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- EMDB-60596: Cryo-EM structure of BTN2A1-BTN3A1-BTN3A2 -

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Basic information

Entry
Database: EMDB / ID: EMD-60596
TitleCryo-EM structure of BTN2A1-BTN3A1-BTN3A2
Map data
Sample
  • Complex: complex
    • Protein or peptide: Butyrophilin subfamily 2 member A1
    • Protein or peptide: Butyrophilin subfamily 3 member A2
    • Protein or peptide: Butyrophilin subfamily 3 member A1
  • Ligand: (2E)-4-hydroxy-3-methylbut-2-en-1-yl trihydrogen diphosphate
Keywordscomplex / immune / IMMUNE SYSTEM
Function / homology
Function and homology information


Butyrophilin (BTN) family interactions / T cell mediated immunity / activated T cell proliferation / regulation of cytokine production / positive regulation of cytokine production / lipid metabolic process / positive regulation of type II interferon production / T cell receptor signaling pathway / adaptive immune response / external side of plasma membrane ...Butyrophilin (BTN) family interactions / T cell mediated immunity / activated T cell proliferation / regulation of cytokine production / positive regulation of cytokine production / lipid metabolic process / positive regulation of type II interferon production / T cell receptor signaling pathway / adaptive immune response / external side of plasma membrane / signaling receptor binding / membrane / plasma membrane
Similarity search - Function
Butyrophilin subfamily 1/2, SPRY/PRY domain / Butyrophilin subfamily 3, PRY/SPRY domain / : / : / Butyrophilin subfamily 3 member A2-like, Ig-C domain / SPRY-associated domain / SPRY-associated / PRY / Butyrophylin-like, SPRY domain / SPRY domain ...Butyrophilin subfamily 1/2, SPRY/PRY domain / Butyrophilin subfamily 3, PRY/SPRY domain / : / : / Butyrophilin subfamily 3 member A2-like, Ig-C domain / SPRY-associated domain / SPRY-associated / PRY / Butyrophylin-like, SPRY domain / SPRY domain / B30.2/SPRY domain / B30.2/SPRY domain profile. / B30.2/SPRY domain superfamily / Domain in SPla and the RYanodine Receptor. / SPRY domain / Immunoglobulin V-Type / Immunoglobulin V-set domain / Immunoglobulin V-set domain / Immunoglobulin subtype / Immunoglobulin / Concanavalin A-like lectin/glucanase domain superfamily / Ig-like domain profile. / Immunoglobulin-like domain / Immunoglobulin-like domain superfamily / Immunoglobulin-like fold
Similarity search - Domain/homology
Butyrophilin subfamily 3 member A1 / Butyrophilin subfamily 3 member A2 / Butyrophilin subfamily 2 member A1
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 4.12 Å
AuthorsGao W / Zheng J / Zhu Y / Huang Z
Funding support China, 1 items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC) China
CitationJournal: To Be Published
Title: Cryo-EM structure of BTN2A1-BTN3A1-BTN3A2
Authors: Gao W / Zheng J / Zhu Y / Huang Z
History
DepositionJun 20, 2024-
Header (metadata) releaseJun 25, 2025-
Map releaseJun 25, 2025-
UpdateJun 25, 2025-
Current statusJun 25, 2025Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

emd_60596.png

Downloads & links

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Map

FileDownload / File: emd_60596.map.gz / Format: CCP4 / Size: 476.8 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.08 Å/pix.
x 500 pix.
= 538.65 Å		1.08 Å/pix.
x 500 pix.
= 538.65 Å		1.08 Å/pix.
x 500 pix.
= 538.65 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.0773 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.26
Minimum - Maximum-0.3388918 - 1.4403514
Average (Standard dev.)-0.0004163772 (±0.029300814)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions500500500
Spacing500500500
CellA=B=C: 538.64996 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_60596_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_60596_half_map_2.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : complex

EntireName: complex
Components
  • Complex: complex
    • Protein or peptide: Butyrophilin subfamily 2 member A1
    • Protein or peptide: Butyrophilin subfamily 3 member A2
    • Protein or peptide: Butyrophilin subfamily 3 member A1
  • Ligand: (2E)-4-hydroxy-3-methylbut-2-en-1-yl trihydrogen diphosphate

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Supramolecule #1: complex

SupramoleculeName: complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Butyrophilin subfamily 2 member A1

