EMBO/SourceData huggingface dataset:
Figure 4A Y2H assays showing that SEU interacts with SDG4 and SDG25. The yeast transformants were plated on SD/-2 and SD/-4 media to assess protein-protein interactions.C SDG4 physically bind to the WOX5 promoter, as shown by ChIP-qPCR analysis. ACT7, control. Data information Chromatin was isolated from 5 mm root tip sections of seedlings at 5 DAG, sonicated, and immunoprecipitated using anti-GFP or anti-H3K4me3 antibodies. The precipitated DNA was used as a template for qPCR analysis. In (C) data represent mean ± SD of three independent replicates. **P < 0.01, *P < 0.05 (Student's t-test).D, E ChIP-qPCR analysis indicating that mutations in SDG4 and SEU genes impair H3K4me3 deposition in the WOX5 promoter. ChIP signal was normalized to the WT. Individual values (black dots) are shown. Data information: Chromatin was isolated from 5 mm root tip sections of seedlings at 5 DAG, sonicated, and immunoprecipitated using anti-GFP or anti-H3K4me3 antibodies. The precipitated DNA was used as a template for qPCR analysis. In (D), (E) data represent mean ± SD of three independent replicates. **P < 0.01, *P < 0.05 (Student's t-test).F, G Expression pattern of pWOX5::GFP in the indicated genotypes at 5 DAG. Scale bars: 20 µm. H Quantification of GFP fluorescence in the indicated genotypes expressing pWOX5::GFP. GFP signal intensity in the WT was set to 1. n denotes the total number of scored samples. Data information: In (H) data represent mean ± SD of three independent replicates. **P < 0.01, *P < 0.05 (Student's t-test).I RT-qPCR analysis of the relative expression levels of WOX5 in WT and ashr3-1 roots. Total RNA was extracted from 5 mm root tip sections of seedlings at 5 DAG. Individual values (black dots) are shown. Data information: In (I) data represent mean ± SD of three independent replicates. **P < 0.01, *P < 0.05 (Student's t-test).J-M mPS-PI staining of stem cell niche in the indicated genotypes at 5 DAG. Blue arrows indicate the QC, and red arrows indiate the CSCs. The numbers denote total number of scored samples, with same phenotypes showing in (J-M). Scale bars: 10 μm. N Quantification of the CSC layer in the indicated genotypes at 5 DAG. Data information In (N), data represent mean ± SD of three independent replicates. **P < 0.01, *P < 0.05 (Student's t-test).
Figure 5A-G Representative confocal images of the indicated genotypes at 5 DAG. The white dashed lines indicate the QC region. Scale bars: 20 μm.H Domain mapping of SEU involved in interactions with SCR and SDG4. The yeast transformants were plated on SD/-2 and SD/-4 media to assess protein-protein interactions.I SEU associates with SCR and SDG4 in N. benthamiana leaves, as shown by Co-IP assays. SDG4-myc, SCR-HA, and SEU-GFP were coinfiltrated into N. benthamiana leaves. Protein samples were immunoprecipitated with anti-GFP antibody and immunoblotted with anti-myc and anti-HA antibody. N. benthamiana leaves coinfiltrated with SDG4-myc and SCR-HA were used as a negative control.J Co-IP assays of SCR with SEU and SDG4 in Arabidopsis. Proteins extracted from SDG4-myc and SDG4-myc SCR-GFP plants were immunoprecipitated using anti-GFP antibody, and immunoblotted using anti-myc and anti-SEU antibodies.
Figure 1D. ﻿RNA expression heatmap showing the top differentially expressed gene markers for each cluster of the reference single cell atlas dataset. Cells (column) are clustered by the expression of the main marker genes (row).E. Average expression level of the genes Fas3 (left panel) and zfh1 (right panel) used as markers to assign epithelial and myoblast cells, respectively, in the reference dataset.F. Confocal single plane image of third instar larval wing disc and orthogonal views of the disc stained with anti-Zfh1 (red) and anti-Fas3 (green).G. Dot plot showing the expression levels of the marker genes identified for the myoblast, epithelial and tracheal cells across the 26 clusters of the reference cell atlas. Color intensity represents the average normalized expression level. Dot diameter represents the fraction of cells expressing each gene in each cluster. Gene expression for each cell was normalized by the total expression, and then the expression of each gene was scaled.H. Confocal single plane image of third instar larval wing disc and orthogonal view of SPARC>GFP (green) stained with anti-Ct (red) and 4´,6-diamidino-2-phenylindole (DAPI, blue). Full genotype y-, w-/w-; UAS-GFP/+; SPARC-GAL4/+.
