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- PDB-8zj2: Cryo-EM structure of the RhoG/DOCK5/ELMO1/Rac1 complex -

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Basic information

Entry
Database: PDB / ID: 8zj2
TitleCryo-EM structure of the RhoG/DOCK5/ELMO1/Rac1 complex
Components
  • Dedicator of cytokinesis protein 5
  • Engulfment and cell motility protein 1
  • Ras-related C3 botulinum toxin substrate 1
  • Rho-related GTP-binding protein RhoG
KeywordsSIGNALING PROTEIN / ELMO / DOCK / GEF / GTPASE / RHO / RAC
Function / homology
Function and homology information


negative regulation of vascular associated smooth muscle contraction / regulation of ruffle assembly / regulation of postsynapse assembly / regulation of respiratory burst / regulation of neutrophil migration / localization within membrane / negative regulation of interleukin-23 production / Activated NTRK2 signals through CDK5 / podosome assembly / negative regulation of receptor-mediated endocytosis ...negative regulation of vascular associated smooth muscle contraction / regulation of ruffle assembly / regulation of postsynapse assembly / regulation of respiratory burst / regulation of neutrophil migration / localization within membrane / negative regulation of interleukin-23 production / Activated NTRK2 signals through CDK5 / podosome assembly / negative regulation of receptor-mediated endocytosis / ruffle assembly / regulation of hydrogen peroxide metabolic process / NTRK2 activates RAC1 / engulfment of apoptotic cell / Inactivation of CDC42 and RAC1 / NADPH oxidase complex / respiratory burst / cortical cytoskeleton organization / WNT5:FZD7-mediated leishmania damping / guanyl-nucleotide exchange factor complex / SEMA3A-Plexin repulsion signaling by inhibiting Integrin adhesion / hepatocyte growth factor receptor signaling pathway / bone remodeling / myoblast fusion / ruffle organization / regulation of stress fiber assembly / thioesterase binding / cell projection assembly / negative regulation of fibroblast migration / activation of GTPase activity / RHO GTPases activate CIT / sphingosine-1-phosphate receptor signaling pathway / Nef and signal transduction / positive regulation of vascular associated smooth muscle cell migration / regulation of nitric oxide biosynthetic process / PCP/CE pathway / Activation of RAC1 / motor neuron axon guidance / positive regulation of neutrophil chemotaxis / RHO GTPases activate KTN1 / regulation of lamellipodium assembly / Azathioprine ADME / MET activates RAP1 and RAC1 / DCC mediated attractive signaling / positive regulation of cell-substrate adhesion / anchoring junction / Sema4D mediated inhibition of cell attachment and migration / CD28 dependent Vav1 pathway / Ephrin signaling / Wnt signaling pathway, planar cell polarity pathway / podosome / lamellipodium assembly / small GTPase-mediated signal transduction / regulation of cell size / Rho GDP-dissociation inhibitor binding / positive regulation of Rho protein signal transduction / Activation of RAC1 downstream of NMDARs / phagocytosis, engulfment / establishment or maintenance of cell polarity / NRAGE signals death through JNK / positive regulation of epithelial cell migration / Rac protein signal transduction / RHO GTPases activate PAKs / positive regulation of focal adhesion assembly / Sema3A PAK dependent Axon repulsion / Rho protein signal transduction / semaphorin-plexin signaling pathway / ficolin-1-rich granule membrane / RHOG GTPase cycle / EPH-ephrin mediated repulsion of cells / RHO GTPases Activate NADPH Oxidases / anatomical structure morphogenesis / RHO GTPases Activate WASPs and WAVEs / RHO GTPases activate IQGAPs / positive regulation of lamellipodium assembly / PTK6 Regulates RHO GTPases, RAS GTPase and MAP kinases / positive regulation of substrate adhesion-dependent cell spreading / RHO GTPases activate PKNs / positive regulation of stress fiber assembly / GPVI-mediated activation cascade / positive regulation of microtubule polymerization / EPHB-mediated forward signaling / RAC1 GTPase cycle / regulation of cell migration / actin filament polymerization / positive regulation of endothelial cell migration / GTPase activator activity / substrate adhesion-dependent cell spreading / cell-matrix adhesion / cell chemotaxis / secretory granule membrane / small monomeric GTPase / VEGFR2 mediated vascular permeability / guanyl-nucleotide exchange factor activity / Signal transduction by L1 / actin filament organization / cell projection / cell motility / Translocation of SLC2A4 (GLUT4) to the plasma membrane / RHO GTPases Activate Formins
Similarity search - Function
