(A) Adult males from indicated nAChR subunit null mutants, black arrows indicate curled abdomens but even in lines with a low frequency the phenotype is prominent (blue arrow). (B) Frequency of …
(A) Diagram of the construct used to generate DsRED insertions into each of the nAChR subunit genes. LHA and RHA = Left and Right homology arms. (B) A guide RNA target site is identified in the exon …
(A) Bar graph of the survival rate, measured as the percentage of pupae formed, following larval injection of 2.5 nmol/g Hv1a in the indicated homozygous lines. **p=0.0035 (one-way ANOVA F(11,24) = …
(A) Schematic representation of the SMALPs extraction and nAChRs pull-down for mass spectrometric analysis. (B) Negative staining of extracted SMALPs by transmission electron microscopy, n=3. Scale …
Transmission electron microscopy micrographs.
(A) Fluorescence signal of uncoupled α-Btx in solution before and after coupling to affinity beads (two-tailed t-test, ***p<0.001, n=4). (B) Biological replicate: same condition as in Figure 3C, …
Coupling efficiency of α-Btx to affinity beads.
(A) Number of identified proteins in affinity pull-down samples solubilised with or without SMA, two-tailed t-test, **p<0.01, n=6 or 8 replicates per condition. (B) MS/MS spectrum counts from …
SMALP extraction raw data.
(A) GO slim term for biological process and (B) for molecular function analysed within samples solubilised without or with SMA, n=4 or 11 per conditions. Predicted β-barrel membrane- (C), two-tailed …
Further SMALP extraction raw data.
(A) Identified Dα5, Dα6, and Dα7 subunit peptides in pull-downs using α-Btx affinity beads. Peptides from the ligand-binding and cytoplasmic domain are highlighted in red. (B) Numbers of identified …
Null pull-down raw data.
(A) Graphical representation of ten nAChR subunits. The position of protein domains and signal peptides are shown.
(A) Shared peptides found in the ligand-binding domains are shown in red. (B) Identified unique (/) and shared (,) peptides in cytoplasmic domain.
(A) Diagrammatic representation of nAChR subunit glycopeptide enrichment. Pull-downs with α-Btx affinity beads enrich for nAChRs and after tryptic digestion glycopeptides were enriched. …
Glycopeptide raw data.
(A) MS/MS spectra of fragmented shared Dα5 and Dα7 subunit peptides. Glycopeptides were deglycosylated with Endo H and the second asparagine (N) residue is modified with an N-acetylhexosamine, …
(A) Multiple sequence alignment of insect α7 nAChR subunits compared to sequences of nematodes. The glycosylated ligand-binding domain (LBD) sequence of Dα5 and Dα7 nAChR subunits are shown. …
(A–C) Dα6-YFP localisation from live confocal imaging in 2nd A, early B and late C 3rd instar larval brains. Visible localisation in brain (Br), ventral nerve cord (VNC), mushroom bodies (MB), and …
Scale bar = 100 µm.
Scale bar = 100 µm.
Scale bar = 100 µm.
Scale bar = 100 µm.
Reagent type (species) or resource | Designation | Source or reference | Identifiers | Additional information |
---|---|---|---|---|
Genetic reagent | pCDF3 | Port et al., 2014 | N/A | |
Genetic reagent | FSVS | Korona et al., 2020 | N/A | |
Genetic reagent | 3 × P3-DsRED | Gratz et al., 2014 | N/A | |
Genetic reagent (D. melanogaster) | {nos-Cas9}attP40 | Ren et al., 2013 | BDSC:78,781 | |
Genetic reagent (D. melanogaster) | {nos-Cas9}attP2 | Ren et al., 2013 | BDSC:78,782 | |
Genetic reagent (D. melanogaster) | w1118 | FlyBase | FBal0018186 | |
Genetic reagent (D. melanogaster) | nAChRα1 KO | This study | N/A | Steven Russell/ https://www.flyfacility.gen.cam.ac.uk |
Genetic reagent (D. melanogaster) | nAChRα2 KO | This study | N/A | Steven Russell/ https://www.flyfacility.gen.cam.ac.uk |
Genetic reagent (D. melanogaster) | nAChRα3 KO | This study | N/A | Steven Russell/ https://www.flyfacility.gen.cam.ac.uk |
Genetic reagent (D. melanogaster) | nAChRα4 KO | This study | N/A | Steven Russell/ https://www.flyfacility.gen.cam.ac.uk |
