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8 protocols using h6908

1

ChIP-Seq Profiling of Histone Marks

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Standard ChIP assays were performed as described in Supplemental Experimental Procedures with antibodies against H3K27me3 (Millipore, #07-449), H3K4me3 (Abcam, #ab8580), HA tag (Sigma, #H6908), Jmjd3 (Abcam, #ab85392) or normal rabbit IgG.
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2

ChIP-seq and ChIP-qPCR of HA-T-VP64

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mCherry+ 416B cells were sorted by FACS (24 h after dox addition), then expanded without dox before HA-T-VP64 expression was induced for 48 h and cells crosslinked using 1% formaldehyde (Sigma). ChIP-qPCR and ChIP-seq were performed and analysed essentially as described previously (Wilson et al., 2010b (link)) using anti-HA (Sigma, H6908) and anti-H3K27Ac (Abcam, ab4729) antibodies, and the ChIP-qPCR primers listed in supplementary material Table S6. ChIP-seq data are available at GEO with accession number GSE61189.
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3

Immunofluorescence Staining of Cultured Cells

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Cells were rinsed 1× in prewarmed PBS and fixed by incubating in prewarmed 4% paraformaldehyde for 15 min at 37°C. Cells were then rinsed 3× for 5 min with PBS and permeabilized in 0.1% Triton X-100 for 15 min at RT. Cells were then rinsed with PBS 3× for 5 min and then blocked in 5% BSA for 1 h at 37°C. Following blocking, cells were briefly rinsed 1× with PBS and incubated with 1° antibodies for 1 h at 37°C (anti-HA rabbit, Invitrogen H6908; anti-myc rabbit; Abcam ab9106) or Alexa Fluor-488 conjugated streptavidin (Invitrogen S32354), both at 1:1000 dilution. Cells were then rinsed 4× for 5 min with PBS and incubated with 2° antibodies (Alexa Fluor 647 F(ab’)2-goat anti-rabbit IgG (H+L) A21246, 1:1000 and Alexa-Fluor 568 Phalloidin (Invitrogen A12380)), 1:200 for 30 min at RT. Following 2° antibody incubation, cells were rinsed 4× for 5 min in PBS and mounted on glass slides using ProLong Gold antifade reagent (Life Technologies, Invitrogen, P36930).
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4

Western Blot Analysis of Cellular Proteins

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Proteins in cell lysates were separated by electrophoresis and transferred to a nitrocellulose Amersham Protran membrane (GE Healthcare). The membrane was blocked for 1 hr in 5% milk in PBS containing 0.1% Tween-20 at 23°C. Then, the membrane was incubated with primary antibody (Ab) diluted in blocking buffer at 4°C overnight. Antibodies used were from the following sources: DNA-PKcs (NeoMarkers, MS-423-P1, diluted 1:1000), Ku70 (AbCam, ab3114, diluted 1:1000), Ku80 (Santa Cruz, sc-1484, 1:500), FLAG (Sigma-Aldrich, F7425, diluted 1:5000), HA (Sigma-Aldrich, H6908, diluted 1:1000), P-IRF3 (Abcam, ab76493, diluted 1:1500), and α-tubulin (Merck Millipore, 05-829, diluted 1:10000). Membranes were probed and visualized with LI-COR Biosciences secondary Abs and the Li-Cor Odyssey infrared imaging system according to the manufacturer’s instructions. A quantification of protein bands was performed, where indicated, by using Odyssey software (LI-COR Biosciences).
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5

Immunofluorescence and Western Blotting Protocol

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Antibodies used for immunofluorescence include anti-pH3 (Abcam, ab14955; 1:1,000), anti-Tbr1 (Abcam, ab31940; 1:300), anti-mCherry (Abcam, ab167453; 1:1,000), anti-NeuN (Millipore, MAB377; 1:300), anti-HA (Sigma-Aldrich, H6908; 1:2,000), anti-FLAG (Abcam, ab1162; 1:2,000), anti-LIC1 (Tan et al., 2011 (link); 1:300), and anti-LIC2 (Tynan et al., 2000a (link); 1:300). Donkey fluorophore–conjugated secondary antibodies (Jackson Labs, 1:500 dilution) were used.
Antibodies used for Western blotting include anti-p150Glued (BD, 610474; 1:1,000), anti–dynein IC clone 74.1 (University of Virginia, Charlottesville, VA; 1:1,000), anti-LICs (Tynan et al., 2000a (link); 1:500), anti-LIC1 (Tan et al., 2011 (link); 1:500), anti-LIC2 (Tynan et al., 2000a (link); 1:1,000), anti–dynein HC (Suzuki et al., 2007 (link); 1:1,000), and anti-GAPDH (Abcam, ab8245; 1:1,000). To develop in a LI-COR system, fluorescent secondary antibodies (1:10,000) were acquired from Invitrogen and Rockland.
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6

