[English] 日本語
Yorodumi
- PDB-7kfz: Structure of a ternary KRas(G13D)-SOS complex -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: PDB / ID: 7kfz
TitleStructure of a ternary KRas(G13D)-SOS complex
Components
  • GTPase KRas
  • Son of sevenless homolog 1
KeywordsHYDROLASE/SIGNALING PROTEIN / Ras / Sos / GTPase / HYDROLASE-SIGNALING PROTEIN complex
Function / homology
Function and homology information


GTPase complex / Interleukin-15 signaling / Activation of RAC1 / neurotrophin TRK receptor signaling pathway / Signaling by LTK / leukocyte migration / Regulation of KIT signaling / epidermal growth factor receptor binding / NRAGE signals death through JNK / positive regulation of Rac protein signal transduction ...GTPase complex / Interleukin-15 signaling / Activation of RAC1 / neurotrophin TRK receptor signaling pathway / Signaling by LTK / leukocyte migration / Regulation of KIT signaling / epidermal growth factor receptor binding / NRAGE signals death through JNK / positive regulation of Rac protein signal transduction / response to mineralocorticoid / GMP binding / LRR domain binding / Fc-epsilon receptor signaling pathway / positive regulation of epidermal growth factor receptor signaling pathway / response to isolation stress / GRB2:SOS provides linkage to MAPK signaling for Integrins / response to gravity / myoblast proliferation / RET signaling / cardiac muscle cell proliferation / Signaling by RAS GAP mutants / Signaling by RAS GTPase mutants / Activation of RAS in B cells / Role of LAT2/NTAL/LAB on calcium mobilization / RAS signaling downstream of NF1 loss-of-function variants / Interleukin receptor SHC signaling / RUNX3 regulates p14-ARF / Signal attenuation / SOS-mediated signalling / Activated NTRK3 signals through RAS / Activated NTRK2 signals through RAS / Schwann cell development / SHC1 events in ERBB4 signaling / response to ischemia / Signalling to RAS / SHC-related events triggered by IGF1R / Activated NTRK2 signals through FRS2 and FRS3 / Estrogen-stimulated signaling through PRKCZ / SHC-mediated cascade:FGFR3 / MET activates RAS signaling / positive regulation of Ras protein signal transduction / myelination / SHC-mediated cascade:FGFR2 / SHC-mediated cascade:FGFR4 / PTK6 Regulates RHO GTPases, RAS GTPase and MAP kinases / Signaling by PDGFRA transmembrane, juxtamembrane and kinase domain mutants / Signaling by PDGFRA extracellular domain mutants / insulin-like growth factor receptor signaling pathway / Erythropoietin activates RAS / SHC-mediated cascade:FGFR1 / Signaling by FGFR4 in disease / Signaling by CSF3 (G-CSF) / FRS-mediated FGFR3 signaling / Signaling by FLT3 ITD and TKD mutants / FRS-mediated FGFR2 signaling / RAC1 GTPase cycle / FRS-mediated FGFR4 signaling / p38MAPK events / FRS-mediated FGFR1 signaling / Signaling by FGFR3 in disease / Tie2 Signaling / Signaling by FGFR2 in disease / protein-membrane adaptor activity / GRB2 events in EGFR signaling / Signaling by FLT3 fusion proteins / SHC1 events in EGFR signaling / FCERI mediated Ca+2 mobilization / FLT3 Signaling / EGFR Transactivation by Gastrin / Signaling by FGFR1 in disease / B cell receptor signaling pathway / NCAM signaling for neurite out-growth / CD209 (DC-SIGN) signaling / liver development / axon guidance / guanyl-nucleotide exchange factor activity / GRB2 events in ERBB2 signaling / response to glucocorticoid / Downstream signal transduction / GTPase activator activity / Insulin receptor signalling cascade / SHC1 events in ERBB2 signaling / Antigen activates B Cell Receptor (BCR) leading to generation of second messengers / Constitutive Signaling by Overexpressed ERBB2 / Ras activation upon Ca2+ influx through NMDA receptor / Signaling by phosphorylated juxtamembrane, extracellular and kinase domain KIT mutants / VEGFR2 mediated cell proliferation / T cell activation / small monomeric GTPase / FCERI mediated MAPK activation / female pregnancy / SH3 domain binding / Signaling by ERBB2 TMD/JMD mutants / molecular condensate scaffold activity / Constitutive Signaling by EGFRvIII / Signaling by SCF-KIT / RAF activation / Signaling by high-kinase activity BRAF mutants / Signaling by ERBB2 ECD mutants
Similarity search - Function
