EMBO/SourceData huggingface dataset:
Figure 2Pyruvate kinase (PK) activity in FLAG immunoprecipitates from human endothelial cells expressing FLAG-tagged wild-type (WT), Y657F (YF) or Y657D (YD) eNOS; n=6 independent cell batches (1-way ANOVA and Tukey).PK activity in eNOS immunoprecipitates from HEK293 cells expressing WT, YF, YD or S633D (SD) eNOS; n=5-9 independent experiments (1-way ANOVA and Bonferroni).S-nitrosation of PKM2 in human endothelial cells expressing FLAG-tagged WT or YF eNOS and treated with H2O2 (30 µmol/L) for 15 min; n=8 independent cell batches (Unpaired Student's t test). Dithiothreitol (DTT) was included to demonstrate specificity of the S-NO signal.PKM2 S-nitrosation in HEK293 cells expressing YF or YD eNOS and either FLAG-tagged WT PKM2 or a C358S (CS) PKM2 mutant. SNO-FLAG-PKM2 was detected with an anti-FLAG antibody after biotin switch technique; n=4 independent experiments (2-way ANOVA & Bonferroni). DTT treatment was included to demonstrate specificity of the SNO signal.PK activity in eNOS immunoprecipitates from HEK293 cells co-expressing YF or YD eNOS and either WT PKM2 or the CS PKM2 mutant; n=6 independent experiments (2-way ANOVA & Bonferroni).PKM2 enzyme kinetics measured with increasing concentrations of phosphoenolpyruvate (PEP) in eNOS immunoprecipitates from HEK293 cells expressing YF or YD eNOS. The data were fit with the Michaelis-Menten equation to determine Vmax and Km; n=4 independent experiments (2-way ANOVA & Bonferroni).Quantification of pentose phosphate pathway (PPP) intermediates; gluconate-6-P (G6P), ribulose-5-P (Rl5P), ribose-5-P (R5P), sedoheptulose-7-P (S7P), fructose-6-P (F6P) and erythrose-4-P (E4P) in human endothelial cells expressing YF or YD eNOS; n=6-8 independent cell batches (Unpaired Student's t test).NADPH/NADP+ and GSH/GSSG ratios in human endothelial cells expressing YF or YD eNOS; n=6-8 independent cell batches (Unpaired Student's t test).NADPH/NADP+ and GSH/GSSG ratios in human endothelial cells treated with solvent (Sol) or the PKM2 inhibitor shikonin (SKN, 1 µmol/L) for 45 minutes; n=4 independent cell batches (Unpaired Student's t test).
Figure 3Systolic blood pressure (SBP) in wild-type (WT) and YF-eNOS (YF) mice; n=9 animals per group (Unpaired Student's t test).Phenylephrine (PE)-induced contraction of endothelium-intact aortic rings from WT and YF mice. Experiments were performed in the absence and presence of L-NAME (LN, 300 µmol/L); n=6-10 animals per group (2-way ANOVA and Bonferroni).acetylcholine (Ach)-induced relaxation (C) of endothelium-intact aortic rings from WT and YF mice. Experiments were performed in the absence and presence of L-NAME (LN, 300 µmol/L); n=6-10 animals per group (2-way ANOVA and Bonferroni).Acetylcholine (ACh)-induced vasodilatation of the buffer-perfused hindlimb in situ. Experiments were performed in the absence and presence of L-NAME (LN, 300 µmol/L); n=12-13 animals per group (2-way ANOVA and Bonferroni).PKM2 S-nitrosation in pulmonary endothelial cells from WT and YF mice; n=5-6 independent cell batches (Unpaired Student's t test). Dithiothreitol (DTT) treatment was included to demonstrate specificity of the SNO signal. The blots show non adjacent bands cropped from the same membranes.PK activity in eNOS immunoprecipitates from WT and YF pulmonary endothelial cells; n=7-10 independent cell batches (Unpaired Student's t test). PK activity in eNOS immunoprecipitates from hearts from WT and YF mice; n=6 mice per group (Unpaired Student's t test).Representative images of eNOS-PKM2 interaction (PLA foci, red) in mouse pulmonary endothelial cells; the Golgi apparatus and endosomes were stained with Golph4 (green), the plasma membrane was stained with CD144 and nuclei were highlighted with DAPI (gray). Only rare PLA foci were found in samples incubated with control mouse and rabbit IgGs, demonstrating the specificity of the reaction; n=3 independent cell batches. Scale bars: 20 µm.
