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- PDB-7ppo: Structure of SidJ/CaM bound to SdeA in pre-glutamylation state -

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Basic information

Entry
Database: PDB / ID: 7ppo
TitleStructure of SidJ/CaM bound to SdeA in pre-glutamylation state
Components
  • Calmodulin
  • Calmodulin-dependent glutamylase SidJ
  • Ubiquitinating/deubiquitinating enzyme SdeA
KeywordsLIGASE / Glutamylase / Pseudokinase / phosphoribosyl / ubiquitination / Complex
Function / homology
Function and homology information


Ligases / NAD+-protein-arginine ADP-ribosyltransferase / negative regulation of calcium ion transmembrane transporter activity / deNEDDylase activity / NAD+-protein-arginine ADP-ribosyltransferase activity / protein deneddylation / Transferases; Acyltransferases; Aminoacyltransferases / K63-linked deubiquitinase activity / positive regulation of cyclic-nucleotide phosphodiesterase activity / negative regulation of calcium ion export across plasma membrane ...Ligases / NAD+-protein-arginine ADP-ribosyltransferase / negative regulation of calcium ion transmembrane transporter activity / deNEDDylase activity / NAD+-protein-arginine ADP-ribosyltransferase activity / protein deneddylation / Transferases; Acyltransferases; Aminoacyltransferases / K63-linked deubiquitinase activity / positive regulation of cyclic-nucleotide phosphodiesterase activity / negative regulation of calcium ion export across plasma membrane / positive regulation of ryanodine-sensitive calcium-release channel activity / regulation of cell communication by electrical coupling involved in cardiac conduction / negative regulation of peptidyl-threonine phosphorylation / protein deubiquitination / protein phosphatase activator activity / ligase activity / positive regulation of phosphoprotein phosphatase activity / adenylate cyclase binding / catalytic complex / detection of calcium ion / regulation of cardiac muscle contraction / negative regulation of ryanodine-sensitive calcium-release channel activity / calcium channel inhibitor activity / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / regulation of calcium-mediated signaling / cysteine-type peptidase activity / positive regulation of protein dephosphorylation / titin binding / voltage-gated potassium channel complex / positive regulation of protein autophosphorylation / sperm midpiece / calcium channel complex / substantia nigra development / adenylate cyclase activator activity / regulation of heart rate / nucleotidyltransferase activity / sarcomere / protein serine/threonine kinase activator activity / positive regulation of peptidyl-threonine phosphorylation / regulation of cytokinesis / positive regulation of protein serine/threonine kinase activity / spindle microtubule / spindle pole / response to calcium ion / G2/M transition of mitotic cell cycle / calcium-dependent protein binding / host cell / myelin sheath / transferase activity / vesicle / transmembrane transporter binding / Hydrolases; Acting on peptide bonds (peptidases); Cysteine endopeptidases / protein ubiquitination / G protein-coupled receptor signaling pathway / nucleotide binding / centrosome / calcium ion binding / protein kinase binding / protein-containing complex / proteolysis / extracellular region / membrane / nucleus / metal ion binding / plasma membrane / cytoplasm
Similarity search - Function
SidE, DUB domain / SidE, mono-ADP-ribosyltransferase domain / SidE mono-ADP-ribosyltransferase domain / SidE DUB domain / SidE, PDE domain / SidE phosphodiesterase (PDE) domain / EF-hand domain pair / EF-hand, calcium binding motif / EF-Hand 1, calcium-binding site / EF-hand calcium-binding domain. ...SidE, DUB domain / SidE, mono-ADP-ribosyltransferase domain / SidE mono-ADP-ribosyltransferase domain / SidE DUB domain / SidE, PDE domain / SidE phosphodiesterase (PDE) domain / EF-hand domain pair / EF-hand, calcium binding motif / EF-Hand 1, calcium-binding site / EF-hand calcium-binding domain. / EF-hand calcium-binding domain profile. / EF-hand domain / EF-hand domain pair
Similarity search - Domain/homology
Calmodulin-2 / Ubiquitinating/deubiquitinating enzyme SdeA / Calmodulin-dependent glutamylase SidJ
Similarity search - Component
Biological speciesLegionella pneumophila (bacteria)
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.91 Å
AuthorsAdams, M. / Bhogaraju, S.
Funding supportEuropean Union, 1items
OrganizationGrant numberCountry
European Union (EU)European Union
CitationJournal: Nat Commun / Year: 2021
Title: Structural basis for protein glutamylation by the Legionella pseudokinase SidJ.
Authors: Michael Adams / Rahul Sharma / Thomas Colby / Felix Weis / Ivan Matic / Sagar Bhogaraju /
Abstract: Legionella pneumophila (LP) avoids phagocytosis by secreting nearly 300 effector proteins into the host cytosol. SidE family of effectors (SdeA, SdeB, SdeC and SidE) employ phosphoribosyl ...Legionella pneumophila (LP) avoids phagocytosis by secreting nearly 300 effector proteins into the host cytosol. SidE family of effectors (SdeA, SdeB, SdeC and SidE) employ phosphoribosyl ubiquitination to target multiple host Rab GTPases and innate immune factors. To suppress the deleterious toxicity of SidE enzymes in a timely manner, LP employs a metaeffector named SidJ. Upon activation by host Calmodulin (CaM), SidJ executes an ATP-dependent glutamylation to modify the catalytic residue Glu860 in the mono-ADP-ribosyl transferase (mART) domain of SdeA. SidJ is a unique glutamylase that adopts a kinase-like fold but contains two nucleotide-binding pockets. There is a lack of consensus about the substrate recognition and catalytic mechanism of SidJ. Here, we determined the cryo-EM structure of SidJ in complex with its substrate SdeA in two different states of catalysis. Our structures reveal that both phosphodiesterase (PDE) and mART domains of SdeA make extensive contacts with SidJ. In the pre-glutamylation state structure of the SidJ-SdeA complex, adenylylated E860 of SdeA is inserted into the non-canonical (migrated) nucleotide-binding pocket of SidJ. Structure-based mutational analysis indicates that SidJ employs its migrated pocket for the glutamylation of SdeA. Finally, using mass spectrometry, we identified several transient autoAMPylation sites close to both the catalytic pockets of SidJ. Our data provide unique insights into the substrate recognition and the mechanism of protein glutamylation by the pseudokinase SidJ.
History
DepositionSep 14, 2021Deposition site: PDBE / Processing site: PDBE
Revision 1.0Oct 27, 2021Provider: repository / Type: Initial release
Revision 1.1Nov 17, 2021Group: Data collection / Database references
Category: citation / citation_author ...citation / citation_author / em_admin / pdbx_database_proc
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _citation_author.identifier_ORCID / _em_admin.last_update