Ras guanine-nucleotide exchange factor, conserved site / Ras Guanine-nucleotide exchange factors domain signature. / RasGEF N-terminal motif / Guanine nucleotide exchange factor for Ras-like GTPases; N-terminal motif / Ras-like guanine nucleotide exchange factor, N-terminal / Ras-like guanine nucleotide exchange factor / Ras guanine-nucleotide exchange factors N-terminal domain profile. / Ras guanine nucleotide exchange factor domain superfamily / Ras guanine-nucleotide exchange factor, catalytic domain superfamily / RasGEF domain ...Ras guanine-nucleotide exchange factor, conserved site / Ras Guanine-nucleotide exchange factors domain signature. / RasGEF N-terminal motif / Guanine nucleotide exchange factor for Ras-like GTPases; N-terminal motif / Ras-like guanine nucleotide exchange factor, N-terminal / Ras-like guanine nucleotide exchange factor / Ras guanine-nucleotide exchange factors N-terminal domain profile. / Ras guanine nucleotide exchange factor domain superfamily / Ras guanine-nucleotide exchange factor, catalytic domain superfamily / RasGEF domain / Ras guanine-nucleotide exchange factors catalytic domain profile. / Guanine nucleotide exchange factor for Ras-like small GTPases / Ras guanine-nucleotide exchange factors catalytic domain / : / SOS1/NGEF-like PH domain / Dbl homology (DH) domain superfamily / RhoGEF domain / Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases / Dbl homology (DH) domain / Dbl homology (DH) domain profile. / Small GTPase, Ras-type / Small GTPase Ras domain profile. / Ran (Ras-related nuclear proteins) /TC4 subfamily of small GTPases / PH domain profile. / Pleckstrin homology domain. / Pleckstrin homology 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 / Histone-fold / Small GTP-binding protein domain / PH-like domain superfamily / P-loop containing nucleotide triphosphate hydrolases / Rossmann fold / P-loop containing nucleoside triphosphate hydrolase / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER / GTPase KRas / Son of sevenless homolog 1
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.47 Å
AuthorsLiu, C. / Moghadamchargari, Z. / Laganowsky, A. / Zhao, M.
Funding support United States, 1items
OrganizationGrant numberCountry
National Institutes of Health/National Cancer Institute (NIH/NCI)RO1GM121751 United States
CitationJournal: Proc Natl Acad Sci U S A / Year: 2021
Title: Molecular assemblies of the catalytic domain of SOS with KRas and oncogenic mutants.
Authors: Zahra Moghadamchargari / Mehdi Shirzadeh / Chang Liu / Samantha Schrecke / Charles Packianathan / David H Russell / Minglei Zhao / Arthur Laganowsky /
Abstract: Ras is regulated by a specific guanine nucleotide exchange factor Son of Sevenless (SOS), which facilitates the exchange of inactive, GDP-bound Ras with GTP. The catalytic activity of SOS is also ...Ras is regulated by a specific guanine nucleotide exchange factor Son of Sevenless (SOS), which facilitates the exchange of inactive, GDP-bound Ras with GTP. The catalytic activity of SOS is also allosterically modulated by an active Ras (Ras-GTP). However, it remains poorly understood how oncogenic Ras mutants interact with SOS and modulate its activity. Here, native ion mobility-mass spectrometry is employed to monitor the assembly of the catalytic domain of SOS (SOS) with KRas and three cancer-associated mutants (G12C, G13D, and Q61H), leading to the discovery of different molecular assemblies and distinct conformers of SOS engaging KRas. We also find KRas exhibits high affinity for SOS and is a potent allosteric modulator of its activity. A structure of the KRas•SOS complex was determined using cryogenic electron microscopy providing insight into the enhanced affinity of the mutant protein. In addition, we find that KRas-GTP can allosterically increase the nucleotide exchange rate of KRas at the active site more than twofold compared to KRas-GTP. Furthermore, small-molecule Ras•SOS disruptors fail to dissociate KRas•SOS complexes, underscoring the need for more potent disruptors. Taken together, a better understanding of the interaction between oncogenic Ras mutants and SOS will provide avenues for improved therapeutic interventions.
History
DepositionOct 15, 2020Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 31, 2021Provider: repository / Type: Initial release
Revision 1.1Mar 6, 2024Group: Data collection / Database references / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / em_3d_fitting_list / pdbx_initial_refinement_model
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id / _em_3d_fitting_list.source_name / _em_3d_fitting_list.type

