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5 protocols using rat anti mcherry

1

Purification and Western Blot Analysis of Plasmodium Proteins

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P. falciparum parasites were released from erythrocytes by treatment with 0.15% saponin in PBS. Murine erythrocytes infected with the pv5-tag-GFPPV or exp2-mCherry P. berghei lines (62 (link)) were purified on a Nycodenz gradient and lysed hypotonically for 1 h on ice in 10 mM Tris⋅HCl, pH 7.5. P. berghei lysates were centrifuged for 50 min at 100,000 × g. Membrane pellets were resuspended in 0.1 M Na2CO3 in PBS or in 1% Triton X-100 in PBS, respectively, and centrifuged for 50 min at 100,000 × g. Proteins were separated on SDS-polyacrylamide and transferred to nitrocellulose membranes. Western blotting was performed using rat anti-mCherry (1:5,000; ChromoTek), chicken anti-GFP (1:5,000; Abcam), rat anti-HA (1:1,000; Sigma Aldrich), rat anti-PfBiP (1:1,000) (63 (link)), and rabbit anti-human hemoglobin α-primary antibodies (1:1,000; Abcam) followed by chemiluminescence detection with horseradish peroxidase-coupled secondary antibodies (1:10,000; Sigma Aldrich, or 1:5,000; Jackson ImmunoResearch).
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2

Validated Immunostaining Antibodies for C. elegans

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The following primary antibodies were used at the indicated dilutions: rabbit anti-GFP-488-conjugated (1:200) (Invitrogen, A21311), goat anti-GFP-FITC-conjugated (1:200) (Abcam, ab6662), rat anti-mCherry (1:1000) (Chromotek, 5F8), rabbit anti-COH-3/4 (1:400)21 (link), mouse anti-REC-8 (1:100) (Novus Biologicals, 29470002), guinea pig anti-SYP-1 (1:400)26 (link), chicken anti-SYP-1 (1:300)47 (link), guinea pig anti-HTP-3 (1:800)32 (link), rabbit anti-HIM-3 (1:400)33 (link), rabbit anti-HTP-1/2 (1:400)47 (link), rabbit anti-PLK-2 (1:500)65 (link), guinea pig anti-SUN-1 pS12 (1:1000)19 (link), rabbit anti-RAD-51 (1:10000) (Novus Biologicals, 29480002), mouse anti-HA (1:200) (Cell Signalling, 23675), rabbit anti-DSB-2 (1:1000)9 (link), rabbit anti-HIM-8 (1:500) (Novus Biologicals, 41980002). Phospho-specific antibodies against HIM-8 pT64 (1:400) were produced by injecting rabbits with the synthetic peptide DTPRFSpTPIVPNVC (GenScript). Polyclonal anti-HIM-8 pT64 antibodies were affinity purified by binding to a column containing the phospho-peptide and the specificity of the antibodies was validated by absence of staining in germlines of chk-2 mutant worms.
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3

Western Blot Analysis of NrC4a CRISPR Constructs

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Western blot was performed on N. benthamiana leaves transiently expressing slnrc4aCRISPR constructs19 . One hundred milligrams of plant tissue were ground with liquid nitrogen, and three volumes of extraction buffer (50 mM of Tris‐HCl, pH 7.5, 2 mM of MgCl2, 150 mM of NaCl, 140 mM of β‐mercaptoethanol, 2 mM of phenylmethylsulfonyl fluoride (PMSF), and one complete protease inhibitor tablet, without EDTA [Roche, Germany] per 50 ml) were added. Samples were centrifuged, and supernatant cytosolic fraction was discarded (or collected if required). Pellets were ground using two volumes of EB with 1% Triton X‐100 and incubated in a rotating wheel at 4 °C for 20 min before centrifugation. Supernatant samples (TSM) were collected and boiled after adding sample buffer (8% sodium dodecyl sulfate, 40% glycerol, 200 mM of Tris‐Cl, pH 6.8, 388 mM of dithiothreitol, and 0.1 mg ml−1 of bromophenol blue dye). Samples were run in sodium dodecyl sulfate-polyacrylamide gel electrophoresis, blotted onto nitrocellulose membranes, and incubated rat anti‐mCherry (Chromotek).
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4

Immunostaining of Meiotic Proteins in Caenorhabditis elegans

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The following primary antibodies and dilutions were used: goat anti-GFP-488-conjugated (1:200) (Roche), rat anti-mCherry (1:1000) (5F8, ChromoTek), rabbit anti-COH-3/4 (1:400) (Crawley et al., 2016 (link)), mouse anti-REC-8 (1:100) (Novus Biologicals), guinea pig anti-HCP-6 (1:400) (Chan et al., 2004 (link)), rabbit anti-HIM-8 (1:500) (Novus Biologicals), and rabbit anti-RAD-51 (Das et al., 2022 (link)).
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5

Western Blot Analysis of Parasite Proteins

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Protein samples were resolved by SDS-PAGE and transferred to nitrocellulose membranes (Protran) in a tankblot device (Bio-Rad) using transfer buffer (0.192 M Glycine, 0.1% SDS, 25 mM Tris) with 20% methanol. Blocking of membranes and dilutions of antibodies were done in PBS containing 5% skim milk. Washing steps were done with PBS. Primary antibodies were applied in the following dilutions: mouse anti-GFP (Roche) 1:1000; rabbit anti-GFP (Thermo) 1:2000; rat anti-mCherry, 1:1000 (Chromotek); rabbit anti-SERA5, 1:2000 (newly raised); rabbit anti-REX3, 1:2000 (newly raised); mouse anti-SBP1N, 1:2500 (newly raised); rabbit anti-aldolase, 1:4000 (newly raised); mouse anti-HSP101, 1:1000 [7 (link)]; rabbit anti-DHFR (Abcam), 1:1000; rat anti-HA (Roche) 1:4000. Horseradish peroxidase-conjugated secondary antibodies used were goat anti-rat (Dianova) and goat anti-mouse (Dianova) and diluted 1:3000 as well as donkey anti-rabbit (Dianova) 1:2500 and applied after three washes. Immunoreactions were detected by enhanced chemiluminiscence (Bio Rad/ Thermo) and detected on CEA RP NEW x-ray films (Agfa). For quantification of Western blot signals, band intensities were measured with a Chemi Doc XRS imaging system (Bio-Rad) and densitometry analyses were done with Image Lab Software 5.2 (Bio-Rad). Data are representative of three independent experiments.
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