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2 protocols using rpa32 ps33

1

Immunoblotting Analysis of DNA Damage Response

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Cells were treated as indicated in the appropriate figure legends and then lysed in CHAPS lysis buffer (50 mM Tris pH 7.5, 150 mM NaCl, 10% glycerol, 0.75% CHAPS, 5 μg/ml aprotinin, 5 μg/ml leupeptin, 1 mM sodium orthovanadate, 10 mM β-glycerol phosphate, 1 mM NaF, 1 mM DTT, 1 mM MgCl2, 1 μl/ml Pierce universal nuclease for cell lysis) for 20 min on ice and cleared by centrifugation. Equal amounts of lysates were separated by SDS-PAGE and proteins were detected by immunoblotting. Antibodies used were HA, RPA32, and RPA32 pS33 (1:1000, Bethyl, A300–246A). Quantification of immunoblots was performed with Image Lab 3.0 software.
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2

DNA Damage Response Antibodies

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The following antibodies were used in this study: PRP19 (ab27692, 1:400 IF, 1:1000 WB), ATM pS1981 (ab81292, 1:1000 WB), DNAPKcs pS2056 (ab18192, 1:1000 WB) and RPA32 pT21 (ab109394, 1:5000 WB) antibodies were from Abcam, CHK1 (SC-8404, 1:1000 WB), Myc (SC-40, 1:1000 WB) and HA (SC-7392, 1:1000 WB) antibodies were from Santa Cruz; RPA32 antibodies (MA1–26418, 1:500 IF, 1:1000 WB) were from Thermo, ATM (A300–299A, 1:1000 WB), RPA32 pS4/8 (A300–245A, 1:1000 WB), RPA32 pS33 (A300–246A, 1:5000 WB), RFWD3 (A301–397A, 1:250 IF, 1:1000 WB) antibodies were from Bethyl; ubiquitin antibodies were from Covance (MMS-257P, 1:1000 WB); CDC5L antibodies were from BD-Bioscience (612362, 1:1000 WB); anti-FLAG antibodies were from Sigma (F1804, 1:800 IF, 1:1000 WB); CHK1 pS345 (2348, 1:1000 WB), GAPDH (5174, 1:1000 WB), DNAPKcs (12311, 1:1000 WB) and tubulin (2144, 1:1000 WB) antibodies were from Cell Signaling.
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