Rho-related GTP-binding protein RhoG / Dedicator of cytokinesis protein 5 / : / Dedicator of cytokinesis, N-terminal domain / Dedicator of cytokinesis, N-terminal, subdomain 1 / DOCK N-terminus / ELMO domain / : / ELMO/CED-12 family / ELMO domain profile. ...Rho-related GTP-binding protein RhoG / Dedicator of cytokinesis protein 5 / : / Dedicator of cytokinesis, N-terminal domain / Dedicator of cytokinesis, N-terminal, subdomain 1 / DOCK N-terminus / ELMO domain / : / ELMO/CED-12 family / ELMO domain profile. / ELMO, armadillo-like helical domain / ELMO, armadillo-like helical domain / Dedicator of cytokinesis / C2 DOCK-type domain / DOCKER domain / Dedicator of cytokinesis, C-terminal, lobe A / Dedicator of cytokinesis, C-terminal, lobe C / DOCKER, Lobe A / DOCKER, Lobe B / DOCKER, Lobe C / DHR-2, Lobe A / C2 domain in Dock180 and Zizimin proteins / DHR-2, Lobe C / DHR-2, Lobe B / C2 DOCK-type domain profile. / DOCKER domain profile. / Pleckstrin homology domain / Small GTPase Rho / small GTPase Rho family profile. / Ran (Ras-related nuclear proteins) /TC4 subfamily of small GTPases / C2 domain superfamily / Pleckstrin homology domain / SH3 domain / Rho (Ras homology) subfamily of Ras-like small GTPases / Ras subfamily of RAS small GTPases / Small GTPase / Ras family / Rab subfamily of small GTPases / Src homology 3 domains / SH3-like domain superfamily / Src homology 3 (SH3) domain profile. / SH3 domain / Armadillo-like helical / Small GTP-binding protein domain / PH-like domain superfamily / Armadillo-type fold / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
GUANOSINE-5'-TRIPHOSPHATE / Ras-related C3 botulinum toxin substrate 1 / Rho-related GTP-binding protein RhoG / Engulfment and cell motility protein 1 / Dedicator of cytokinesis protein 5
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.66 Å
AuthorsKukimoto-Niino, M. / Katsura, K. / Ishizuka-Katsura, Y. / Mishima-Tsumagari, C. / Yonemochi, M. / Inoue, M. / Nakagawa, R. / Kaushik, R. / Zhang, K.Y.J. / Shirouzu, M.
Funding support Japan, 3items
OrganizationGrant numberCountry
Japan Society for the Promotion of Science (JSPS)KAKENHI JP19K06575 Japan
Japan Society for the Promotion of Science (JSPS)KAKENHI JP22KH05551 Japan
Japan Science and TechnologyCREST JPMJCR22E3 Japan
CitationJournal: J Biol Chem / Year: 2024
Title: RhoG facilitates a conformational transition in the guanine nucleotide exchange factor complex DOCK5/ELMO1 to an open state.
Authors: Mutsuko Kukimoto-Niino / Kazushige Katsura / Yoshiko Ishizuka-Katsura / Chiemi Mishima-Tsumagari / Mayumi Yonemochi / Mio Inoue / Reiko Nakagawa / Rahul Kaushik / Kam Y J Zhang / Mikako Shirouzu /
Abstract: The dedicator of cytokinesis (DOCK)/engulfment and cell motility (ELMO) complex serves as a guanine nucleotide exchange factor (GEF) for the GTPase Rac. RhoG, another GTPase, activates the ELMO-DOCK- ...The dedicator of cytokinesis (DOCK)/engulfment and cell motility (ELMO) complex serves as a guanine nucleotide exchange factor (GEF) for the GTPase Rac. RhoG, another GTPase, activates the ELMO-DOCK-Rac pathway during engulfment and migration. Recent cryo-EM structures of the DOCK2/ELMO1 and DOCK2/ELMO1/Rac1 complexes have identified closed and open conformations that are key to understanding the autoinhibition mechanism. Nevertheless, the structural details of RhoG-mediated activation of the DOCK/ELMO complex remain elusive. Herein, we present cryo-EM structures of DOCK5/ELMO1 alone and in complex with RhoG and Rac1. The DOCK5/ELMO1 structure exhibits a closed conformation similar to that of DOCK2/ELMO1, suggesting a shared regulatory mechanism of the autoinhibitory state across DOCK-A/B subfamilies (DOCK1-5). Conversely, the RhoG/DOCK5/ELMO1/Rac1 complex adopts an open conformation that differs from that of the DOCK2/ELMO1/Rac1 complex, with RhoG binding to both ELMO1 and DOCK5. The alignment of the DOCK5 phosphatidylinositol (3,4,5)-trisphosphate binding site with the RhoG C-terminal lipidation site suggests simultaneous binding of RhoG and DOCK5/ELMO1 to the plasma membrane. Structural comparison of the apo and RhoG-bound states revealed that RhoG facilitates a closed-to-open state conformational change of DOCK5/ELMO1. Biochemical and surface plasmon resonance (SPR) assays confirm that RhoG enhances the Rac GEF activity of DOCK5/ELMO1 and increases its binding affinity for Rac1. Further analysis of structural variability underscored the conformational flexibility of the DOCK5/ELMO1/Rac1 complex core, potentially facilitating the proximity of the DOCK5 GEF domain to the plasma membrane. These findings elucidate the structural mechanism underlying the RhoG-induced allosteric activation and membrane binding of the DOCK/ELMO complex.
History
DepositionMay 14, 2024Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Jun 26, 2024Provider: repository / Type: Initial release
Revision 1.1Jul 17, 2024Group: Data collection / Database references / Category: citation / em_admin / Item: _citation.journal_volume / _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
B: Dedicator of cytokinesis protein 5
C: Ras-related C3 botulinum toxin substrate 1
F: Dedicator of cytokinesis protein 5
G: Ras-related C3 botulinum toxin substrate 1
E: Engulfment and cell motility protein 1
A: Engulfment and cell motility protein 1
D: Rho-related GTP-binding protein RhoG
hetero molecules


