Rabbit anti fanca

Medium and cells were harvested in PBS-containing 1 mM Na₃VO₄ and 1 mM NaF. Cells were pelleted before lysis in 50 mM Tris.HCl pH 7.5, 150 mM NaCl, 1% NP-40, 0.5% deoxycholate and 0.1% SDS. Samples were thawed on ice, centrifuged at 14,000 rpm for 20 min at 4 °C and supernatants quantified by BCA assay from Pierce (Leicestershire, UK). 30 μg total protein lysate was separated by reducing SDS-PAGE, transferred to PVDF (GE Healthcare, Bucks, UK) and blocked with 5% non-fat dry milk in TBS. The following primary antibodies were used: rabbit anti-HSP72 from Stressgen (Exeter, UK); rabbit anti-GAPDH, rabbit anti-ATR, rabbit anti-phospho-ATR (S428), rabbit anti-CHK1, rabbit anti-phospho-CHK1 (S345), rabbit anti-RAD51, rabbit anti-ATM, rabbit anti-phospho-ATM (S1981), rabbit anti-phospho-BRCA1 (S1524), rabbit anti-phospho-p53 (S15) and rabbit anti-phospho-H2Ax (S139) were purchased from Cell Signaling (MA, USA); rabbit anti-FANCA was purchased from Bethyl Laboratories (TX, USA). Secondary antibodies used were sheep anti-mouse IgG and donkey anti-rabbit IgG HRP from GE Healthcare (Buckinghamshire, UK). Chemiluminescent detection was carried out using immobilon western substrate from Millipore (East Midlands, UK). In vivo samples were processed using a Precellys®24 homogenizer from Bertin Technologies (Montigny, France).