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- EMDB-43440: Homodimeric structure of HER2 S310F extracellular region -

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Basic information

Entry
Database: EMDB / ID: EMD-43440
TitleHomodimeric structure of HER2 S310F extracellular region
Map dataMain map generated from 3DFlex reconstruct
Sample
  • Complex: Homodimeric structure of Her2 S310F fused to Fc domain
    • Protein or peptide: Receptor tyrosine-protein kinase erbB-2/hIgG1 Fc domain fusion
KeywordsReceptor tyrosine kinase / HER2 / oncogenic mutation / SIGNALING 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 / RNA polymerase I core binding / immature T cell proliferation in thymus / semaphorin receptor complex / ErbB-3 class receptor binding / motor neuron axon guidance / 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 / RNA polymerase I core binding / immature T cell proliferation in thymus / semaphorin receptor complex / ErbB-3 class receptor binding / motor neuron axon guidance / Sema4D induced cell migration and growth-cone collapse / regulation of microtubule-based process / PLCG1 events in ERBB2 signaling / ERBB2-EGFR signaling pathway / neurotransmitter receptor localization to postsynaptic specialization membrane / enzyme-linked receptor protein signaling pathway / ERBB2 Activates PTK6 Signaling / neuromuscular junction development / ERBB2-ERBB3 signaling pathway / 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 / positive regulation of Rho protein signal transduction / positive regulation of MAP kinase activity / positive regulation of transcription by RNA polymerase I / ERBB2 Regulates Cell Motility / semaphorin-plexin signaling pathway / oligodendrocyte differentiation / PI3K events in ERBB2 signaling / positive regulation of protein targeting to membrane / regulation of angiogenesis / regulation of ERK1 and ERK2 cascade / Schwann cell development / coreceptor activity / Signaling by ERBB2 / TFAP2 (AP-2) family regulates transcription of growth factors and their receptors / myelination / transmembrane receptor protein tyrosine kinase activity / positive regulation of cell adhesion / GRB2 events in ERBB2 signaling / Downregulation of ERBB2:ERBB3 signaling / SHC1 events in ERBB2 signaling / cell surface receptor protein tyrosine kinase signaling pathway / basal plasma membrane / peptidyl-tyrosine phosphorylation / Constitutive Signaling by Overexpressed ERBB2 / cellular response to epidermal growth factor stimulus / positive regulation of translation / positive regulation of epithelial cell proliferation / neuromuscular junction / phosphatidylinositol 3-kinase/protein kinase B signal transduction / wound healing / Signaling by ERBB2 TMD/JMD mutants / receptor protein-tyrosine kinase / Signaling by ERBB2 ECD mutants / receptor tyrosine kinase binding / Signaling by ERBB2 KD Mutants / cellular response to growth factor stimulus / ruffle membrane / Downregulation of ERBB2 signaling / epidermal growth factor receptor signaling pathway / neuron differentiation / Constitutive Signaling by Aberrant PI3K in Cancer / transmembrane signaling receptor activity / PIP3 activates AKT signaling / myelin sheath / heart development / presynaptic membrane / PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling / RAF/MAP kinase cascade / positive regulation of cell growth / protein tyrosine kinase activity / basolateral plasma membrane / early endosome / cell surface receptor signaling pathway / cell population proliferation / protein phosphorylation / receptor complex / positive regulation of MAPK cascade / endosome membrane / intracellular signal transduction / apical plasma membrane / protein heterodimerization activity / signaling receptor binding / negative regulation of apoptotic process / perinuclear region of cytoplasm / signal transduction / nucleoplasm / ATP binding / identical protein binding / nucleus / membrane / plasma membrane / cytosol
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 / Serine-threonine/tyrosine-protein kinase, catalytic domain / Protein tyrosine and serine/threonine kinase / 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: 2.67 Å
AuthorsBang I / Koide S
Funding support1 items
OrganizationGrant numberCountry
Not funded
CitationJournal: Nat Chem Biol / Year: 2025
Title: Selective targeting of oncogenic hotspot mutations of the HER2 extracellular domain.
Authors: Injin Bang / Takamitsu Hattori / Nadia Leloup / Alexis Corrado / Atekana Nyamaa / Akiko Koide / Ken Geles / Elizabeth Buck / Shohei Koide /
Abstract: Oncogenic mutations in the extracellular domain (ECD) of cell-surface receptors could serve as tumor-specific antigens that are accessible to antibody therapeutics. Such mutations have been ...Oncogenic mutations in the extracellular domain (ECD) of cell-surface receptors could serve as tumor-specific antigens that are accessible to antibody therapeutics. Such mutations have been identified in receptor tyrosine kinases including HER2. However, it is challenging to selectively target a point mutant, while sparing the wild-type protein. Here we developed antibodies selective to HER2 S310F and S310Y, the two most common oncogenic mutations in the HER2 ECD, via combinatorial library screening and structure-guided design. Cryogenic-electron microscopy structures of the HER2 S310F homodimer and an antibody bound to HER2 S310F revealed that these antibodies recognize the mutations in a manner that mimics the dimerization arm of HER2 and thus inhibit HER2 dimerization. These antibodies as T cell engagers selectively killed a HER2 S310F-driven cancer cell line in vitro, and in vivo as a xenograft. These results validate HER2 ECD mutations as actionable therapeutic targets and offer promising candidates toward clinical development.
History
DepositionJan 18, 2024-
Header (metadata) releaseNov 6, 2024-
Map releaseNov 6, 2024-
UpdateMay 14, 2025-
Current statusMay 14, 2025Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_43440.png

