[English] 日本語
Yorodumi
- EMDB-17993: Atomic structure and conformational variability of the HER2-Trast... -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: EMDB / ID: EMD-17993
TitleAtomic structure and conformational variability of the HER2-Trastuzumab-Pertuzumab complex
Map dataComposite map visible in figure 1 d
Sample
  • Complex: Ternary complex of her2-trastuzumab-pertuzumab Fabs
    • Protein or peptide: Trastuzumab Fab light chain
    • Protein or peptide: Trastuzumab Fab heavy chain
    • Protein or peptide: Pertuzumab Fab light chain
    • Protein or peptide: Pertuzumab Fab heavy chain
  • Protein or peptide: Receptor tyrosine-protein kinase erbB-2
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
KeywordsErbB-2 / Pertuzumab / Trastuzumab / Ternary complex / Protein / Flexibility / Continuous conformation / Cryo-EM / Single particle analysis / STRUCTURAL PROTEIN
Function / homology
Function and homology information


negative regulation of immature T cell proliferation in thymus / ERBB3:ERBB2 complex / ERBB2-ERBB4 signaling pathway / GRB7 events in ERBB2 signaling / immature T cell proliferation in thymus / RNA polymerase I core binding / regulation of microtubule-based process / ErbB-3 class receptor binding / semaphorin receptor complex / Sema4D induced cell migration and growth-cone collapse ...negative regulation of immature T cell proliferation in thymus / ERBB3:ERBB2 complex / ERBB2-ERBB4 signaling pathway / GRB7 events in ERBB2 signaling / immature T cell proliferation in thymus / RNA polymerase I core binding / regulation of microtubule-based process / ErbB-3 class receptor binding / semaphorin receptor complex / Sema4D induced cell migration and growth-cone collapse / motor neuron axon guidance / neurotransmitter receptor localization to postsynaptic specialization membrane / PLCG1 events in ERBB2 signaling / ERBB2-EGFR signaling pathway / neuromuscular junction development / positive regulation of Rho protein signal transduction / ERBB2 Activates PTK6 Signaling / Drug-mediated inhibition of ERBB2 signaling / Resistance of ERBB2 KD mutants to trastuzumab / Resistance of ERBB2 KD mutants to sapitinib / Resistance of ERBB2 KD mutants to tesevatinib / Resistance of ERBB2 KD mutants to neratinib / Resistance of ERBB2 KD mutants to osimertinib / Resistance of ERBB2 KD mutants to afatinib / Resistance of ERBB2 KD mutants to AEE788 / Resistance of ERBB2 KD mutants to lapatinib / Drug resistance in ERBB2 TMD/JMD mutants / enzyme-linked receptor protein signaling pathway / positive regulation of transcription by RNA polymerase I / ERBB2-ERBB3 signaling pathway / oligodendrocyte differentiation / ERBB2 Regulates Cell Motility / semaphorin-plexin signaling pathway / PI3K events in ERBB2 signaling / positive regulation of cell adhesion / positive regulation of protein targeting to membrane / regulation of angiogenesis / coreceptor activity / Schwann cell development / Signaling by ERBB2 / cellular response to epidermal growth factor stimulus / myelination / Downregulation of ERBB2:ERBB3 signaling / GRB2 events in ERBB2 signaling / TFAP2 (AP-2) family regulates transcription of growth factors and their receptors / transmembrane receptor protein tyrosine kinase activity / SHC1 events in ERBB2 signaling / Constitutive Signaling by Overexpressed ERBB2 / neurogenesis / basal plasma membrane / regulation of ERK1 and ERK2 cascade / phosphatidylinositol 3-kinase/protein kinase B signal transduction / positive regulation of translation / positive regulation of epithelial cell proliferation / cell surface receptor protein tyrosine kinase signaling pathway / Signaling by ERBB2 TMD/JMD mutants / positive regulation of MAP kinase activity / wound healing / neuromuscular junction / Signaling by ERBB2 ECD mutants / neuron differentiation / Signaling by ERBB2 KD Mutants / receptor protein-tyrosine kinase / receptor tyrosine kinase binding / cellular response to growth factor stimulus / Downregulation of ERBB2 signaling / ruffle membrane / peptidyl-tyrosine phosphorylation / Constitutive Signaling by Aberrant PI3K in Cancer / transmembrane signaling receptor activity / PIP3 activates AKT signaling / myelin sheath / presynaptic membrane / heart development / PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling / RAF/MAP kinase cascade / positive regulation of cell growth / basolateral plasma membrane / protein tyrosine kinase activity / positive regulation of MAPK cascade / early endosome / cell surface receptor signaling pathway / receptor complex / endosome membrane / intracellular signal transduction / apical plasma membrane / positive regulation of protein phosphorylation / protein heterodimerization activity / protein phosphorylation / signaling receptor binding / positive regulation of cell population proliferation / negative regulation of apoptotic process / perinuclear region of cytoplasm / signal transduction / nucleoplasm / ATP binding / membrane / identical protein binding / nucleus / plasma membrane