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Assembly

Deposited unit
A: Ubiquitinating/deubiquitinating enzyme SdeA
C: Calmodulin-dependent glutamylase SidJ
B: Calmodulin
hetero molecules


Theoretical massNumber of molelcules
Total (without water)222,1585
Polymers222,0933
Non-polymers642
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Ubiquitinating/deubiquitinating enzyme SdeA / Effector protein SdeA / Septation initiation protein


Mass: 111200.375 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Legionella pneumophila (bacteria) / Gene: sdeA, lpg2157 / Production host: Escherichia coli (E. coli)
References: UniProt: Q5ZTK4, Hydrolases; Acting on peptide bonds (peptidases); Cysteine endopeptidases, Transferases; Acyltransferases; Aminoacyltransferases, NAD+-protein-arginine ADP-ribosyltransferase
#2: Protein Calmodulin-dependent glutamylase SidJ


Mass: 91826.992 Da / Num. of mol.: 1 / Mutation: E565A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Legionella pneumophila (bacteria) / Gene: sidJ, lpg2155 / Production host: Escherichia coli (E. coli) / References: UniProt: Q5ZTK6, Ligases
#3: Protein Calmodulin


Mass: 19066.006 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Escherichia coli (E. coli) / References: UniProt: P0DP24
#4: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg
#5: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Ca
Has ligand of interestY

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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: SidJ/CaM-SdeA / Type: COMPLEX / Entity ID: #1-#3 / Source: RECOMBINANT
Source (natural)Organism: Legionella pneumophila (bacteria)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationInstrument: FEI VITROBOT MARK I / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 4 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD
Image recordingElectron dose: 47.45 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

Software
NameVersionClassificationNB
phenix.real_space_refine1.15.2_3472refinement
PHENIX1.15.2_3472refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.91 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 140022 / Symmetry type: POINT
RefinementStereochemistry target values: GeoStd + Monomer Library + CDL v1.2
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.005611221
ELECTRON MICROSCOPYf_angle_d0.575615173
ELECTRON MICROSCOPYf_chiral_restr0.04291669
ELECTRON MICROSCOPYf_plane_restr0.00381965
ELECTRON MICROSCOPYf_dihedral_angle_d12.65096766

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