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- PDB-9lxh: DOCK5/ELMO1 complex with RhoG and Rac1 on lipid membrane -

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Basic information

Entry
Database: PDB / ID: 9lxh
TitleDOCK5/ELMO1 complex with RhoG and Rac1 on lipid membrane
Components
  • Dedicator of cytokinesis protein 5
  • Engulfment and cell motility protein 1
  • Rho-related GTP-binding protein RhoG
KeywordsSIGNALING PROTEIN / Complex / Rho-GTPase / GEF / Lipid membrane
Function / homology
Function and homology information


regulation of ruffle assembly / negative regulation of vascular associated smooth muscle contraction / podosome assembly / cortical cytoskeleton organization / activation of GTPase activity / guanyl-nucleotide exchange factor complex / bone remodeling / myoblast fusion / positive regulation of vascular associated smooth muscle cell migration / Nef and signal transduction ...regulation of ruffle assembly / negative regulation of vascular associated smooth muscle contraction / podosome assembly / cortical cytoskeleton organization / activation of GTPase activity / guanyl-nucleotide exchange factor complex / bone remodeling / myoblast fusion / positive regulation of vascular associated smooth muscle cell migration / Nef and signal transduction / RHO GTPases activate KTN1 / podosome / anchoring junction / phagocytosis, engulfment / establishment or maintenance of cell polarity / Rac protein signal transduction / positive regulation of epithelial cell migration / RHOG GTPase cycle / regulation of postsynapse assembly / PTK6 Regulates RHO GTPases, RAS GTPase and MAP kinases / Rho protein signal transduction / GPVI-mediated activation cascade / RAC1 GTPase cycle / positive regulation of substrate adhesion-dependent cell spreading / GTPase activator activity / guanyl-nucleotide exchange factor activity / secretory granule membrane / actin filament organization / cell chemotaxis / regulation of actin cytoskeleton organization / positive regulation of protein localization to plasma membrane / cell projection / FCGR3A-mediated phagocytosis / cell motility / Regulation of actin dynamics for phagocytic cup formation / SH3 domain binding / VEGFA-VEGFR2 Pathway / small GTPase binding / Constitutive Signaling by Aberrant PI3K in Cancer / cell migration / PIP3 activates AKT signaling / regulation of cell shape / Factors involved in megakaryocyte development and platelet production / PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling / actin cytoskeleton organization / cytoplasmic vesicle / cytoskeleton / postsynapse / focal adhesion / GTPase activity / positive regulation of cell population proliferation / apoptotic process / Neutrophil degranulation / protein kinase binding / endoplasmic reticulum membrane / positive regulation of DNA-templated transcription / GTP binding / glutamatergic synapse / extracellular exosome / membrane / plasma membrane / cytosol / cytoplasm
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 / Dedicator of cytokinesis (DOCK) TPR region / ELMO domain / ELMO, armadillo-like helical domain ...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 / Dedicator of cytokinesis (DOCK) TPR region / ELMO domain / ELMO, armadillo-like helical domain / : / ELMO/CED-12 family / ELMO, armadillo-like helical domain / ELMO domain profile. / 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 domain 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
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: 7.52 Å
AuthorsShinoda, T. / Katsura, K. / Kukimoto-Niino, M. / Shirouzu, M.
Funding support Japan, 1items
OrganizationGrant numberCountry
Japan Science and TechnologyCREST JPMJCR22E3 Japan
CitationJournal: Commun Biol / Year: 2025
Title: Conformational alteration of DOCK5•ELMO1 signalosome on lipid membrane.
Authors: Takehiro Shinoda / Kazushige Katsura / Yoshiko Ishizuka-Katsura / Kazuharu Hanada / Mayumi Yonemochi / Yuki Miyamoto / Mutsuko Kukimoto-Niino / Junji Yamauchi / Mikako Shirouzu /
Abstract: The DOCK protein family activates Rho small GTPases through guanine nucleotide exchange factor (GEF) activity. DOCK is thought to exert its GEF activity at the plasma membrane. However, the mechanism ...The DOCK protein family activates Rho small GTPases through guanine nucleotide exchange factor (GEF) activity. DOCK is thought to exert its GEF activity at the plasma membrane. However, the mechanism by which DOCK activity on the plasma membrane is regulated remains unclear. Herein, we present a new conformation in which DOCK5, ELMO1, RhoG, and Rac1 are aligned on a plane and symmetrically flattened, as revealed by cryo-EM using a lipid membrane-coated grid. The major conformational change leading to this structure results from rotation of each DOCK5•ELMO1 hinge site through interactions with the membrane. Biochemical and cellular experiments indicate that conformational changes driven by acidic lipids are important for regulating the GEF activity of the DOCK5•ELMO1 complex on the plasma membrane and are essential for its downstream signalling. This approach also enables the analysis of large lipid-associated complexes, such as signalosomes, and will aid studies of membrane-dependent signalling assemblies.
History
DepositionFeb 18, 2025Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Nov 19, 2025Provider: repository / Type: Initial release
Revision 1.0Nov 19, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Nov 19, 2025Data content type: FSC / Data content type: FSC / Provider: repository / Type: Initial release
Revision 1.0Nov 19, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Nov 19, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Nov 19, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Nov 19, 2025Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.1Nov 26, 2025Group: Data collection / Database references / Category: citation / citation_author / em_admin
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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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Engulfment and cell motility protein 1
B: Dedicator of cytokinesis protein 5
C: Rho-related GTP-binding protein RhoG


Theoretical massNumber of molelcules
Total (without water)324,0953
Polymers324,0953
Non-polymers00
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

#1: Protein Engulfment and cell motility protein 1 / Protein ced-12 homolog


Mass: 84379.797 Da / Num. of mol.: 1
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
#2: Protein Dedicator of cytokinesis protein 5


Mass: 216022.406 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: DOCK5 / Production host: Homo sapiens (human) / References: UniProt: Q9H7D0
#3: Protein Rho-related GTP-binding protein RhoG


Mass: 23692.918 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
Has protein modificationN

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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: DOCK5/ELMO1 complex with RhoG and Rac1 on lipid membrane
Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 7
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
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: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 800 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 7.52 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 55365 / Symmetry type: POINT
RefinementHighest resolution: 7.52 Å / Cross valid method: NONE
Stereochemistry target values: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS)
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00217783
ELECTRON MICROSCOPYf_angle_d0.49624021
ELECTRON MICROSCOPYf_dihedral_angle_d12.8186741
ELECTRON MICROSCOPYf_chiral_restr0.0392701
ELECTRON MICROSCOPYf_plane_restr0.0043082

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