Downloads & links

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Map

FileDownload / File: emd_43440.map.gz / Format: CCP4 / Size: 103 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationMain map generated from 3DFlex reconstruct
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.83 Å/pix.
x 300 pix.
= 247.5 Å		0.83 Å/pix.
x 300 pix.
= 247.5 Å		0.83 Å/pix.
x 300 pix.
= 247.5 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.825 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.006
Minimum - Maximum-0.014975231 - 0.032348346
Average (Standard dev.)0.000055236207 (±0.00078670145)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions300300300
Spacing300300300
CellA=B=C: 247.5 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: Half map A from 3Dflex reconstruct

Fileemd_43440_half_map_1.map
AnnotationHalf map A from 3Dflex reconstruct
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: Half map B from 3Dflex reconstruct

Fileemd_43440_half_map_2.map
AnnotationHalf map B from 3Dflex reconstruct
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Homodimeric structure of Her2 S310F fused to Fc domain

EntireName: Homodimeric structure of Her2 S310F fused to Fc domain
Components
  • Complex: Homodimeric structure of Her2 S310F fused to Fc domain
    • Protein or peptide: Receptor tyrosine-protein kinase erbB-2/hIgG1 Fc domain fusion

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Supramolecule #1: Homodimeric structure of Her2 S310F fused to Fc domain

SupramoleculeName: Homodimeric structure of Her2 S310F fused to Fc domain
type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Details: Homodimeric structure of HER2 S310F is obtained by fusing it to Fc domain, although the density for Fc domain is not clear.
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 200 kDa/nm

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Macromolecule #1: Receptor tyrosine-protein kinase erbB-2/hIgG1 Fc domain fusion

MacromoleculeName: Receptor tyrosine-protein kinase erbB-2/hIgG1 Fc domain fusion
type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO / EC number: receptor protein-tyrosine kinase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 99.277641 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 FCTLVCPLHN 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 QRASPLTPGS RSPKSCD KT HTCPPCPAPE LLGGPSVFLF PPKPKDTLMI SRTPEVTCVV VDVSHEDPEV KFNWYVDGVE VHNAKTKPRE EQYNSTYR V VSVLTVLHQD WLNGKEYKCK VSNKALPAPI EKTISKAKGQ PREPQVYTLP PSREEMTKNQ VSLTCLVKGF YPSDIAVEW ESNGQPENNY KTTPPVLDSD GSFFLYSKLT VDKSRWQQGN VFSCSVMHEA LHNHYTQKSL SLSPGKLEGG GGLNDIFEAQ KIEWHESRH HHHHH

UniProtKB: Receptor tyrosine-protein kinase erbB-2

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.5
Component:
ConcentrationFormulaName
150.0 mMNaClSodium chloride
20.0 mMC4H11NO3Tris
0.7 mMC20H25F13O11Fluorinated octyl maltoside

Details: 20mM Tris, 150mM NaCl, 0.7mM Fluorinated octyl maltoside
GridModel: Quantifoil R0.6/1 / Material: COPPER / Mesh: 300 / Support film - Material: GOLD / Support film - topology: HOLEY / Support film - Film thickness: 35
VitrificationCryogen name: ETHANE / Chamber humidity: 95 % / Chamber temperature: 277.15 K / Instrument: FEI VITROBOT MARK IV / Details: Vitrified.

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 51.89 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.1 µm / Nominal defocus min: 0.7000000000000001 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionSoftware - Name: cryoSPARC (ver. 4.2.1) / Software - details: PatchCTF / Type: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

7mn6


Details: Chain B
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.67 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 110685
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. 4.2.1)
Final angle assignmentType: MAXIMUM LIKELIHOOD

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Atomic model buiding 1

Initial modelPDB ID:

7mn6


Chain - Chain ID: B / Chain - Residue range: 24-542 / Chain - Source name: PDB / Chain - Initial model type: experimental model
RefinementSpace: REAL / Protocol: FLEXIBLE FIT
Output model

PDB-8vqe:
Homodimeric structure of HER2 S310F extracellular region

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