Extraction and Western Blot Analysis of Arabidopsis Proteins

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Total proteins from Arabidopsis plants were extracted by centrifugation and resuspension in buffer, before Western Blot24 (link), with the following antibodies: anti-HA (Sigma Aldrich; H6908; 1:10,000), anti-GUS (Abcam; ab50148; 1:5,000), anti-LUC (Agrisera; AS16 3691 A; 1:1,000), anti-Ein2 (Agrisera; AS12 1865; 1:10,000; also recognize SKL from M. truncatula), anti-Bak1 (Agrisera; AS12 1858; 1:2,000), anti-Bri1 (Agrisera; AS12 1859; 1:5,000), anti-DCL1 (Agrisera; AS19 4307; 1:1,000), anti-HSP101 (Agrisera; AS07 253; 1:1,000) anti-GFP (Sigma Aldrich; SAB4301138; 1:5,000). Anti-CPK3 and anti-GAPC antibodies were raised in rabbits by Covalab (France) using purified recombinant CPK3-GST and purified recombinant AtGAPC1-GST, respectively. Anti-CPK3 antibodies were purified from rabbit serum by affinity chromatography on 6His-CPK3 coupled to CH-sepharose (GE Healthcare), while crude serum was used for anti-GAPC western blots. Anti-CPK3 and anti-GAPC were used at a dilution of 1:5000 and 1:50,000, respectively. Protein levels were normalized to Ponceau staining.
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7

Protein Extraction and Western Blot Analysis

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Cells were lysed in 50 mM Tris–HCl (pH 7.4), 150 mM NaCl, 1 mM EDTA, 1% (v/v) Triton X‐100 and 1 × proteinase inhibitors for 30 min at 4°C, and equal protein amounts were separated on 4–20% Criterion TGX SDS–PAGE gels (Bio‐Rad). Primary antibodies were incubated overnight at 4°C, and secondary antibodies were incubated for 1 h at room temperature. Membranes were developed using Pierce ECL or SuperSignal West Pico Plus (Thermo Fisher). Antibodies used were as follows: rabbit anti‐HA (Sigma Aldrich H6908; RRID:AB_260070, 1:1,000), mouse anti‐β‐actin (Abcam ab6276; RRID:AB_2223210, 1:50,000), rabbit anti‐TOP3A (Proteintech 14525‐1‐AP; RRID:AB_2205881, 1:1,000), rabbit anti‐mouse HRP (Agilent P0260; RRID:AB_2636929, 1:3,000) and swine anti‐rabbit HRP (Agilent P0217; RRID:AB_2728719, 1:3,000).
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8

Comprehensive Antibody Reference for Research

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The following antibodies were used in this study: anti-b-Actin (mouse monoclonal, Sigma-Aldrich, clone AC-15, A5441, 1:10,000), Anti-EGFR (rabbit monoclonal, Abcam, ab52894, 1:1000), Anti-Gephyrin (mouse monoclonal, Synaptic Systems, clone mAb7a, 147 021, 1:1000) Anti-GFP (chicken polyclonal, Abcam, ab13970, 1:600), Anti-GFP (rat monoclonal, ChromoTek, 3H9, 1:5000), Anti-GluA2 (rabbit polyclonal, Synaptic Systems, 182 103, 1:1000), Anti-GST (goat polyclonal, GE Healthcare, 27-4577-01, 1:10,000), Anti-HA (mouse monoclonal, Sigma-Aldrich, clone HA-7, H3663, 1:1000), Anti-HA (rabbit polyclonal, Sigma Aldrich, H6908, 1:100), Anti-LAMP1 (rabbit polyclonal, Abcam, ab24170, 1:1000), Anti-NLG1 (mouse monoclonal, Neuromab, N97A/31, 1:500), Anti-NLG2 (mouse monoclonal, Synaptic Systems, clone 5E6, 129 511, 1:2000 WB, 1:600 ICC), Anti-NLG3 (mouse monoclonal, Neuromab, N110/29, 1:500), Anti-GluN1 (rabbit monoclonal, Cell Signaling, D65B7 5704, 1:2000), Anti-SNX27 (mouse monoclonal, Abcam, clone 1C6, ab77799, 1:1000), Anti-SNX27 (rabbit polyclonal, a kind gift from Dr Martin Playford (NIH, USA), 1:2000), Anti-VPS35 (rabbit polyclonal, Abcam, ab97545, 1:2000).
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