Figure 4Wild-type (WT) and YF-eNOS (YF) mice were treated with vehicle (Veh) or angiotensin II (AII, 1.44 mg/kg/day) for up to 28 days. Phosphorylation of eNOS on Tyr656 in lung lysates from animals treated for 7 days, n=6-7 mice per group (Unpaired Student's t test).Wild-type (WT) and YF-eNOS (YF) mice were treated with vehicle (Veh) or angiotensin II (AII, 1.44 mg/kg/day) for up to 28 days. Systolic blood pressure (SBP) in WT and YF mice treated for 28 days, n=10 mice per group (Unpaired Student's t test).Wild-type (WT) and YF-eNOS (YF) mice were treated with vehicle (Veh) or angiotensin II (AII, 1.44 mg/kg/day) for up to 28 days. Acetylcholine (ACh)-induced relaxation of aortic rings from the same animals as in panel B, n=8 mice per group (2-way ANOVA and Bonferroni).Wild-type (WT) and YF-eNOS (YF) mice were treated with vehicle (Veh) or angiotensin II (AII, 1.44 mg/kg/day) for up to 28 days. PKM2 S-nitrosation in lungs from WT and YF mice administered AII for 28 days, n=7-8 mice per group (Unpaired Student's t test). DTT treatment was included to demonstrate specificity of the SNO signal. The blots show non adjacent lanes from the same membranes.Wild-type (WT) and YF-eNOS (YF) mice were treated with vehicle (Veh) or angiotensin II (AII, 1.44 mg/kg/day) for up to 28 days. NADPH/NADP+ and GSH/GSSG ratios in lungs from WT and YF mice treated with AII for 28 days; n=8-9 mice per group (Unpaired Student's t test).Wild-type (WT) and YF-eNOS (YF) mice were treated with vehicle (Veh) or angiotensin II (AII, 1.44 mg/kg/day) for up to 28 days. 3-Nitrotyrosine (3-NT) levels in lungs from WT and YF mice treated with vehicle (Veh) or AII (AII) for 28 days; n=7-9 mice per group (2-way ANOVA and Bonferroni).Wild-type (WT) and YF-eNOS (YF) mice were treated with vehicle (Veh) or angiotensin II (AII, 1.44 mg/kg/day) for up to 28 days. NADPH/NADP+ and GSH/GSSG ratios in pulmonary endothelial cells from WT and YF mice treated with AII for 30 min; n=8 cell batches (2-way ANOVA and Tukey).Wild-type (WT) and YF-eNOS (YF) mice were treated with vehicle (Veh) or angiotensin II (AII, 1.44 mg/kg/day) for up to 28 days. H2O2 levels in pulmonary endothelial cells from WT and YF mice after treatment with AII (1 µmol/L) for 30 min; n=8 cell batches (2-way ANOVA and Tukey).
Figure 5ApoE-/- (-/-) and ApoEYF (YF) mice were subjected to partial ligation of the left carotid artery (LCA) and given a cholesterol-rich diet. The right, non-ligated artery (RCA) was used as a control. Proximity ligation assays showing S-nitrosated PKM2 (yellow) in the RCA and LCA 2 days after ligation. Phalloidin staining (blue) was included to highlight the vessel wall; n=4-5 mice per group (2-way ANOVA and Bonferroni). Scale bars: 50 µm.ApoE-/- (-/-) and ApoEYF (YF) mice were subjected to partial ligation of the left carotid artery (LCA) and given a cholesterol-rich diet. The right, non-ligated artery (RCA) was used as a control. GSH (green) levels in the RCA and LCA 2 days after ligation. CD31 (red) was included to label endothelial cells. n=4-5 mice per group (2-way ANOVA and Bonferroni). Scale bars: 50 µm.ApoE-/- (-/-) and ApoEYF (YF) mice were subjected to partial ligation of the left carotid artery (LCA) and given a cholesterol-rich diet. The right, non-ligated artery (RCA) was used as a control. 3-nitrotyrosine (3NT, green) levels in the RCA and LCA 2 days after ligation. CD31 (red) was included to label endothelial cells. n=5 mice per group (2-way ANOVA and Bonferroni). Scale bars: 50 µm.ApoE-/- (-/-) and ApoEYF (YF) mice were subjected to partial ligation of the left carotid artery (LCA) and given a cholesterol-rich diet. The right, non-ligated artery (RCA) was used as a control. Acetylcholine (ACh)-induced relaxation of the phenylephrine contracted LCA 7 days after ligation, n=7-8 mice per group (2-way ANOVA and Bonferroni). Acetylcholine (ACh)-induced relaxation of the phenylephrine contracted aorta 7 days after ligation, n=7-8 mice per group (2-way ANOVA and Bonferroni).
