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- PDB-8zab: Cryo-EM structure of ectodomains of HBMBPP-BTN2A1-BTN3A1 complex -

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Basic information

Entry
Database: PDB / ID: 8zab
TitleCryo-EM structure of ectodomains of HBMBPP-BTN2A1-BTN3A1 complex
Components
  • Butyrophilin subfamily 2 member A1
  • Butyrophilin subfamily 3 member A1
KeywordsIMMUNE SYSTEM / complex / immune
Function / homology
Function and homology information


Butyrophilin (BTN) family interactions / 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 / 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 2 member A1
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.67 Å
AuthorsZheng, J. / Gao, W. / Zhu, Y. / Huang, Z.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC) China
CitationJournal: To Be Published
Title: Cryo-EM structure of ectodomains of HBMBPP-BTN2A1-BTN3A1 complex
Authors: Zheng, J. / Gao, W. / Zhu, Y. / Huang, Z.
History
DepositionApr 24, 2024Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Apr 30, 2025Provider: repository / Type: Initial release
Revision 1.0Apr 30, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Apr 30, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Apr 30, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Apr 30, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Apr 30, 2025Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
C: Butyrophilin subfamily 3 member A1
D: Butyrophilin subfamily 3 member A1
E: Butyrophilin subfamily 2 member A1
G: Butyrophilin subfamily 2 member A1


Theoretical massNumber of molelcules
Total (without water)93,8714
Polymers93,8714
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Butyrophilin subfamily 3 member A1


Mass: 22897.855 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: BTN3A1, BTF5 / Production host: Homo sapiens (human) / References: UniProt: O00481
#2: Protein Butyrophilin subfamily 2 member A1


Mass: 24037.453 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: BTN2A1, BT2.1, BTF1 / Production host: Homo sapiens (human) / References: UniProt: Q7KYR7
Has protein modificationY

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Experimental details

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Experiment

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

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Sample preparation

ComponentName: BTN2A1-BTN3A1 / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 8
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: NITROGEN

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 50 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 1500 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM softwareName: PHENIX / Version: 1.20_4459: / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.67 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 535747 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0046692
ELECTRON MICROSCOPYf_angle_d0.7389067
ELECTRON MICROSCOPYf_dihedral_angle_d7.373944
ELECTRON MICROSCOPYf_chiral_restr0.0461018
ELECTRON MICROSCOPYf_plane_restr0.0081171

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