sheath / toxin activity / vesicle / transmembrane transporter binding / Hydrolases; Acting on peptide bonds (peptidases); Cysteine endopeptidases / G protein-coupled receptor signaling pathway / lipid binding / centrosome / calcium ion binding / protein kinase binding / host cell plasma membrane / protein-containing complex / proteolysis / extracellular region / metal ion binding / nucleus / membrane / plasma membrane / cytoplasm Similarity search - Function | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | ![]() ![]() ![]() | |||||||||
![]() | Lee, Y. / Choi, S. / Hwang, J. / Kim, M.H. | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Dissemination of pathogenic bacteria is reinforced by a MARTX toxin effector duet. Authors: Sanghyeon Choi / Youngjin Lee / Shinhye Park / Song Yee Jang / Jongbin Park / Do Won Oh / Su-Man Kim / Tae-Hwan Kim / Ga Seul Lee / Changyi Cho / Byoung Sik Kim / Donghan Lee / Eun-Hee Kim / ...Authors: Sanghyeon Choi / Youngjin Lee / Shinhye Park / Song Yee Jang / Jongbin Park / Do Won Oh / Su-Man Kim / Tae-Hwan Kim / Ga Seul Lee / Changyi Cho / Byoung Sik Kim / Donghan Lee / Eun-Hee Kim / Hae-Kap Cheong / Jeong Hee Moon / Ji-Joon Song / Jungwon Hwang / Myung Hee Kim / ![]() Abstract: Multiple bacterial genera take advantage of the multifunctional autoprocessing repeats-in-toxin (MARTX) toxin to invade host cells. Secretion of the MARTX toxin by Vibrio vulnificus, a deadly ...Multiple bacterial genera take advantage of the multifunctional autoprocessing repeats-in-toxin (MARTX) toxin to invade host cells. Secretion of the MARTX toxin by Vibrio vulnificus, a deadly opportunistic pathogen that causes primary septicemia, the precursor of sepsis, is a major driver of infection; however, the molecular mechanism via which the toxin contributes to septicemia remains unclear. Here, we report the crystal and cryo-electron microscopy (EM) structures of a toxin effector duet comprising the domain of unknown function in the first position (DUF1)/Rho inactivation domain (RID) complexed with human targets. These structures reveal how the duet is used by bacteria as a potent weapon. The data show that DUF1 acts as a RID-dependent transforming NADase domain (RDTND) that disrupts NAD homeostasis by hijacking calmodulin. The cryo-EM structure of the RDTND-RID duet complexed with calmodulin and Rac1, together with immunological analyses in vitro and in mice, provide mechanistic insight into how V. vulnificus uses the duet to suppress ROS generation by depleting NAD(P) and modifying Rac1 in a mutually-reinforcing manner that ultimately paralyzes first line immune responses, promotes dissemination of invaders, and induces sepsis. These data may allow development of tools or strategies to combat MARTX toxin-related human diseases. | |||||||||
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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PDBx/mmCIF format | ![]() | 458.7 KB | Display | ![]() |
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PDB format | ![]() | 374.5 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Summary document | ![]() | 5.2 MB | Display | ![]() |
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Full document | ![]() | 5.2 MB | Display | |
Data in XML | ![]() | 87.2 KB | Display | |
Data in CIF | ![]() | 119.3 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8k9zSC ![]() 8ka1C ![]() 8ka2C S: Starting model for refinement C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Assembly
Deposited unit | ![]()
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2 | ![]()
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3 | ![]()
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4 | ![]()
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Unit cell |
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Components
-Protein , 2 types, 8 molecules ACEGBDFH
#1: Protein | Mass: 47092.160 Da / Num. of mol.: 4 / Fragment: DUF1-RIDcbd (residues, 1959-2374) / Mutation: E2186Q Source method: isolated from a genetically manipulated source Details: NCBI accession ID: WP_015728045.1 / Source: (gene. exp.) ![]() ![]() ![]() References: UniProt: A0A2S3R7M0, Hydrolases; Acting on peptide bonds (peptidases); Cysteine endopeptidases #2: Protein | Mass: 16979.691 Da / Num. of mol.: 4 Source method: isolated from a genetically manipulated source Details: N-terminal additional vector sequences, GA / Source: (gene. exp.) ![]() ![]() ![]() |
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-Non-polymers , 4 types, 632 molecules 






#3: Chemical | ChemComp-NAD / #4: Chemical | ChemComp-CA / #5: Chemical | ChemComp-GOL / #6: Water | ChemComp-HOH / | |
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-Details
Has ligand of interest | Y |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.38 Å3/Da / Density % sol: 48.25 % |
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Crystal grow | Temperature: 293 K / Method: vapor diffusion, sitting drop / pH: 8.5 Details: 0.1 M Tris-HCl (pH 8.5), 32.5% (w/v) PEG 4000 and 0.15 M sodium acetate. 10 mM NAD+ soaking |
-Data collection
Diffraction | Mean temperature: 100 K / Serial crystal experiment: N |
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Diffraction source | Source: ![]() ![]() |
Detector | Type: DECTRIS EIGER X 9M / Detector: PIXEL / Date: Mar 24, 2022 |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 1 Å / Relative weight: 1 |
Reflection | Resolution: 2.35→29.62 Å / Num. obs: 98734 / % possible obs: 99.8 % / Redundancy: 6.9 % / CC1/2: 0.999 / Net I/σ(I): 11.6 |
Reflection shell | Resolution: 2.35→2.39 Å / Num. unique obs: 4831 / CC1/2: 0.675 / % possible all: 99.9 |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: 8K9Z Resolution: 2.35→29.62 Å / Cor.coef. Fo:Fc: 0.952 / Cor.coef. Fo:Fc free: 0.924 / Cross valid method: THROUGHOUT / ESU R: 0.494 / ESU R Free: 0.279 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
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Solvent computation | Ion probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 55.8 Å2
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Refinement step | Cycle: LAST / Resolution: 2.35→29.62 Å
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