Figure 2D. Average expression level of the genes used as known markers to assign each epithelial cluster in the reference atlas dataset. ﻿Cells colored by the expression of nub, wg, zfh2, Sox15, grn, bnl, eyg, Ance, Idg4 and drm.E. Dot plot showing the expression levels of the top marker genes identified for the epithelial cells across 17 clusters of the reference cell atlas dataset.F. Confocal single plane image of third instar larval wing disc stained with anti-Nub, anti-Wg, anti-Svp, anti-Hairy (red), reporting expression of dpp-lacZ, Dad-lacZ (anti-β-gal, red) and counterstained with DAPI (cyan). Scale bars: 100 μm. Full genotypes: P{CaryP}attP2 (top and bottom panels), P{PZ}dpp[10638];+, and y- w-;+; P{lacW}Dad[j1E4].
Figure 3B. Dot plots showing the expression levels of the top variable genes between IFM and DFM myoblasts across 7 clusters of the reference cell atlas dataset.Confocal single plane images of third instar larval wing discs stained with: (C) anti-Ct (red) and anti-Zfh1 (green), (D) kirre[rp298]-lacZ (anti-β-gal, green) and anti-Zfh1 (red), (E) Ten-a[MI04411]::GFP (green), anti-Ct (red) and anti-Zfh1 (cyan), (F) anti-Nrt (red) and anti-Zfh1 (cyan), (G) Argk[CB3789]::GFP (green), anti-Ct (red) and anti-Zfh1 (cyan), (H) nkd[MI00209]::GFP (green), anti-Ct (red) and anti-Zfh1 (cyan), (I) Ama[NP1297]>GFP (green), anti-Ct (red) and anti-Zfh1 (cyan) and (J) Mef2>CD8-GFP (green), and fluorescent in situ hybridization of Ama-RNA probe (white).Confocal single plane images of third instar larval wing discs stained with: K. Ama[NP1297]>gTRACE showing the lineage of Ama-GAL4 (green) and the active GAL4 (red), and fluorescent in situ hybridization of Ama-RNA probe (white). L. Confocal single plane images of adult DFM of Ama[NP1297]>gTRACE showing the lineage of Ama-GAL4 (green) and the active GAL4 (red) stained with DAPI (white) dorsal right, anterior up. DFM are numbered in white following (Lawrence, 1982).
Figure 4A. Dot plot showing the expression levels of the top variable genes between myoblasts across 7 clusters of the reference cell atlas dataset.Confocal single plane images of third instar larval wing discs stained with anti-Ct (red) and (B) E(spl)m6-BFM-gapGFP (green), (C) E(spl)m7-HLH[VK00037]-GFP (green)Confocal single plane images of third instar larval wing discs stained with (D) E(spl)m3-HLH[GMR10E12]>GFP (green).H-I. Confocal single plane images of third instar larval wing discs stained with anti-Ct (cyan) showing the lineage of GAL4 (green) and the active GAL4 (red) in (H) E(spl)m3-HLH[GMR10E12]>gTRACE and (I) E(spl)m6-BFM-GAL4>gTRACE.