Similarity search - Function
: / Epidermal growth factor receptor transmembrane-juxtamembrane segment / Tyrosine protein kinase, EGF/ERB/XmrK receptor / Growth factor receptor domain 4 / Growth factor receptor domain IV / Receptor L-domain / Furin-like cysteine-rich domain / Receptor L-domain superfamily / Furin-like cysteine rich region / Receptor L domain ...: / Epidermal growth factor receptor transmembrane-juxtamembrane segment / Tyrosine protein kinase, EGF/ERB/XmrK receptor / Growth factor receptor domain 4 / Growth factor receptor domain IV / Receptor L-domain / Furin-like cysteine-rich domain / Receptor L-domain superfamily / Furin-like cysteine rich region / Receptor L domain / Furin-like repeat / Furin-like repeats / Growth factor receptor cysteine-rich domain superfamily / Tyrosine-protein kinase, catalytic domain / Tyrosine kinase, catalytic domain / Tyrosine protein kinases specific active-site signature. / Tyrosine-protein kinase, active site / Protein tyrosine and serine/threonine kinase / Serine-threonine/tyrosine-protein kinase, catalytic domain / Protein kinase, ATP binding site / Protein kinases ATP-binding region signature. / Protein kinase domain profile. / Protein kinase domain / Protein kinase-like domain superfamily
Similarity search - Domain/homology
Receptor tyrosine-protein kinase erbB-2
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.17 Å
AuthorsRuedas R / Vuillemot R / Tubiana T / Winter JM / Pieri L / Arteni AA / Samson C / Jonic J / Mathieu M / Bressanelli S
Funding support France, 2 items
OrganizationGrant numberCountry
Centre National de la Recherche Scientifique (CNRS) France
Other private
CitationJournal: J Struct Biol / Year: 2024
Title: Structure and conformational variability of the HER2-trastuzumab-pertuzumab complex.
Authors: Rémi Ruedas / Rémi Vuillemot / Thibault Tubiana / Jean-Marie Winter / Laura Pieri / Ana-Andreea Arteni / Camille Samson / Slavica Jonic / Magali Mathieu / Stéphane Bressanelli /
Abstract: Single particle analysis from cryogenic transmission electron microscopy (cryo-EM) is particularly attractive for complexes for which structure prediction remains intractable, such as antibody- ...Single particle analysis from cryogenic transmission electron microscopy (cryo-EM) is particularly attractive for complexes for which structure prediction remains intractable, such as antibody-antigen complexes. Here we obtain the detailed structure of a particularly difficult complex between human epidermal growth factor receptor 2 (HER2) and the antigen-binding fragments from two distinct therapeutic antibodies binding to distant parts of the flexible HER2, pertuzumab and trastuzumab (HTP). We highlight the strengths and limitations of current data processing software in dealing with various kinds of heterogeneities, particularly continuous conformational heterogeneity, and in describing the motions that can be extracted from our dataset. Our HTP structure provides a more detailed view than the one previously available for this ternary complex. This allowed us to pinpoint a previously overlooked loop in domain IV that may be involved both in binding of trastuzumab and in HER2 dimerization. This finding may contribute to explain the synergistic anticancer effect of the two antibodies. We further propose that the flexibility of the HTP complex, beyond the difficulties it causes for cryo-EM analysis, actually reflects regulation of HER2 signaling and its inhibition by therapeutic antibodies. Notably we obtain our best data with ultra-thin continuous carbon grids, showing that with current cameras their use to alleviate particle misdistribution is compatible with a protein complex of only 162 kDa. Perhaps most importantly, we provide here a dataset for such a smallish protein complex for further development of software accounting for continuous conformational heterogeneity in cryo-EM images.
History
DepositionJul 20, 2023-
Header (metadata) releaseFeb 21, 2024-
Map releaseFeb 21, 2024-
UpdateMay 22, 2024-
Current statusMay 22, 2024Processing site: PDBe / Status: Released