Figure 6ApoE-/- mice were treated with vehicle (Veh) or the PKM2 inhibitor shikonin (SKN, 1.2 mg/kg), subjected to partial ligation of the left carotid artery (LCA) and given a cholesterol-rich diet. The right, non-ligated artery (RCA) was used as a control. GSH (green) levels in the RCA and LCA 3 days after ligation. CD31 (red) was included to label endothelial cells. n=5 mice per group (2-way ANOVA and Bonferroni). Scale bars: 50 µm.ApoE-/- mice were treated with vehicle (Veh) or the PKM2 inhibitor shikonin (SKN, 1.2 mg/kg), subjected to partial ligation of the left carotid artery (LCA) and given a cholesterol-rich diet. The right, non-ligated artery (RCA) was used as a control. 3-Nitrotyrosine (3NT, green) levels in the RCA and LCA 3 days after ligation. CD31 (red) was included to label endothelial cells. n=5 mice per group (2-way ANOVA and Bonferroni). Scale bars: 50 µm.
Figure 7ApoE-/- (-/-) and ApoEYF (YF) mice were subjected to partial ligation of the left carotid artery (LCA) and given a cholesterol-rich diet. ICAM1 and VCAM1 (green) expression in the LCA 2 days after ligation. CD31 (red) was included to label endothelial cells and nuclei are highlighted with DAPI (gray). Comparable images were obtained in 4 additional animals in each group. Scale bars: 50 µm.ApoE-/- (-/-) and ApoEYF (YF) mice were subjected to partial ligation of the left carotid artery (LCA) and given a cholesterol-rich diet. Percentage of neutrophils and monocytes infiltrated into the LCA 7 days after ligation and high cholesterol diet feeding; n=9-10 mice per group (Unpaired Student's t test).Representative images and quantification of ICAM1 (green) and VCAM1 (red) staining in human endothelial cells pre-treated with the PKM2 inhibitor shikonin (SKN, 1 µmol/L) or solvent (Sol) for 45 minutes and then stimulated with interleukin-1β (IL-1, 20 ng/ml) or solvent (CTL) for 90 min. Nuclei are highlighted with DAPI (gray). n=6 independent cell batches (2-way ANOVA and Bonferroni). Scale bars: 20 µm.Percentage of neutrophils and macrophages infiltrated into the LCA from ApoE-/- mice treated with Veh or SKN (1.2 mg/kg) 7 days after ligation and high cholesterol diet feeding; n=4-6 mice per group (Unpaired Student's t test).
Figure 8Plaque burden in ligated carotid arteries from ApoE-/- (-/-) and ApoEYF (YF) mice fed a high cholesterol diet for 21 days; scale bars: 2 mm. Intimal and medial thickness was determined at four specific locations (proximal, middle 1, middle 2, distal) in cryo-sectioned arteries stained with Oil Red O; scale bars: 200 µm. n=7 mice per group (Unpaired Student's t test).Oil Red O staining of plaques in aortae from mice fed a Western diet for four (B) or six months (C); scale bars: 3 mm. n=6 (B) or n=12 (C) mice per group (Unpaired Student's t test).
Figure 1B. Instability of BU-1 expression in timeless cells. FACS plots of wild type and timeless (clone 1) DT40 cells stained with anti-Bu-1 conjugated with phycoerythrin. Each line represents the Bu-1 expression profile of an individual clonal population. Unstained controls are shown in blue.C. Fluctuation analysis for Bu-1 loss in wild-type DT40 cells and two independent timeless clones generated by CRISPR-Cas9 targeting (clones 1 and 2; , timeless (clone 1) complemented by expression of human Timeless cDNA and a timeless mutant on a background in which the endogenous +3.5 G4 has been deleted (ΔG4)D. Fluctuation analysis for Bu-1 loss in DT40 wild-type and tipin cells.