Figure 6The muscle-specific (A-B) Mef2-GAL4 drivers were crossed to UAS-RNAi lines to knockdown the expression of the gene markers for the myoblast clusters. (A, Viability test quantified by scoring the percentage of viable animals at each developmental stage, including early pupa (black), pharate (grey) and adult (white), relative to the total number of animals. Data are expressed as stacked bars showing the median with interquartile range (n≥ 3 independent biological replicates), unless noted as viable (NQ) and lethal (NQ), which stands for animals that were viable and lethal, respectively, but no quantitative analysis were performed. (B, Flight ability scored by quantifying the percentage of flies landing on each section of the column (top, middle and bottom) as indicated on the diagram on the right. Data are expressed as stacked bars. The total number of flies used in each assay was pooled together and displayed next to each bar (N≥6). n/a stands for non-applicable since animals are not viable.The muscle-specific 151-GAL4 drivers were crossed to UAS-RNAi lines to knockdown the expression of the gene markers for the myoblast clusters. C). Viability test quantified by scoring the percentage of viable animals at each developmental stage, including early pupa (black), pharate (grey) and adult (white), relative to the total number of animals. Data are expressed as stacked bars showing the median with interquartile range (n≥ 3 independent biological replicates), unless noted as viable (NQ) and lethal (NQ), which stands for animals that were viable and lethal, respectively, but no quantitative analysis were performed. D). Flight ability scored by quantifying the percentage of flies landing on each section of the column (top, middle and bottom) as indicated on the diagram on the right. Data are expressed as stacked bars. The total number of flies used in each assay was pooled together and displayed next to each bar (N≥6). n/a stands for non-applicable since animals are not viable.E. Confocal single plane images of third instar larval wing discs from Mef2>mCherry-RNAi, (left panel) and Mef2>chinmo[HM04048]-RNAi (right panel) stained with anti-Zfh1 (red) and DAPI (cyan). Scale bars: 50 μm. F. Quantification of phenotype displayed in (E). Stacked bars showing the percentage of wing discs scored as either normal or as abnormal. Data are expressed as mean ± sem, N = 32 discs per genotype, n = 3 independent experiments. G. Quantification of viability test. Since the UAS-Ama-RNAi[GD12733] transgene is inserted on Chromosome X the genotype of females is Mef2>Ama-RNAi whereas males are Mef2>+. Box plot showing the ratio of flies with genotype of interest (females) over control flies (males). The whiskers show 5-95 percentile, and the middle line the median. * p=0.014 (Mann-Whitney test, N≥6 independent biological replicates). Full genotypes are w, UAS-Dicer2;+; mCherry-RNAi/Mef2-GAL4 and w, UAS-Dicer2, UAS-Ama-RNAi[GD12733];+; Mef2-GAL4.
Figure 7A. Lethality of 1151>Ama-RNAi[HMS00297] animals at pharate stage was partially rescued by overexpressing the transgene Ama-cDNA. ﻿Representative images of adults and pharate pupa are shown. Full genotypes: 1151-GAL4;UAS-myrRFP;+ , 1151-GAL4;UAS-myrRFP;UAS-Ama[HMS00297]-RNAi , 1151-GAL4;UAS-AmaOE/CyO;UAS-Ama[HMS00297]-RNAi and 1151-GAL4;UAS-AmaOE;+.C. Average expression level of the genes Fas3 (left panel) and zfh1 (right panel) in the 1151>Ama-RNAi dataset.D. Confocal single plane images of 1151>mCherry-RNAi and 1151>Ama-RNAi wing discs stained with anti-Ct (red) and anti-Zfh1 (green).E. Dot plots showing the expression levels of the top markers for myoblast clusters identified in the reference cell atlas across the cluster of myoblasts in 1151>Ama-RNAi and 7 myoblast clusters in control dataset.F. The myoblast cells in 1151>Ama-RNAi dataset projected into the reference single cell atlas by transferring cell type labels using Seurat. The bar graph represents the total number of cells in each cluster normalized to the total number of epithelial cells per genotype.G-H. Confocal single plane images of 1151>mCherry-RNAi and 1151>Ama-RNAi wing discs stained with anti-Zfh1 (green) and (G) anti-Nrt (white) at wandering third instar larval stage (110 - 135 h AEL) or (H) DAPI (red) at early third instar larval wing discs (72 - 110 h AEL).