-
Structure visualization

Supplemental images

emd_17993.png

Downloads & links

-
Map

FileDownload / File: emd_17993.map.gz / Format: CCP4 / Size: 83.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationComposite map visible in figure 1 d
Voxel sizeX=Y=Z: 1.16 Å
Density
Contour LevelBy AUTHOR: 14.0
Minimum - Maximum-34.793903 - 63.028584000000002
Average (Standard dev.)0.0017327087 (±1.1724592)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions280280280
Spacing280280280
CellA=B=C: 324.8 Å
α=β=γ: 90.0 °

-
Supplemental data

-
Sample components

-
Entire : Ternary complex of her2-trastuzumab-pertuzumab Fabs

EntireName: Ternary complex of her2-trastuzumab-pertuzumab Fabs
Components
  • Complex: Ternary complex of her2-trastuzumab-pertuzumab Fabs
    • Protein or peptide: Trastuzumab Fab light chain
    • Protein or peptide: Trastuzumab Fab heavy chain
    • Protein or peptide: Pertuzumab Fab light chain
    • Protein or peptide: Pertuzumab Fab heavy chain
  • Protein or peptide: Receptor tyrosine-protein kinase erbB-2
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose

-
Supramolecule #1: Ternary complex of her2-trastuzumab-pertuzumab Fabs

SupramoleculeName: Ternary complex of her2-trastuzumab-pertuzumab Fabs / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#4
Details: Fab fragment from trastuzumab and pertuzumab linked to the extracellular domain of erbb2 (her2)
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 171.364 KDa

-
Macromolecule #1: Trastuzumab Fab light chain

MacromoleculeName: Trastuzumab Fab light chain / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 23.466031 KDa
Recombinant expressionOrganism: Cricetulus griseus (Chinese hamster)
SequenceString: DIQMTQSPSS LSASVGDRVT ITCRASQDVN TAVAWYQQKP GKAPKLLIYS ASFLYSGVPS RFSGSRSGTD FTLTISSLQP EDFATYYCQ QHYTTPPTFG QGTKVEIKRT VAAPSVFIFP PSDEQLKSGT ASVVCLLNNF YPREAKVQWK VDNALQSGNS Q ESVTEQDS ...String:
DIQMTQSPSS LSASVGDRVT ITCRASQDVN TAVAWYQQKP GKAPKLLIYS ASFLYSGVPS RFSGSRSGTD FTLTISSLQP EDFATYYCQ QHYTTPPTFG QGTKVEIKRT VAAPSVFIFP PSDEQLKSGT ASVVCLLNNF YPREAKVQWK VDNALQSGNS Q ESVTEQDS KDSTYSLSST LTLSKADYEK HKVYACEVTH QGLSSPVTKS FNRGEC