Theoretical massNumber of molelcules
Total (without water)615,0589
Polymers614,5117
Non-polymers5472
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

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Protein , 4 types, 7 molecules BFCGEAD

#1: Protein Dedicator of cytokinesis protein 5


Mass: 191492.125 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: DOCK5 / Production host: Homo sapiens (human) / References: UniProt: Q9H7D0
#2: Protein Ras-related C3 botulinum toxin substrate 1 / Cell migration-inducing gene 5 protein / Ras-like protein TC25 / p21-Rac1


Mass: 20244.258 Da / Num. of mol.: 2 / Mutation: G15A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: RAC1, TC25, MIG5 / Production host: Escherichia coli (E. coli) / References: UniProt: P63000, small monomeric GTPase
#3: Protein Engulfment and cell motility protein 1 / Protein ced-12 homolog


Mass: 84337.719 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ELMO1, KIAA0281 / Production host: Homo sapiens (human) / References: UniProt: Q92556
#4: Protein Rho-related GTP-binding protein RhoG


Mass: 22362.359 Da / Num. of mol.: 1 / Mutation: Q61L
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: RHOG, ARHG / Production host: Escherichia coli (E. coli) / References: UniProt: P84095

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Non-polymers , 2 types, 2 molecules

#5: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg / Feature type: SUBJECT OF INVESTIGATION
#6: Chemical ChemComp-GTP / GUANOSINE-5'-TRIPHOSPHATE


Mass: 523.180 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H16N5O14P3 / Feature type: SUBJECT OF INVESTIGATION / Comment: GTP, energy-carrying molecule*YM

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Details

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: RhoG/DOCK5/ELMO1/Rac1 complex / Type: COMPLEX / Entity ID: #1-#4 / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 8
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 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 / Nominal magnification: 64000 X / Nominal defocus max: 2000 nm / Nominal defocus min: 800 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) / Num. of real images: 11976

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Processing

EM software
IDNameVersionCategory
1crYOLOparticle selection
2EPUimage acquisition
4CTFFIND4.1CTF correction
7UCSF Chimeramodel fitting
9PHENIXmodel refinement
10RELION3.1initial Euler assignment
11RELION3.1final Euler assignment
12RELION3.1classification
13RELION3.13D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 2483502
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 4.66 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 169096 / Symmetry type: POINT
Atomic model building
IDPDB-ID 3D fitting-IDAccession codeInitial refinement model-IDSource nameType
17DPA

7dpa

17DPA1PDBexperimental model
26IE1

6ie1

16IE12PDBexperimental model
37Y4A

7y4a

17Y4A3PDBexperimental model
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00639399
ELECTRON MICROSCOPYf_angle_d0.9353235
ELECTRON MICROSCOPYf_dihedral_angle_d9.5225171
ELECTRON MICROSCOPYf_chiral_restr0.0525913
ELECTRON MICROSCOPYf_plane_restr0.0066816

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