Figure 8Confocal single plane images of 1151>Ama-RNAi animals and 1151>mCherry-RNAi. A. Forming DFM at 40 h APF stained with anti-Zfh1 (green), anti-Futsch (22c10, red) and anti-Kettin (white). White arrows point to the wing hinge, wings pointing left, anterior up. B. Forming IFM (DLM) at 16 h APF, stained with anti-Futsch (22c10, red), anti-Zfh1 (green) and DAPI (cyan). Yellow-dashed box indicates magnified area (bottom panel). Anterior up.C. DFM at 96 h APF stained with Phalloidin (red), anti-Kettin (green) and DAPI (blue). Anterior up, dorsal right. DFM are numbered in white as in (Lawrence, 1982). D. IFM at 96 h APF, transverse section (top) stained with anti-PS-integrin (green), Phalloidin (red) and DAPI (blue), dorsal up; sagittal section (bottom) stained with anti-Kettin (green), Phalloidin (red) and DAPI (blue), anterior up, dorsal right.
Figure 1C. Confirmation of sensor localization to different cellular compartments. Green, HyPer7; blue, DAPI stainD.-H. Response of HyPer7 probes targeted to indicated compartments to incubation with antimycin A (a complex III inhibitor, red curve and data points) or ethanol as control (black line and data points). HEK293 cells were grown either with glucose or galactose as carbon source as indicated. Solid line represents mean, points colored in the lighter version of the respective color are the corresponding ratios measured in individual cells. Data information: As most of the data were not normal distributed, instead of a t-test, a Wilcoxon/Mann-Whitney-U-test was performed and samples were compared in pairs. **, p ≤ 0.01, ***, p ≤ 0.001
Figure 3C. Response of HyPer7 probes targeted to indicated compartments to treatment of mtDAO-expressing HEK293 cells with 2 mM D-Ala (cells generated with the Flp-In T-REX-system). HEK293 cells were grown either with glucose (black curve and data points) or galactose (red curve and data points) as carbon source. Solid line represents average, points colored in the lighter version of the respective color are the corresponding ratios measured in individual cells. Data information: As most of the data were not normal distributed, instead of a t-test, a Wilcoxon/Mann-Whitney-U-test was performed and samples were compared in pairs. ***, p ≤ 0.001
Figure 4A. Response of HyPer7 probes targeted to indicated compartments to treatment with increasing amounts of exogenous H2O2 (2, 4 and 8 µM H2O2; 20 mM DTT). HEK293 cells were grown either with glucose (black curve and data points) or galactose (red curve and data points) as carbon source. As most of the data were not normal distributed, instead of a t-test, a Wilcoxon/Mann-Whitney-U-test was performed and samples were compared in pairs. ***, p ≤ 0.001
Figure 5A. Protein levels in cells grown on glucose and galactose. Cell lysates were analyzed by quantitative mass spectrometry (n = 4 biological replicates Levels of antioxidative enzymes (especially peroxiredoxins, PRDX in blue) are not changed except for cytosolic thioredoxin reductase (TXNRD1).B. Protein levels in cells grown on glucose and galactose. Cell lysates were analyzed by immunoblot (n = 2 biological replicates). Cytosolic thioredoxin reductase (TXNRD1) is increased by more than two-fold in cells grown on galactose compared to glucose-grown cells.The dotted line depicts 1, meaning no change in protein levels.
Figure 6B. Response of HyPer7 probes targeted to indicated compartments to incubation with antimycin A (AntA, red curve and data points) or ethanol as control (black curve and data points). HeLa cells were grown with galactose as carbon source. Solid line represents average, points colored in the lighter version of the respective color are the corresponding ratios measured in individual cells. Data information: As most of the data were not normal distributed, instead of a t-test, a Wilcoxon/Mann-Whitney-U-test was performed and samples were compared in pairs. ***, p ≤ 0.001
Figure 7B. Peroxiredoxin levels in peroxiredoxin 1 (PRDX1 KO) and peroxiredoxin 2 (PRDX2 KO) knockout cells. quantitative proteomics (n = 4, technical replicates) The right subpanel of B lists the identified proteins belonging to cellular antioxidative systems which are not altered for PRDX1 KO or PRDX2 KO, respectively. In both quantitative proteomics experiments 4403 proteins were detected in total.D. Response of HyPer7 probes targeted to indicated compartments to treatment of mtDAO-expressing cell lines with 4 mM D-Ala (black, wild type; red, PRDX1 KO; blue, PRDX2 KO; cell generated with the piggyBAC system). Cells were grown in glucose-containing medium. Solid line represents average, points colored in the lighter version of the respective color are the corresponding ratios measured in individual cells. Data information As most of the data were not normal distributed, instead of a t-test, a Wilcoxon/Mann-Whitney-U-test was performed and samples were compared in pairs. *, p ≤ 0.05, **, p ≤ 0.01, ***, p ≤ 0.001