-
Macromolecule #2: Trastuzumab Fab heavy chain

MacromoleculeName: Trastuzumab Fab heavy chain / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 23.42518 KDa
Recombinant expressionOrganism: Cricetulus griseus (Chinese hamster)
SequenceString: EVQLVESGGG LVQPGGSLRL SCAASGFNIK DTYIHWVRQA PGKGLEWVAR IYPTNGYTRY ADSVKGRFTI SADTSKNTAY LQMNSLRAE DTAVYYCSRW GGDGFYAMDY WGQGTLVTVS SASTKGPSVF PLAPSSKSTS GGTAALGCLV KDYFPEPVTV S WNSGALTS ...String:
EVQLVESGGG LVQPGGSLRL SCAASGFNIK DTYIHWVRQA PGKGLEWVAR IYPTNGYTRY ADSVKGRFTI SADTSKNTAY LQMNSLRAE DTAVYYCSRW GGDGFYAMDY WGQGTLVTVS SASTKGPSVF PLAPSSKSTS GGTAALGCLV KDYFPEPVTV S WNSGALTS GVHTFPAVLQ SSGLYSLSSV VTVPSSSLGT QTYICNVNHK PSNTKVDKKV EP

-
Macromolecule #3: Pertuzumab Fab light chain

MacromoleculeName: Pertuzumab Fab light chain / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 23.548152 KDa
Recombinant expressionOrganism: Cricetulus griseus (Chinese hamster)
SequenceString: DIQMTQSPSS LSASVGDRVT ITCKASQDVS IGVAWYQQKP GKAPKLLIYS ASYRYTGVPS RFSGSGSGTD FTLTISSLQP EDFATYYCQ QYYIYPYTFG QGTKVEIKRT VAAPSVFIFP PSDEQLKSGT ASVVCLLNNF YPREAKVQWK VDNALQSGNS Q ESVTEQDS ...String:
DIQMTQSPSS LSASVGDRVT ITCKASQDVS IGVAWYQQKP GKAPKLLIYS ASYRYTGVPS RFSGSGSGTD FTLTISSLQP EDFATYYCQ QYYIYPYTFG QGTKVEIKRT VAAPSVFIFP PSDEQLKSGT ASVVCLLNNF YPREAKVQWK VDNALQSGNS Q ESVTEQDS KDSTYSLSST LTLSKADYEK HKVYACEVTH QGLSSPVTKS FNRGEC

-
Macromolecule #4: Pertuzumab Fab heavy chain

MacromoleculeName: Pertuzumab Fab heavy chain / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 23.674486 KDa
Recombinant expressionOrganism: Cricetulus griseus (Chinese hamster)
SequenceString: EVQLVESGGG LVQPGGSLRL SCAASGFTFT DYTMDWVRQA PGKGLEWVAD VNPNSGGSIY NQRFKGRFTL SVDRSKNTLY LQMNSLRAE DTAVYYCARN LGPSFYFDYW GQGTLVTVSS ASTKGPSVFP LAPSSKSTSG GTAALGCLVK DYFPEPVTVS W NSGALTSG ...String:
EVQLVESGGG LVQPGGSLRL SCAASGFTFT DYTMDWVRQA PGKGLEWVAD VNPNSGGSIY NQRFKGRFTL SVDRSKNTLY LQMNSLRAE DTAVYYCARN LGPSFYFDYW GQGTLVTVSS ASTKGPSVFP LAPSSKSTSG GTAALGCLVK DYFPEPVTVS W NSGALTSG VHTFPAVLQS SGLYSLSSVV TVPSSSLGTQ TYICNVNHKP SNTKVDKKVE PKSC