Figure 2D. The DNA-binding affinity of DBD was measured by fluorescence anisotropy, titrating the DBD protein against Cy3 3'-labelled ssDNA, dsDNA and G4 DNA The top panel shows binding curves for ss- and dsDNA, the bottom panel shows the binding curve for the G4 DNA substrate.
Figure 5A. Enhanced recruitment of DDX11 to chromatin associated PCNA following exposure to 4 µM PDS for 24 hours. PCNA was precipitated from cross-linked chromatin and the immunoprecipitate blotted for FLAG-DDX11.B. Fluctuation analysis for Bu-1a loss in wild-type DT40 cells, two independent ddx11 clones generated by CRISPR-Cas9 targeting (clones 1 and 2) and one ddx11 clone generated by conventional homologous recombination gene targeting (clone 3). Each symbol represents the percentage of cells in an individual clone expanded for 2-3 weeks that have lost Bu-1ahigh expression.C. Fluctuation analysis for Bu-1a loss variant generation in wild-type cells, ddx11 (clone 1) cells, ddx11 (clone 1) complemented by expression of chicken DDX11 WT cDNA, ddx11 (clone 1) complemented by expression of helicase-dead form of chicken DDX11 (K87A) cDNA, and a ddx11 clone generated in cells in which the endogenous +3.5 G4 has been deleted (ΔG4).D. Fluctuation analysis for Bu-1 loss in two independent timeless/ddx11 double-mutant clones (#1 and #2), ddx11 expressing DDX11KAK and fancj and fancj/ddx11 double-mutants. Fluctuation analyses for wild type, timeless #1 and ddx11 #1 are shown for comparison.
Figure 6A. Growth curves for DT40 wild type, ddx11, timeless and ddx11/timeless cells, with and without 4 μM pyridostatin (PDS). Cells were seeded at 5 x104 cells/ml on day 0 and the viable cells were counted each 24 h for 4 days. Bars represent SD of two independent experiments performed in duplicate. Doubling times (DMSO): WT 13 hours, timeless 18 hours, ddx11 16 hours, ddx11/timeless 24 hours. Doubling times (PDS): WT 13.6 hours, timeless 27 hours, ddx11 25.7 hours, ddx11/timeless 47.5 hours.B. DDR signalling detected by phosphorylation of histone H2AX (γ-H2AX) by flow cytometry in untreated cells or cells exposed to 4 μM PDS for 3 days. Pale histogram, untreated; dark histogram, treated; black dotted line, positive control cells treated with 0.1 µM cisplatin, also for 3 days. C. Quantification of γ-H2AX in DT40 wild type, ddx11, timeless and ddx11/timeless cells treated with 4 μM PDS for 3 days. The central band represents the median, the box the 25th - 75th centile and whiskers the minimum to maximum range of three independent experiments performed in duplicate.
Figure 7A. Correlation of magnitude and direction of change of genes dysregulated (relative to wild type) in timeless vs. ddx11 DT40 cells. rs (Spearman rho) is shown for each correlation.B. Genes dysregulated in timeless, ddx11 and fancj mutants have a higher density of G4s around their TSS. Cumulative fraction of the genes dysregulated in timeless (red), ddx11 (blue) and fancj (green) containing n (x-axis) G4 motifs within 1.5kb of the TSS compared with all genes (black).C. Metagene analysis showing G4 frequency around the TSS of genes dysregulated (up or down) in timeless (left panel), ddx11 (centre panel) and fancj (right panel) compared with all genes (black line). G4 frequency is calculated separately for coding (above the x-axis) and template strands (below the x-axis).
Figure 1B Confocal images of HeLa cells transiently expressing GFP-CBPs or GFP. The dotted lines show each cell shape. Scale bars, 10 µm.C Confocal images of HeLa cells transiently expressing GFP-CbpCT4 and mCherry-LC3 (upper). The fluorescence intensities of GFP-CbpCT4 (green) and mCherry-LC3 (red) along the arrow are shown in the graph at the bottom.D Lysates from 293T cells transiently expressing GFP-Cbps or GFP were subjected to SDS-PAGE and analyzed by immunoblotting using antibodies against LC3, GFP, or actin.E Lysates from 293T cells transiently expressing GFP-CbpCT4, GFP-LytR, or GFP in the presence or absence of chloroquine were subjected to SDS-PAGE and analyzed by immunoblotting using antibodies against LC3, GFP, or actin.F MEFs were infected with S. pneumoniae R6 WT or ΔcbpF for the indicated periods, and the intracellular survival of bacteria expressed as the number of CFUs.G p62-KO MEF cells infected with S. pneumoniae R6 ΔcbpF/pCbpFR6-FLAG for 2 h were fixed and stained with DAPI and an anti-FLAG antibody, and representative epifluorescence images are shown. Scale bars, 10 µm.