Genetic reagent (D. melanogaster) | nAChRα5 KO | This study | N/A | Steven Russell/ https://www.flyfacility.gen.cam.ac.uk |
Genetic reagent (D. melanogaster) | nAChRα6 KO | This study | N/A | Steven Russell/ https://www.flyfacility.gen.cam.ac.uk |
Genetic reagent (D. melanogaster) | nAChRα7 KO | This study | N/A | Steven Russell/ https://www.flyfacility.gen.cam.ac.uk |
Genetic reagent (D. melanogaster) | nAChRβ2 KO | This study | N/A | Steven Russell/ https://www.flyfacility.gen.cam.ac.uk |
Genetic reagent (D. melanogaster) | nAChRβ3 KO | This study | N/A | Steven Russell/ https://www.flyfacility.gen.cam.ac.uk |
Genetic reagent (D. melanogaster) | nAChRα1FSVS | This study | N/A | Steven Russell/ https://www.flyfacility.gen.cam.ac.uk |
Genetic reagent (D. melanogaster) | nAChRα6FSVS | This study | N/A | Steven Russell/ https://www.flyfacility.gen.cam.ac.uk |
Genetic reagent (D. melanogaster) | nAChRβ1FSVS | This study | N/A | Steven Russell/ https://www.flyfacility.gen.cam.ac.uk |
Genetic reagent (D. melanogaster) | nAChRβ2FSVS | This study | N/A | Steven Russell/ https://www.flyfacility.gen.cam.ac.uk |
Genetic reagent (E. coli) | E. coli competent cells | New England Biolabs | Catalogue number: C2987H | |
Commercial assay or kit | BbsI | New England Biolabs | Catalogue number: R0539 | |
Commercial assay or kit | Gibson Assembly Master Mix | New England Biolabs | Catalogue number: E2611L | |
Commercial assay or kit | Q5 High-Fidelity 2 X Master Mix | New England Biolabs | Catalogue number: M0492L | |
Commercial assay or kit | Pierce fluorometric peptide kit | Thermo Scientific | Catalogue number: 23,290 | |
Peptide, recombinant protein | Trypsin/Lys-C mix | Promega | Catalogue number: V5073 | |
Antibody | Anti-GFP (goat monoclonal) | Abcam | Catalogue number: Ab252881 | 1:1,000 |
Antibody | Anti-rat IgG (goat polyclonal) | Sigma-Aldrich | Catalogue number: A9037 | 1:10.000 |
Peptide, recombinant protein | ω‐hexatoxin‐Hv1a | Syngenta | CH-4332 Stein, Switzerland | |
Peptide, recombinant protein | α-Bungarotoxin | Abcam | Catalogue number: ab120542 | |
Peptide, recombinant protein | Carbachol | Insight Biotechnology Ltd | Catalogue number: CAS 51-83-2 | |
Other | CNBr-activated sepharose | Sigma-Aldrich | Catalogue number: C9 142–5 G | |
Other | Styrene maleic acid copolymer (3:1) | Dafforn, p.c. | ||
Commercial assay or kit | Mini-Protean TGX precast gels | Bio-Rad Laboratories | Catalogue number: 456–1,084 | |
Commercial assay or kit | ECL-Chemiluminescent detection solution | GE Healthcare | Catalogue number: 45-000-999 | |
Commercial assay or kit | CL-XPosure films | Thermo Scientific | Catalogue number: 10465145 | |
Software, algorithm | GraphPad Prism | GraphPad Software | RRID:SCR_002798 | |
Software, algorithm | Proteome Discoverer 2.3 | Thermo Scientific | RRID:SCR_014477 |
Abdomen phenotype.
Climbing ability.
Drosophila larval injection of ω-Hexatoxin-Hv1a & α-Bungarotoxin.
Identified nAChR peptides in pull-downs with α-Bungarotoxin.
Peptides from Dα3, Dα5, Dα6, Dα7 and Dβ3 nAChR subunits are listed and found [N] times within individual replicates. Protein domains are marked with: Ed extracellular-, Id Intracellular-, LBD ligand-binding-, and Non-domain localization. The mass-to-charge ratio (m/z) of the precursor ions, the protonated monoisotopic masses, the theoretical MH+ masses in Dalton [Da] and peptide modifications are listed. Peptide modifications are listed with: (C) Carbamidomethylation; (N,Q) Deamidation; (H) N-acetylhexosamine (HexNAc); (M) Oxidation.
Identified nAChR peptides in pull-downs without α-Bungarotoxin.
Identified peptides of nAChR subunits which are found in control pull-down samples without α-Bungarotoxin (α-Btx).
List of gRNAs and oligonucleotides used for cloning.
List of oligonucleotides used for amplification from genomic DNA.
C-terminal tagging of nAChRa6 with FSVS.
Wet pellet weight of membrane fractions.