Figure 8B. Peroxiredoxin levels in peroxiredoxin 1 and 2 double knockout cells (PRDX1/2 DKO). quantitative proteomics (B).The right subpanel in (B) lists all detected but not altered proteins belonging to cellular antioxidative systems.E. Response of HyPer7 probes targeted to indicated compartments to treatment of mtDAO-expressing cell lines with 4 mM D-Ala (black, wild type; red, PRDX1/2 DKO; cell generated with the piggyBAC system). Cells were grown in glucose-containing medium. Solid line represents average, points colored in the lighter version of the respective color are the corresponding ratios measured in individual cells. Data information: Statistical analysis was only performed to compare the PRDX1/2 DKO with the wildtype. As most of the data were not normal distributed, instead of a t-test, a Wilcoxon/Mann-Whitney-U-test was performed and samples were compared in pairs. *, p ≤ 0.05, **, p ≤ 0.01, ***, p ≤ 0.001
f1(a) The ternary NDP52-GAL8-LC3C complex (green line), binary NDP52-GAL8 complex (blue line) and NDP52 complex alone (red line) by SEC-MALS. The dotted line represents measured MW and the vertical bars (1 and 2) indicate the gap in MW. The SEC-MALS result of NDP52 alone (red line) shows that the oligomeric state is ambiguous between dimer and trimer. However, the NDP52-GAL8 complex shows a MW difference of 70 kDa compared with NDP52 alone, which confirmed that two molecules of monomeric GAL8 (MW: ~33.5 kDa; Supplementary Fig. S1b) bound to homodimeric NDP52. Furthermore, the ternary NDP52-GAL8-LC3C complex showed a MW difference of ~30 kDa compared with the binary NDP52-GAL8 complex, which also confirmed that two additional molecules of monomeric LC3C bound to the binary complex.(b) Size-exclusion chromatography data of NDP52-GAL8-LC3C complex. The first peak (marked by an orange bar) represents the ternary complex, as shown by the SDS-polyacrylamide gel electrophoresis (SDS-PAGE) results marked by an orange bar (lane 1, 2 and 3). The second merged peak (marked by green and yellow bar) and corresponding SDS-PAGE results show the remaining free GAL8 (lane 4, 5, 6 and 7) and LC3C (lane 5, 6, 7 and 8).
f2(a) Overall structure of GAL8 with bound Galbi peptide (cyan) and NAD (purple) in the asymmetric unit. The other pair of crystallographic dimer is coloured grey. The first β-strand forming unique interaction is labelled as β1. (b) A topology diagram of GAL8. The β-strands in each N-CRD and C-CRD are numbered sequentially with prime (′) in the C-CRD. The β-strands with a solid line indicate a carbohydrate-binding side in each CRD and those of with a dashed line indicate an opposite side. The elongated purple and cyan ovals indicate NAD- and NDP52-binding sites, respectively. (c) Overall view of Galbi peptide (cyan) bound to the C-CRD of GAL8 (β-strands in yellow and residues in gray).
f3(a) Magnified view showing the detailed interaction around Leu374(p). (b) Magnified view showing the detailed interaction around Tyr380(p). (c) Magnified view showing the importance of main-chain hydrogen bonds of the Galbi peptide. (a-c) Red dashed lines designate hydrogen bonds.(d) An FP assay using FITC-labelled Galbi peptides, including mutants (L374A, Y380F and Y380A) against an increasing concentration of GAL8. (e) An FP assay using a FITC-labelled Galbi peptide against an increasing concentration of GAL8 mutants (E268A, I270A, Y272A and Trp317). (d,e) The KD values were calculated from at least three independent experiments. ND, not determined.
f4(a) Sequence alignment of N-CRD and C-CRD of GAL8. The residues important for interaction with the Galbi peptide and NAD are marked by yellow and magenta circles, respectively. (b) Detailed view of the peptide-binding site of C-CRD superposed with N-CRD. The residues for the Galbi peptide (cyan) interaction are labelled and the side chains of the corresponding N-CRD residues (magenta) are shown. (c) A detailed view of the NAD-binding site of N-CRD superposed with C-CRD. The residues for NAD (purple) interaction are labelled and the side chains of corresponding C-CRD residues (yellow) are shown.
