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- EMDB-49573: Cryo-EM structure of a de-novo designed binder NY1-B04 in complex... -

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Entry
Database: EMDB / ID: EMD-49573
TitleCryo-EM structure of a de-novo designed binder NY1-B04 in complex with HLA-A*02:01 and NY-ESO-1-derived peptide SLLMWITQC
Map data
Sample
  • Complex: de-novo designed binder NY1-B04 in complex with HLA-A*02:01 and NY-ESO-1-derived peptide SLLMWITQC
    • Protein or peptide: De-novo designed binder NY1-B04
    • Protein or peptide: HLA class I histocompatibility antigen, A alpha chain
    • Protein or peptide: Beta-2-microglobulin
    • Protein or peptide: NY-ESO-1-derived peptide SLLMWITQC
KeywordsDe novo-designed pMHC binders / HLA / IMMUNE SYSTEM
Function / homology
Function and homology information


antigen processing and presentation of peptide antigen via MHC class I / negative regulation of receptor binding / early endosome lumen / Nef mediated downregulation of MHC class I complex cell surface expression / DAP12 interactions / transferrin transport / cellular response to iron ion / lumenal side of endoplasmic reticulum membrane / Endosomal/Vacuolar pathway / Antigen Presentation: Folding, assembly and peptide loading of class I MHC ...antigen processing and presentation of peptide antigen via MHC class I / negative regulation of receptor binding / early endosome lumen / Nef mediated downregulation of MHC class I complex cell surface expression / DAP12 interactions / transferrin transport / cellular response to iron ion / lumenal side of endoplasmic reticulum membrane / Endosomal/Vacuolar pathway / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / peptide antigen assembly with MHC class II protein complex / cellular response to iron(III) ion / MHC class II protein complex / negative regulation of forebrain neuron differentiation / antigen processing and presentation of exogenous protein antigen via MHC class Ib, TAP-dependent / ER to Golgi transport vesicle membrane / peptide antigen assembly with MHC class I protein complex / regulation of iron ion transport / regulation of erythrocyte differentiation / HFE-transferrin receptor complex / response to molecule of bacterial origin / MHC class I peptide loading complex / T cell mediated cytotoxicity / positive regulation of T cell cytokine production / antigen processing and presentation of endogenous peptide antigen via MHC class I / antigen processing and presentation of exogenous peptide antigen via MHC class II / positive regulation of immune response / MHC class I protein complex / positive regulation of T cell activation / peptide antigen binding / positive regulation of receptor-mediated endocytosis / negative regulation of neurogenesis / cellular response to nicotine / positive regulation of T cell mediated cytotoxicity / multicellular organismal-level iron ion homeostasis / specific granule lumen / phagocytic vesicle membrane / recycling endosome membrane / Interferon gamma signaling / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / negative regulation of epithelial cell proliferation / MHC class II protein complex binding / Modulation by Mtb of host immune system / late endosome membrane / sensory perception of smell / positive regulation of cellular senescence / tertiary granule lumen / DAP12 signaling / T cell differentiation in thymus / negative regulation of neuron projection development / ER-Phagosome pathway / protein refolding / early endosome membrane / protein homotetramerization / amyloid fibril formation / intracellular iron ion homeostasis / learning or memory / immune response / endoplasmic reticulum lumen / Amyloid fiber formation / Golgi membrane / lysosomal membrane / external side of plasma membrane / focal adhesion / Neutrophil degranulation / SARS-CoV-2 activates/modulates innate and adaptive immune responses / structural molecule activity / cell surface / endoplasmic reticulum / Golgi apparatus / protein homodimerization activity / extracellular space / extracellular exosome / extracellular region / metal ion binding / identical protein binding / membrane / plasma membrane / cytosol
Similarity search - Function
