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3 protocols using anti fak clone 4.47 conjugated agarose antibody

1

Immunoprecipitation of SRC and FAK Proteins

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Cells were seeded in 10 cm dishes, left to attach overnight and treated with compounds for 6 h (3 h for FAK-IP) prior to lysis with RIPA buffer. Protein concentration was determined using a BCA assay and 1 mg/mL samples were prepared in a microcentrifuge tube to which 20 μL Dynabeads Magnetic Beads Protein A (Invitrogen, 10002D) were added. 2 μg primary SRC antibody (Cell Signalling, 2109) or appropriate IgG control (Cell Signalling, 2729) was added, and samples rotated at 4 °C overnight. Dynabeads were washed twice with RIPA lysis buffer and three times with PBS before being resuspended in 20 μL of 1X Laemmli sample buffer. Samples were heated to 95°C for 5 min and beads were separated using the magnetic rack before lysates were analyzed for SRC (SCB, SC-8056) and FAK (Cell Signalling, 3285) by standard western blot. For the FAK-IP 1 mg of cell lysate was incubated with anti-FAK (clone 4.47)-conjugated agarose antibody (Millipore, 5-537). The agarose beads were washed twice with RIPA buffer and twice with PBS before being resuspended in 20 μL of 1X Laemmli sample buffer. Samples were heated to 95°C for 5 min and analyzed for SRC (Cell Signalling, 2109) and FAK (Cell Signalling, 3285) by western blot.
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2

Antibody Profiling for Focal Adhesion

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Antibodies used were as follows: anti-Paxillin (RRID:AB_647289), anti-GM130 (RRID:AB_398141), anti-p130Cas (RRID:AB_397667) and anti-RACK1 (RRID:AB_397577) antibodies (BD Transduction Laboratories, New Jersey, USA), anti-IFITM3 (RRID:AB_2122095) (Abcam, Cambridge, UK), anti-CoxIV (RRID:AB_10694213), anti-FAK (RRID:AB_10694068), anti-pFAK Y397 (RRID:AB_2173659), anti-pPaxillin Y118 (RRID:AB_2174466), anti-Rab7 (RRID:AB_1904103), anti-pSrc Y416 (RRID:AB_331697), anti-Src (clone 36D10) (RRID:AB_10693939), anti-LC3B (RRID:AB_2137707) and anti-GAPDH (RRID:AB_10622025) (Cell Signaling Technologies, Danvers, MA, USA), and anti-Dctn1 (RRID:AB_10842517), anti-Ambra1 (RRID:AB_2636939) and anti-pSrc Y416 (RRID:AB_309898) antibodies and anti-FAK (clone 4.47)-conjugated agarose antibody (RRID:AB_310789) (Millipore, Billerica, MA, USA). LC3B antibody was from MBL (RRID:AB_1279144) (MBL International, Woburn, MA, USA). TRITC-phalloidin was purchased from Life Technologies (RRID:AB_2572408) (Paisley, UK). Anti-rabbit (RRID:AB_2099233) or mouse (RRID:AB_330924) peroxidase-conjugated secondary antibodies were purchased from Cell Signaling Technologies. Dasatinib was obtained from Bristol Myers Squibb (Princeton, NJ, USA) and PF562271 from Pfizer (Groton, CT, USA).
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3

Immunoprecipitation and Western Blot Analysis

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Cells were seeded in 10 cm dishes, left to attach overnight and treated with compounds for 6 hours (3 hours for FAK-IP) prior to lysis with RIPA buffer. Protein concentration was determined using a BCA assay and 1 mg/mL samples were prepared in a microcentrifuge tube, to which, 20 μL Dynabeads Magnetic Beads Protein A (Invitrogen, 10002D) were added. Two micrograms of primary SRC antibody (Cell Signaling Technology, 2109) or appropriate IgG control (Cell Signaling Technology, 2729) was added, and samples rotated at 4°C overnight. Dynabeads were washed twice with RIPA lysis buffer and three times with PBS before being resuspended in 20 μL of 1× Laemmli sample buffer. Samples were heated to 95°C for 5 minutes and beads were separated using the magnetic rack before lysates were analyzed for SRC (SCB, SC-8056) and FAK (Cell Signaling Technology, 3285) by standard Western blot analysis. For the FAK-IP 1 mg of cell lysate was incubated with anti-FAK (clone 4.47)–conjugated agarose antibody (Millipore, 5–537). The agarose beads were washed twice with RIPA buffer and twice with PBS before being resuspended in 20 μL of 1× Laemmli sample buffer. Samples were heated to 95°C for 5 minutes and analyzed for SRC (Cell Signaling Technology, 2109) and FAK (Cell Signaling Technology, 3285) by the Western blot analysis.
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