f5(a) Three GAL8 structures, including both CRDs, are available from PDB (4FQZ-lactose bound in only N-CRD; 3VKL-lactose bound in both N-CRD and N-C-CRD; 3VKM-sialylated lactose in N-CRD and N-CRD in C-CRD). The C-CRDs of these Gal8 structures were superposed with that of our Gal8. For clarity, only Cα-traces of each structure (our GAL8-yellow; 4FQZ-red; 3VKM-blue; and 3VKL-cyan) are shown. The large rotation of the N-CRD domain relative to GAL8 compared with the other NDP52 structures is observed in the GAL8-NDP52 complex. A representative angle between CRD of our Gal8 and that of the 4FQZ structure is indicated in degrees. (b) A 90° rotation of panel (a) along the horizontal axis showing a top view. Arg59, which is a unique residue of Gal8CRD that provides carbohydrate specificity, is used as a standard for measuring the distance of domain movement.
Figure 1(A) Immunofluorescent staining of ABCA12 (green) and Insulin (red) in mouse islets showing extensive co-localisation in β-cells as well as expression in other islet populations (arrowheads, scale bar=25μm). (B) Co-expression of Abca12 (green) and Insulin (red) in MIN6 cells (scale bar = 10μm). (C) LacZ staining (blue) to detect gene expression of the knocked-in LacZ cassette from the Abca12 locus in islets (islet outlined, scale bar = 25μm).(D,E) ABCA12 immunostaining and the development of hyperkeratotic skin disease in E18.5 Abca12tm1a/tm1a mouse embryos (brackets indicate thickened epidermis, dashed line indicates epidermal basement membrane, scale bar = 50μm).(F, G) Immunohistochemical detection of cre expression (green) in pancreatic islets from conditional mouse lines showing co-expression with Insulin (red)(scale bar = 50μm).(H) Detection of recombination of the Abca12 locus by PCR, indicating different alleles (tm1c, wild type and tm1d).(I-K) Detection of ABCA12 expression (green) and deletion in pancreas sections from mice of indicated genotypes (islets outlined, scale bar = 25μm).(L) Quantitation of ABCA12 expression by densitometry of Western blots from purified pancreatic islets (values relative to wild type, n=3-8 animals per genotype, mean±SEM, *p=<0.05, Students t-test), showing representative blot with Actin loading control (right).Average daily food intake of conditionally modified mice (n=4-10 animals/genotype, mean±SEM).(N) animal body weight (n=4-10 animals/genotype, mean±SEM).
Figure 2(A-F) Oral and intraperitoneal glucose tolerance testing in Abca12tm1d mice at 6 (A,B), 8 (C, D) and 12 weeks (E,F) (mean±SEM, n=4-9 mice per group, * p=<0.05, **p<0.01 Students t-test).(G) Insulin tolerance in 12 week old mice (mean±SEM, n=4-9 mice per group).(H) Whole blood Hb1Ac levels in 16 week old Abca12tm1d mice (mean±SEM, n=4-9 mice per group, **p<0.01 Students t-test).(I) Acute phase insulin secretion after intraperitoneal injection of glucose (mean±SEM, n=4-9 animals per group, white/grey/black = Abca12+/+, cre/+ and Abca12tm1d respectively, mice at 8 weeks of age, **p<0.01 Students t-test).(J) Silencing of ABCA12 in MIN6 cells as assessed by Western blot of ABCA12 immuno-precipitate (top panel) or confocal microscopy in cells transfected with Dy547-siRNAABCA12 (lower panel, scale bar = 10μm).(K) Glucose stimulated insulin secretion (GSIS) from MIN6 cells after silencing of ABCA12 (mean±SEM, n=4 replicates from assays in quadruplicate, ***p<0.0001, Students t-test).(L) Cellular insulin content in MIN6 cells after silencing of ABCA12 (mean±SEM, n=4 replicates from assays in quadruplicate).