Figure 2A Quantification of the band intensities following streptavidin-based pulldown assays using the in vitro-translated biotinylated CbpCT4 and FLAG-tagged autophagy-related proteins shown in Fig EV2A.B Quantification of the band intensities following GST-pulldown assays with 293T cell lysates expressing the autophagy-related proteins and recombinant GST-CbpFR6 shown in Fig EV2D.C Lysates from 293T cells transiently expressing 3Myc-Atg14 or Atg5-3Myc, and GFP-CbpCT4 or GFP were immunoprecipitated with GFP-Trap, and the bound proteins were analyzed by immunoblotting.D Lysates from 293T cells transiently expressing GFP-CbpCT4 or GFP, and 6Myc-Atg14 were immunoprecipitated with an anti-Myc antibody and Protein G PLUS-Agarose. The bound proteins were analyzed by immunoblotting.E Recombinant GST-CbpFR6 or GST, and 3Myc-Atg14 were used for GST-pulldown assays. The bound proteins were analyzed by immunoblotting using an anti-Myc antibody.F MEFs infected with R6 ΔcbpF expressing CbpFR6-FLAG for 2 h were subjected to IP and assayed using anti-HA agarose beads. The bound proteins were analyzed by immunoblotting using an anti-FLAG antibody.
Figure 3A Lysates from MEFs stably expressing HA-Atg14 infected with S. pneumoniae TIGR4 WT or ΔcbpC for 1, 2, or 3 h in the presence or absence of cycloheximide were subjected to SDS-PAGE and analyzed by immunoblotting with the indicated antibodies.B MEFs/HA-Atg14 cells were infected with S. pneumoniae TIGR4 WT or ΔcbpC for 1, 2, or 3 h in the presence or absence of Bafilomycin A1 (BafA1). The lysates were subjected to SDS-PAGE and analyzed by immunoblotting with the indicated antibodies.(C A549 cells were infected with S. pneumoniae R6 WT or ΔcbpC for 2 h and fixed and stained with DAPI and an anti-Atg14 Representative epifluorescence images are shown. Scale bars, 10 µm. The percentages of perinuclear-localizing Atg14 containing cells were quantified.A549 cells were infected with S. pneumoniae R6 WT or ΔcbpC for 2 h and fixed and stained with DAPI and -GM130 antibody. Representative epifluorescence images are shown. Scale bars, 10 µm. The percentages of intact Golgi apparatus-containing cells were quantified.G S. pneumoniae (Sp) invasion-permissive A549 cells (marked with GFP) and Sp invasion-non-permissive (pIgR knocked down) A549 cells were co-cultured at a 1:3 ratio. Atg14-disappearance experiments were conducted, and representative epifluorescence images are shown. Scale bars, 10 µm. The lines show each cell shape and the arrows show invasion-permissive A549 cells marked with GFP. H The percentages of perinuclear-localizing Atg14 containing cells in (G) were quantified.I Lysates from 293T cells transiently expressing GFP-CbpC or GFP, and HA-Atg14 were subjected to SDS-PAGE and analyzed by immunoblotting using antibodies against HA or GFP.J Lysates from 293T cells transiently expressing GFP-CbpCT4 or GFP were immunoprecipitated using GST-GFP-Nanobody. Additionally, beads were mixed with lysates from 293T cells transiently expressing p62-3Myc and HA-Atg14, and bound proteins were analyzed by immunoblotting.K A549 cells treated with the indicated siRNAs were infected with S. pneumoniae R6 WT or ΔcbpF for the indicated durations. The cells were fixed and stained with DAPI and an anti-Atg14 antibody, and percentages of perinuclear-localizing Atg14 containing cells were quantified.L Lysates from MEFs stably expressing GFP-CbpCT4 or GFP in the presence or absence of rapamycin or chloroquine were subjected to SDS-PAGE and immunoblotted using antibodies against LC3 or p62.M Quantification of NanoBRET signals in 293A cells transiently expressing HaloTag-Stx17 and Nanoluc-Atg14 in the presence or absence of GFP-CbpC or GFP.