-
Structure visualization

Movie
  • Deposited structure unit
  • Imaged by Jmol
  • Download
  • Superimposition on EM map
  • EMDB-22857
  • Imaged by UCSF Chimera
  • Download
Movie viewer
Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

-
Assembly

Deposited unit
A: GTPase KRas
B: Son of sevenless homolog 1
C: GTPase KRas
hetero molecules


Theoretical massNumber of molelcules
Total (without water)96,7705
Polymers96,2233
Non-polymers5472
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: mass spectrometry
TypeNameSymmetry operationNumber
identity operation1_5551

-
Components

#1: Protein GTPase KRas / K-Ras 2 / Ki-Ras / c-K-ras / c-Ki-ras


Mass: 19386.848 Da / Num. of mol.: 2 / Mutation: G13D
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: KRAS, KRAS2, RASK2 / Production host: Escherichia coli (E. coli) / References: UniProt: P01116, small monomeric GTPase
#2: Protein Son of sevenless homolog 1 / SOS-1


Mass: 57449.691 Da / Num. of mol.: 1 / Fragment: UNP residues 564-1049
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SOS1 / Production host: Escherichia coli (E. coli) / References: UniProt: Q07889
#3: Chemical ChemComp-GNP / PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER


Mass: 522.196 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H17N6O13P3
Comment: GppNHp, GMPPNP, energy-carrying molecule analogue*YM
#4: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg
Has ligand of interestN

-
Experimental details

-
Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

-
Sample preparation

ComponentName: A ternary complex of KRas(G13D) and SOScat / Type: COMPLEX / Entity ID: #1-#2 / Source: RECOMBINANT
Molecular weightValue: 0.0967 MDa / Experimental value: YES
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 7.4
SpecimenConc.: 8.6 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 281 K

-
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: 105000 X / Nominal defocus max: 2500 nm / Nominal defocus min: 800 nm / Cs: 2.7 mm
Image recordingElectron dose: 65 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of real images: 5202

-
Processing

SoftwareName: PHENIX / Version: 1.18.2_3874: / Classification: refinement
EM software
IDNameVersionCategory
4CTFFIND1.4CTF correction
7Cootmodel fitting
9RELION3.1initial Euler assignment
10RELION3.1final Euler assignment
11RELION3.1classification
12RELION3D reconstruction
13PHENIXmodel refinement
CTF correctionType: PHASE FLIPPING ONLY
Particle selectionNum. of particles selected: 5749548
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.47 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 1021288 / Symmetry type: POINT
Atomic model buildingB value: 50 / Protocol: AB INITIO MODEL / Space: REAL
Atomic model buildingPDB-ID: 1XD2

1xd2


Accession code: 1XD2 / Source name: PDB / Type: experimental model
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0116727
ELECTRON MICROSCOPYf_angle_d0.7189098
ELECTRON MICROSCOPYf_dihedral_angle_d18.925886
ELECTRON MICROSCOPYf_chiral_restr0.0521004
ELECTRON MICROSCOPYf_plane_restr0.0051175

+
About Yorodumi

-
News

-
Feb 9, 2022. New format data for meta-information of EMDB entries

New format data for meta-information of EMDB entries

  • Version 3 of the EMDB header file is now the official format.
  • The previous official version 1.9 will be removed from the archive.

Related info.:EMDB header

External links:wwPDB to switch to version 3 of the EMDB data model

-
Aug 12, 2020. Covid-19 info

Covid-19 info

URL: https://pdbj.org/emnavi/covid19.php

New page: Covid-19 featured information page in EM Navigator.

Related info.:Covid-19 info / Mar 5, 2020. Novel coronavirus structure data

+
Mar 5, 2020. Novel coronavirus structure data

Novel coronavirus structure data

Related info.:Yorodumi Speices / Aug 12, 2020. Covid-19 info

External links:COVID-19 featured content - PDBj / Molecule of the Month (242)：Coronavirus Proteases

+
Jan 31, 2019. EMDB accession codes are about to change! (news from PDBe EMDB page)

EMDB accession codes are about to change! (news from PDBe EMDB page)

  • The allocation of 4 digits for EMDB accession codes will soon come to an end. Whilst these codes will remain in use, new EMDB accession codes will include an additional digit and will expand incrementally as the available range of codes is exhausted. The current 4-digit format prefixed with “EMD-” (i.e. EMD-XXXX) will advance to a 5-digit format (i.e. EMD-XXXXX), and so on. It is currently estimated that the 4-digit codes will be depleted around Spring 2019, at which point the 5-digit format will come into force.
  • The EM Navigator/Yorodumi systems omit the EMD- prefix.

Related info.:Q: What is EMD? / ID/Accession-code notation in Yorodumi/EM Navigator

External links:EMDB Accession Codes are Changing Soon! / Contact to PDBj

+
Jul 12, 2017. Major update of PDB

Major update of PDB

  • wwPDB released updated PDB data conforming to the new PDBx/mmCIF dictionary.
  • This is a major update changing the version number from 4 to 5, and with Remediation, in which all the entries are updated.
  • In this update, many items about electron microscopy experimental information are reorganized (e.g. em_software).
  • Now, EM Navigator and Yorodumi are based on the updated data.

External links:wwPDB Remediation / Enriched Model Files Conforming to OneDep Data Standards Now Available in the PDB FTP Archive

-
Yorodumi

Thousand views of thousand structures

  • Yorodumi is a browser for structure data from EMDB, PDB, SASBDB, etc.
  • This page is also the successor to EM Navigator detail page, and also detail information page/front-end page for Omokage search.
  • The word "yorodu" (or yorozu) is an old Japanese word meaning "ten thousand". "mi" (miru) is to see.

Related info.:EMDB / PDB / SASBDB / Comparison of 3 databanks / Yorodumi Search / Aug 31, 2016. New EM Navigator & Yorodumi / Yorodumi Papers / Jmol/JSmol / Function and homology information / Changes in new EM Navigator and Yorodumi

Read more