MHC class I, alpha chain, C-terminal / MHC_I C-terminus / MHC class I alpha chain, alpha1 alpha2 domains / Class I Histocompatibility antigen, domains alpha 1 and 2 / Beta-2-Microglobulin / : / MHC class I-like antigen recognition-like / MHC class I-like antigen recognition-like superfamily / MHC classes I/II-like antigen recognition protein / : ...MHC class I, alpha chain, C-terminal / MHC_I C-terminus / MHC class I alpha chain, alpha1 alpha2 domains / Class I Histocompatibility antigen, domains alpha 1 and 2 / Beta-2-Microglobulin / : / MHC class I-like antigen recognition-like / MHC class I-like antigen recognition-like superfamily / MHC classes I/II-like antigen recognition protein / : / Immunoglobulin/major histocompatibility complex, conserved site / Immunoglobulins and major histocompatibility complex proteins signature. / Immunoglobulin C-Type / Immunoglobulin C1-set / Immunoglobulin C1-set domain / Ig-like domain profile. / Immunoglobulin-like domain / Immunoglobulin-like domain superfamily / Immunoglobulin-like fold
Similarity search - Domain/homology
Beta-2-microglobulin / MHC class I antigen
Similarity search - Component
Biological speciesBacillus subtilis (bacteria) / synthetic construct (others) / Homo sapiens (human) / Escherichia coli (E. coli)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.8 Å
AuthorsGharpure A / Fernandez-Quintero ML / Ward AB
Funding support1 items
OrganizationGrant numberCountry
Not funded
CitationJournal: Science / Year: 2025
Title: De novo-designed pMHC binders facilitate T cell-mediated cytotoxicity toward cancer cells.
Authors: Kristoffer Haurum Johansen / Darian Stephan Wolff / Beatrice Scapolo / Monica L Fernández-Quintero / Charlotte Risager Christensen / Johannes R Loeffler / Esperanza Rivera-de-Torre / Max D ...Authors: Kristoffer Haurum Johansen / Darian Stephan Wolff / Beatrice Scapolo / Monica L Fernández-Quintero / Charlotte Risager Christensen / Johannes R Loeffler / Esperanza Rivera-de-Torre / Max D Overath / Kamilla Kjærgaard Munk / Oliver Morell / Marie Christine Viuff / Iñigo Lacunza / Alberte T Damm Englund / Mathilde Due / Anant Gharpure / Stefano Forli / Carlos Rodriguez Pardo / Tripti Tamhane / Emma Qingjie Andersen / Kasper Haldrup Björnsson / Jordan Sylvester Fernandes / Lasse Frank Voss / Suthimon Thumtecho / Andrew B Ward / Maria Ormhøj / Sine Reker Hadrup / Timothy P Jenkins /
Abstract: The recognition of intracellular antigens by CD8 T cells through T cell receptors (TCRs) is central for adaptive immunity against infections and cancer. However, the identification of TCRs from ...The recognition of intracellular antigens by CD8 T cells through T cell receptors (TCRs) is central for adaptive immunity against infections and cancer. However, the identification of TCRs from patient material remains complex. We present a rapid de novo minibinder (miBd) design platform leveraging state-of-the-art generative models to engineer miBds targeting the cancer-associated peptide-bound major histocompatibility complex (pMHC) SLLMWITQC/HLA-A*02:01 (NY-ESO-1). Incorporating in silico cross-panning enabled computational prescreening of specificity, and molecular dynamics simulations allowed for improved predictability of in vitro success. We identified a high-affinity NY-ESO-1 binder and confirmed its structure using cryo-electron microscopy, which, when incorporated in a chimeric antigen receptor, induced killing of NY-ESO-1 melanoma cells. We further designed and validated binders to a neoantigen pMHC complex, RVTDESILSY/HLA-A*01:01, with unknown structure, demonstrating the potential for precision immunotherapy.
History
DepositionMar 5, 2025-
Header (metadata) releaseJul 23, 2025-
Map releaseJul 23, 2025-
UpdateAug 6, 2025-
Current statusAug 6, 2025Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_49573.png

Downloads & links

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Map

FileDownload / File: emd_49573.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
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Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.72 Å/pix.
x 256 pix.
= 183.808 Å		0.72 Å/pix.
x 256 pix.
= 183.808 Å		0.72 Å/pix.
x 256 pix.
= 183.808 Å

Surface

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Images are generated by Spider.

Voxel sizeX=Y=Z: 0.718 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.09
Minimum - Maximum-0.8628758 - 1.023015
Average (Standard dev.)-0.000097440585 (±0.0239402)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 183.808 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_49573_half_map_1.map
Projections & Slices
AxesZYX

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Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_49573_half_map_2.map
Projections & Slices
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Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : de-novo designed binder NY1-B04 in complex with HLA-A*02:01 and N...