Figure 4B GST-pulldown assays performed using GST-CbpFR6 or GST and lysates from 293T cells expressing GFP-Atg14 derivatives or GFP. The bound proteins were analyzed by immunoblotting using an anti-GFP antibody.D, E GST-pulldown assays using GST-CbpFR6 derivatives and lysates from 293T cells expressing GFP-Atg14 CCD or GFP. The bound proteins were analyzed by immunoblotting using an anti-GFP antibody. Each GST-CbpFR6 derivative-bound bead was confirmed by Coomassie brilliant blue (CBB) staining.H GST-pulldown assays performed using GST-CbpFR6 mutants or GST and lysates from 293T cells expressing GFP-Atg14 CCD or GFP. The bound proteins were analyzed by immunoblotting using an anti-GFP antibody. Each GST-CbpFR6 mutant-bound bead was confirmed by CBB staining.I Lysates of 293T cells transiently expressing GFP-CbpCT4 mutants or GFP were subjected to SDS-PAGE and analyzed by immunoblotting using antibodies against LC3, GFP, or actin.J Confocal microscopy images of HeLa cells transiently expressing the indicated GFP-CbpCT4 mutants. Scale bars, 10 µm.
Figure 5B Lysates from 293T cells transiently expressing p62-3Myc and GFP-CbpCT4 variants were immunoprecipitated using a GST-GFP-Nanobody fusion protein. Bound proteins were analyzed by immunoblotting.E Lysates from 293T cells transiently expressing p62-3Myc and GFP-CbpCT4 variants were immunoprecipitated using the GST-GFP-Nanobody protein. Bound proteins were analyzed by immunoblotting.G Lysates of 293T cells transiently expressing GFP-CbpCT4 and p62-3Myc variants were immunoprecipitated with the GST-GFP-Nanobody protein. Bound proteins were analyzed by immunoblotting using the indicated antibodies.H A549 cells infected with the indicated S. pneumoniae strains for 2 h were fixed and stained with DAPI and an anti-Atg14 antibody, and the percentages of perinuclear-localizing Atg14 containing cells were quantified.I Representative epifluorescence images in (H) are shown. Scale bars, 10 µm.
Figure 6D GST-pulldown assays using the indicated GST-fusion proteins or GST and lysates from 293T cells expressing GFP-Atg14 CCD or GFP. Bound proteins were analyzed by immunoblotting using an anti-GFP antibody.E Lysates from 293T cells expressing GFP-fusion proteins or GFP were subjected to SDS-PAGE and analyzed by immunoblotting using antibodies against LC3, GFP, or actin.F Confocal images of HeLa cells transiently expressing GFP-fusion proteins. Scale bars, 10 µm.H, I GST-pulldown assays using the indicated GST-fused proteins or GST and lysates from 293T expressing GFP-Atg14 CCD or GFP. Bound proteins were analyzed by immunoblotting using an anti-GFP antibody.
Figure 1Partial embryonic lethality after E11.5. Chi-square, **** p<0.0001. E11.5 n=114 embryos, E14.5 n=70 embryos, Adult n=314 born pups.Hindbrain vessel morphology. IsolectinB4 (IsoB4; white), ERG (red) and EdU incorporation (green). EdU signal was masked with ERG signal. Scale bar, 50 µm.Hindbrain vessel density. IsolectinB4 vessel area normalized to wildtype (WT) mean; one dot is two fields/mouse; error bars: SD; unpaired T test, * p <0.05. n=18-20.Hindbrain EC proliferation. EdU incorporation in ERG-positive ECs (double-positive cells, yellow in B). One dot is two fields/mouse; error bars: SD; unpaired T test, *p < 0.05. n=7-12.Reduced weight gain in the adult. Error bars: SD; 2-way ANOVA p=0.0009; Sidak's multiple comparison test, **p <0.01. n=13-20 mice.P6 retina vessel morphology. IsolectinB4 (IsoB4) in black; the outer 20% of the vascularized area in pink. Scale bar, 250 µm.Vessel parameters in the P6 developing retina. G. Radial outgrowth (distance between optic nerve and vascular front).Vascularized area. I. Vessel area in the outer 20% of the retinal vasculature; pink in F (vessel area normalized to vascularized area). Each dot represents one retina/mouse; n=3-4.EdU incorporation in ERG-positive ECs normalized to total ERG-positive ECs. Each dot represents one retina/mouse; error bars: SD. n=8-9.