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- PDB-9siq: Structure of the honeybee GABAA RDL receptor with Chrodrimanin B -

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Basic information

Entry
Database: PDB / ID: 9siq
TitleStructure of the honeybee GABAA RDL receptor with Chrodrimanin B
ComponentsGamma-aminobutyric acid receptor subunit beta
KeywordsMEMBRANE PROTEIN / GABAA receptor / insect / neurotransmission / insecticides
Function / homology
Function and homology information


ligand-gated monoatomic anion channel activity / GABA-A receptor activity / chloride channel activity / chloride channel complex / extracellular ligand-gated monoatomic ion channel activity / postsynaptic membrane
Similarity search - Function
Gamma-aminobutyric-acid A receptor, beta subunit / Gamma-aminobutyric acid A receptor/Glycine receptor alpha / Neurotransmitter-gated ion-channel, conserved site / Neurotransmitter-gated ion-channels signature. / Neurotransmitter-gated ion-channel transmembrane domain / Neurotransmitter-gated ion-channel transmembrane region / Neurotransmitter-gated ion-channel transmembrane domain superfamily / Neuronal acetylcholine receptor / Neurotransmitter-gated ion-channel / Neurotransmitter-gated ion-channel ligand-binding domain ...Gamma-aminobutyric-acid A receptor, beta subunit / Gamma-aminobutyric acid A receptor/Glycine receptor alpha / Neurotransmitter-gated ion-channel, conserved site / Neurotransmitter-gated ion-channels signature. / Neurotransmitter-gated ion-channel transmembrane domain / Neurotransmitter-gated ion-channel transmembrane region / Neurotransmitter-gated ion-channel transmembrane domain superfamily / Neuronal acetylcholine receptor / Neurotransmitter-gated ion-channel / Neurotransmitter-gated ion-channel ligand-binding domain / Neurotransmitter-gated ion-channel ligand-binding domain superfamily / Neurotransmitter-gated ion-channel ligand binding domain
Similarity search - Domain/homology
: / Chem-PT5 / Gamma-aminobutyric acid receptor subunit beta
Similarity search - Component
Biological speciesApis mellifera (honey bee)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.96 Å
AuthorsLaboure, T. / Nury, H.
Funding support France, 1items
OrganizationGrant numberCountry
Centre National de la Recherche Scientifique (CNRS)PestiPenta France
CitationJournal: To Be Published
Title: Structure of the honeybee GABAA RDL receptor with Chrodrimanin B
Authors: Laboure, T. / Pandey, P.M. / Zarkadas, L. / Julian-Binard, C. / Baud, D. / Neyton, J. / Cens, T. / Rousset, M. / Dehez, F. / Charnet, P. / Nury, H.
History
DepositionAug 29, 2025Deposition site: PDBE / Processing site: PDBE
Revision 1.0Feb 11, 2026Provider: repository / Type: Initial release
Revision 1.0Feb 11, 2026Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Feb 11, 2026Data content type: Additional map / Part number: 1 / Data content type: Additional map / Provider: repository / Type: Initial release
Revision 1.0Feb 11, 2026Data content type: Additional map / Part number: 2 / Data content type: Additional map / Provider: repository / Type: Initial release
Revision 1.0Feb 11, 2026Data content type: FSC / Data content type: FSC / Provider: repository / Type: Initial release
Revision 1.0Feb 11, 2026Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Feb 11, 2026Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Feb 11, 2026Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Feb 11, 2026Data content type: Mask / Part number: 1 / Data content type: Mask / Provider: repository / Type: Initial release
Revision 1.0Feb 11, 2026Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Gamma-aminobutyric acid receptor subunit beta
B: Gamma-aminobutyric acid receptor subunit beta
D: Gamma-aminobutyric acid receptor subunit beta
E: Gamma-aminobutyric acid receptor subunit beta
C: Gamma-aminobutyric acid receptor subunit beta
hetero molecules


Theoretical massNumber of molelcules
Total (without water)277,45725
Polymers267,5875
Non-polymers9,87020
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

#1: Protein
Gamma-aminobutyric acid receptor subunit beta


Mass: 53517.445 Da / Num. of mol.: 5
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Apis mellifera (honey bee) / Gene: RDL, 406124, LOC406124 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: A0A8U0Y4W2
#2: Sugar
ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 10 / Source method: obtained synthetically / Formula: C8H15NO6
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0
#3: Chemical
ChemComp-PT5 / [(2R)-1-octadecanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(oxidanyl)-4,5-diphosphonooxy-cyclohexyl]oxy-phospho ryl]oxy-propan-2-yl] (8Z)-icosa-5,8,11,14-tetraenoate / Phosphatidylinositol 4,5-bisphosphate / PtdIns(4,5)P2


Mass: 1047.088 Da / Num. of mol.: 5 / Source method: obtained synthetically / Formula: C47H85O19P3 / Feature type: SUBJECT OF INVESTIGATION / Comment: phospholipid*YM
#4: Chemical
ChemComp-A1JN7 / Chrodrimanin B


Mass: 484.538 Da / Num. of mol.: 5 / Source method: obtained synthetically / Formula: C27H32O8 / Feature type: SUBJECT OF INVESTIGATION
Has ligand of interestY
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: Gamma-aminobutyric acid receptor subunit beta, RDL in complex with Chrodrimanin B
Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Apis mellifera (honey bee)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2100 nm / Nominal defocus min: 700 nm
Image recordingElectron dose: 41.23 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM software
IDNameCategory
1crYOLOparticle selection
4cryoSPARCCTF correction
9cryoSPARCinitial Euler assignment
10cryoSPARCfinal Euler assignment
11cryoSPARCclassification
12cryoSPARC3D reconstruction
13PHENIXmodel refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.96 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 33309 / Symmetry type: POINT

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