EntireName: de-novo designed binder NY1-B04 in complex with HLA-A*02:01 and NY-ESO-1-derived peptide SLLMWITQC
Components
  • Complex: de-novo designed binder NY1-B04 in complex with HLA-A*02:01 and NY-ESO-1-derived peptide SLLMWITQC
    • Protein or peptide: De-novo designed binder NY1-B04
    • Protein or peptide: HLA class I histocompatibility antigen, A alpha chain
    • Protein or peptide: Beta-2-microglobulin
    • Protein or peptide: NY-ESO-1-derived peptide SLLMWITQC

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Supramolecule #1: de-novo designed binder NY1-B04 in complex with HLA-A*02:01 and N...

SupramoleculeName: de-novo designed binder NY1-B04 in complex with HLA-A*02:01 and NY-ESO-1-derived peptide SLLMWITQC
type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Bacillus subtilis (bacteria)
Molecular weightTheoretical: 58 kDa/nm

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Macromolecule #1: De-novo designed binder NY1-B04

MacromoleculeName: De-novo designed binder NY1-B04 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 15.054265 KDa
Recombinant expressionOrganism: Bacillus subtilis (bacteria)
SequenceString:
MKEELRAAAA ELLAAAEALA EELRRLGLEE AAAHVLAAAR HVAAALELIA ATPASELNPE LKREVAAHLR EAAAHFEAAA EIVAAEDPL AGAMLREAAL AARSMAAYVL HSSPEEALQQ AAVFATGLAG AMLTMTGLVR ERLAAR

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Macromolecule #2: HLA class I histocompatibility antigen, A alpha chain

MacromoleculeName: HLA class I histocompatibility antigen, A alpha chain / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 31.951316 KDa
Recombinant expressionOrganism: Escherichia coli 'BL21-Gold(DE3)pLysS AG' (bacteria)
SequenceString: GSHSMRYFFT SVSRPGRGEP RFIAVGYVDD TQFVRFDSDA ASQRMEPRAP WIEQEGPEYW DGETRKVKAH SQTHRVDLGT LRGYYNQSE AGSHTVQRMY GCDVGSDWRF LRGYHQYAYD GKDYIALKED LRSWTAADMA AQTTKHKWEA AHVAEQLRAY L EGTCVEWL ...String:
GSHSMRYFFT SVSRPGRGEP RFIAVGYVDD TQFVRFDSDA ASQRMEPRAP WIEQEGPEYW DGETRKVKAH SQTHRVDLGT LRGYYNQSE AGSHTVQRMY GCDVGSDWRF LRGYHQYAYD GKDYIALKED LRSWTAADMA AQTTKHKWEA AHVAEQLRAY L EGTCVEWL RRYLENGKET LQRTDAPKTH MTHHAVSDHE ATLRCWALSF YPAEITLTWQ RDGEDQTQDT ELVETRPAGD GT FQKWAAV VVPSGQEQRY TCHVQHEGLP KPLTLRWEP

UniProtKB: MHC class I antigen

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Macromolecule #3: Beta-2-microglobulin

MacromoleculeName: Beta-2-microglobulin / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 11.879356 KDa
Recombinant expressionOrganism: Escherichia coli 'BL21-Gold(DE3)pLysS AG' (bacteria)
SequenceString:
MIQRTPKIQV YSRHPAENGK SNFLNCYVSG FHPSDIEVDL LKNGERIEKV EHSDLSFSKD WSFYLLYYTE FTPTEKDEYA CRVNHVTLS QPKIVKWDRD M

UniProtKB: Beta-2-microglobulin

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Macromolecule #4: NY-ESO-1-derived peptide SLLMWITQC

MacromoleculeName: NY-ESO-1-derived peptide SLLMWITQC / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 1.094347 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
SLLMWITQC

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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: 7.4
GridModel: Quantifoil R1.2/1.3 / Material: GOLD / Mesh: 300 / Support film - Material: GOLD / Support film - topology: HOLEY
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeTFS GLACIOS
Image recordingFilm or detector model: FEI FALCON IV (4k x 4k) / Average electron dose: 59.82 e/Å2
Electron beamAcceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 50.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: DIFFRACTION / Cs: 2.7 mm / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.9 µm

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Image processing

Particle selectionNumber selected: 343587
Details: two collections one with and one without tilt resulted in 1627079 + 1808795 particles
CTF correctionType: NONE
Startup modelType of model: INSILICO MODEL
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.8 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 106421
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD

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