-
Macromolecule #5: Receptor tyrosine-protein kinase erbB-2

MacromoleculeName: Receptor tyrosine-protein kinase erbB-2 / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 68.794086 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: TQVCTGTDMK LRLPASPETH LDMLRHLYQG CQVVQGNLEL TYLPTNASLS FLQDIQEVQG YVLIAHNQVR QVPLQRLRIV RGTQLFEDN YALAVLDNGD PLNNTTPVTG ASPGGLRELQ LRSLTEILKG GVLIQRNPQL CYQDTILWKD IFHKNNQLAL T LIDTNRSR ...String:
TQVCTGTDMK LRLPASPETH LDMLRHLYQG CQVVQGNLEL TYLPTNASLS FLQDIQEVQG YVLIAHNQVR QVPLQRLRIV RGTQLFEDN YALAVLDNGD PLNNTTPVTG ASPGGLRELQ LRSLTEILKG GVLIQRNPQL CYQDTILWKD IFHKNNQLAL T LIDTNRSR ACHPCSPMCK GSRCWGESSE DCQSLTRTVC AGGCARCKGP LPTDCCHEQC AAGCTGPKHS DCLACLHFNH SG ICELHCP ALVTYNTDTF ESMPNPEGRY TFGASCVTAC PYNYLSTDVG SCTLVCPLHN QEVTAEDGTQ RCEKCSKPCA RVC YGLGME HLREVRAVTS ANIQEFAGCK KIFGSLAFLP ESFDGDPASN TAPLQPEQLQ VFETLEEITG YLYISAWPDS LPDL SVFQN LQVIRGRILH NGAYSLTLQG LGISWLGLRS LRELGSGLAL IHHNTHLCFV HTVPWDQLFR NPHQALLHTA NRPED ECVG EGLACHQLCA RGHCWGPGPT QCVNCSQFLR GQECVEECRV LQGLPREYVN ARHCLPCHPE CQPQNGSVTC FGPEAD QCV ACAHYKDPPF CVARCPSGVK PDLSYMPIWK FPDEEGACQP CPINCTHSCV DLDDKGCPAE Q

UniProtKB: Receptor tyrosine-protein kinase erbB-2

-
Macromolecule #7: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 7 / Number of copies: 3 / Formula: NAG
Molecular weightTheoretical: 221.208 Da
Chemical component information

ChemComp-NAG:
2-acetamido-2-deoxy-beta-D-glucopyranose / N-Acetylglucosamine

-
Experimental details

-
Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

-
Sample preparation

Concentration0.12 mg/mL
BufferpH: 7.5
Component:
ConcentrationFormulaName
10.0 mMC8H18N2O4SHEPES
150.0 mMNaClSodium chloridesodium chloride
GridModel: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 400 / Support film - Material: CARBON / Support film - topology: CONTINUOUS / Support film - Film thickness: 2 / Pretreatment - Type: PLASMA CLEANING / Pretreatment - Time: 20 sec. / Pretreatment - Atmosphere: AIR / Details: 12 mAu
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 288.15 K / Instrument: FEI VITROBOT MARK IV

-
Electron microscopy

MicroscopeTFS GLACIOS
Electron beamAcceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Cs: 2.1 mm / Nominal defocus max: 2.6 µm / Nominal defocus min: 0.8 µm / Nominal magnification: 240000
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: HELIUM
Image recordingFilm or detector model: FEI FALCON IV (4k x 4k) / Digitization - Dimensions - Width: 4096 pixel / Digitization - Dimensions - Height: 4096 pixel / Number grids imaged: 1 / Number real images: 8928 / Average exposure time: 4.71 sec. / Average electron dose: 60.0 e/Å2

-
Image processing

Particle selectionNumber selected: 2954825
Startup modelType of model: OTHER
Details: 1z8z and 1s78 pdb were used to build the startup model.
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. 4.1.2)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. 4.1.2)
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.17 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. 4.1.2) / Number images used: 711008
FSC plot (resolution estimation)

-
Atomic model buiding 1

Initial model
ChainPDB ID
source_name: AlphaFold, initial_model_type: in silico model
source_name: PDB, initial_model_type: experimental model

1n8z

chain_id: C, source_name: PDB, initial_model_type: experimental model

1s78

chain_id: D, source_name: PDB, initial_model_type: experimental model

1s78

source_name: PDB, initial_model_type: experimental model

6oge

RefinementSpace: REAL / Protocol: RIGID BODY FIT
Output model

PDB-8pwh:
Atomic structure and conformational variability of the HER2-Trastuzumab-Pertuzumab complex

+
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