MacromoleculeName: Butyrophilin subfamily 2 member A1 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 56.826953 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: QFIVVGPTDP ILATVGENTT LRCHLSPEKN AEDMEVRWFR SQFSPAVFVY KGGRERTEEQ MEEYRGRTTF VSKDISRGSV ALVIHNITA QENGTYRCYF QEGRSYDEAI LHLVVAGLGS KPLISMRGHE DGGIRLECIS RGWYPKPLTV WRDPYGGVAP A LKEVSMPD ...String:
QFIVVGPTDP ILATVGENTT LRCHLSPEKN AEDMEVRWFR SQFSPAVFVY KGGRERTEEQ MEEYRGRTTF VSKDISRGSV ALVIHNITA QENGTYRCYF QEGRSYDEAI LHLVVAGLGS KPLISMRGHE DGGIRLECIS RGWYPKPLTV WRDPYGGVAP A LKEVSMPD ADGLFMVTTA VIIRDKSVRN MSCSINNTLL GQKKESVIFI PESFMPSVSP CAVALPIIVV ILMIPIAVCI YW INKLQKE KKILSGEKEF ERETREIALK ELEKERVQKE EELQVKEKLQ EELRWRRTFL HAVDVVLDPD TAHPDLFLSE DRR SVRRCP FRHLGESVPD NPERFDSQPC VLGRESFASG KHYWEVEVEN VIEWTVGVCR DSVERKGEVL LIPQNGFWTL EMHK GQYRA VSSPDRILPL KESLCRVGVF LDYEAGDVSF YNMRDRSHIY TCPRSAFSVP VRPFFRLGCE DSPIFICPAL TGANG VTVP EEGLTLHRVG THQSL

UniProtKB: Butyrophilin subfamily 2 member A1

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Macromolecule #2: Butyrophilin subfamily 3 member A2

MacromoleculeName: Butyrophilin subfamily 3 member A2 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 33.317668 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: QFSVLGPSGP ILAMVGEDAD LPCHLFPTMS AETMELKWVS SSLRQVVNVY ADGKEVEDRQ SAPYRGRTSI LRDGITAGKA ALRIHNVTA SDSGKYLCYF QDGDFYEKAL VELKVAALGS NLHVEVKGYE DGGIHLECRS TGWYPQPQIQ WSNAKGENIP A VEAPVVAD ...String:
QFSVLGPSGP ILAMVGEDAD LPCHLFPTMS AETMELKWVS SSLRQVVNVY ADGKEVEDRQ SAPYRGRTSI LRDGITAGKA ALRIHNVTA SDSGKYLCYF QDGDFYEKAL VELKVAALGS NLHVEVKGYE DGGIHLECRS TGWYPQPQIQ WSNAKGENIP A VEAPVVAD GVGLYEVAAS VIMRGGSGEG VSCIIRNSLL GLEKTASISI ADPFFRSAQP WIAALAGTLP ILLLLLAGAS YF LWRQQKE ITALSSEIES EQEMKEMGYA ATEREISLRE SLQEELKRKK IQYLTRGEES SSDTNKSA

UniProtKB: Butyrophilin subfamily 3 member A2

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Macromolecule #3: Butyrophilin subfamily 3 member A1

MacromoleculeName: Butyrophilin subfamily 3 member A1 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 54.432809 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: QFSVLGPSGP ILAMVGEDAD LPCHLFPTMS AETMELKWVS SSLRQVVNVY ADGKEVEDRQ SAPYRGRTSI LRDGITAGKA ALRIHNVTA SDSGKYLCYF QDGDFYEKAL VELKVAALGS DLHVDVKGYK DGGIHLECRS TGWYPQPQIQ WSNNKGENIP T VEAPVVAD ...String:
QFSVLGPSGP ILAMVGEDAD LPCHLFPTMS AETMELKWVS SSLRQVVNVY ADGKEVEDRQ SAPYRGRTSI LRDGITAGKA ALRIHNVTA SDSGKYLCYF QDGDFYEKAL VELKVAALGS DLHVDVKGYK DGGIHLECRS TGWYPQPQIQ WSNNKGENIP T VEAPVVAD GVGLYAVAAS VIMRGSSGEG VSCTIRSSLL GLEKTASISI ADPFFRSAQR WIAALAGTLP VLLLLLGGAG YF LWQQQEE KKTQFRKKKR EQELREMAWS TMKQEQSTRV KLLEELRWRS IQYASRGERH SAYNEWKKAL FKPADVILDP KTA NPILLV SEDQRSVQRA KEPQDLPDNP ERFNWHYCVL GCESFISGRH YWEVEVGDRK EWHIGVCSKN VQRKGWVKMT PENG FWTMG LTDGNKYRTL TEPRTNLKLP KTPKKVGVFL DYETGDISFY NAVDGSHIHT FLDVSFSEAL YPVFRILTLE PTALT ICPA

UniProtKB: Butyrophilin subfamily 3 member A1

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Macromolecule #4: (2E)-4-hydroxy-3-methylbut-2-en-1-yl trihydrogen diphosphate

MacromoleculeName: (2E)-4-hydroxy-3-methylbut-2-en-1-yl trihydrogen diphosphate
type: ligand / ID: 4 / Number of copies: 1 / Formula: H6P
Molecular weightTheoretical: 262.092 Da
Chemical component information

ChemComp-H6P:
(2E)-4-hydroxy-3-methylbut-2-en-1-yl trihydrogen diphosphate

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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: 8
VitrificationCryogen name: NITROGEN

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 1.4000000000000001 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: OTHER
Final reconstructionResolution.type: BY AUTHOR / Resolution: 4.12 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 175884
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD

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