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Flag tag f3165

Manufactured by Merck Group
Sourced in United States

The Flag-tag (F3165) is a protein tag that can be fused to a target protein for the purpose of detection and purification. It consists of a small, hydrophilic polypeptide sequence that can be recognized by specific antibodies. This product can be used in various research applications that require the identification and isolation of tagged proteins.

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4 protocols using flag tag f3165

1

Antibody Sources for Cell Signaling

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The primary antibodies of TEAD1 (sc-376113), TEAD4 (sc-134071), and CTGF (L-20) (sc-14939) were from Santa Cruz (Dallas, TX, USA). YAP1 (ab52771) antibody and HA tag (ab18181) were achieved from Abcam (Cambridge, MA, USA). AMOTL1 (HPA001196) and Flag-tag (F3165) antibodies were obtained from Sigma-Aldrich (St. Louis, MO, USA). Other primary antibodies were from Cell Signaling (Danvers, MA, USA), including p21 (#2946), p27 (#2552), pRb (Ser807/811) (#9308), Erk (#9102), pErk (#9101), Myc (#2278), cyclin D1 (#2978), c-Myc (#9402), and GAPDH (#2118). Anti-Mouse IgG-HRP (Dako, Glostrup, Denmark, 00049039, 1:30,000) and anti-Rabbit IgG-HRP (Dako, 00028856, 1:10,000) were used for secondary antibodies. The related protocol was suggested before [13 (link)].
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2

Protein Expression Analysis by Western Blot

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Cells were lysed in RIPA buffer supplemented with complete protease inhibitor cocktail mix. Equal amount of proteins were separated by SDS-PAGE and subsequently transferred to 0.45 μm PVDF membrane (Thermo Scientific). Antibodies used were CHOP (D46F1), ATF-4 (D4B8), PRMT1 (F339), PARP (#9542) from Cell Signaling Technology; CREB-2/ATF4 (C-20), ATF-3 (C-19), GAPDH (H-12), β-actin (AC-15) from Santa Cruz Biotechnology; HA tag (3F10) from Roche; FLAG tag (F3165) from Sigma; anti-rabbit and anti-mouse HRP from Dako; anti-rabbit IgG light chain HRP (ab99697) from Abcam. Protein expression was detected by ECL™ Western Blotting Prime Detection Reagent (GE Healthcare) and visualized using Fluorochem E (Westburg, Cell Biosciences) or autoradiography.
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3

Western Blot Analysis of Nuclear Proteins

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Nuclear extracts or IP eluates from brain tissues or HEK293T cells were resolved on 5–12% Tris-Glycine gels and transferred to nitrocellulose. Membranes were incubated overnight in the following primary antibodies: MeCP2 (Men-8, M7443, Sigma), TOP2β (H-286, sc-13059, Santa Cruz), TOP1 (H-5, sc-271285, Santa Cruz), Myc tag (ab9132, Abcam), FLAG tag (F3165, Sigma), α-Tubulin (EP1332Y, ab52866, Abcam). Following washes, membranes were incubated with HRP-conjugated secondary antibodies and visualized by enhanced chemiluminescence (ECL, Cell Signaling Technology) or secondary antibodies conjugated to IRdye 800 and imaged with LiCOR Odyssey.
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4

Screening Compound Library Inhibitor Assay

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The screened compound library (L1400) was a product of Selleck Chemicals (Houston, TX). The inhibitors, including Necrostatin-1, GSK’872, z-VAD-fmk, MG132, SB216763, PD98059, and LY294002, were purchased from Selleck Chemicals. Cell culture medium, Fetal Bovine Serum (FBS), and supplements were purchased from Invitrogen (Grand Island, NY). Primary antibodies against EGFR (#4267, 1:1000), ERK1/2 (#9102, 1:1000), Akt (#4691, 1:1000), p-EGFR-Tyr1068 (#3777, 1:1000), p-ERK1/2-Thr202/Tyr204 (#4370, 1:1000), p-Akt-Ser473 (#4060, 1:1000), PARP (#9532, 1:1000), cleaved-caspase 3 (#9664, 1:1000), Bax (#14796, 1:1000), VDAC1 (#4661, 1:2000), cytochrome C (#11940, 1:1000), Mcl-1 (#39224, 1:1000), ubiquitin (#3936, 1:1000), ubiquitin (#43124, 1:1000), α-Tubulin (#2125, 1:5000), GSK3β (#12456, 1:1000), and β-actin (#3700, 1:10000) were purchased from Cell Signaling Technology, Inc. (Danvers, MA). Flag-tag (F3165, 1:5000) antibody was obtained from Sigma Aldrich (St. Louis, MO). Antibodies against FBW7 (ab109617, 1:1000) and FBW7 (ab187815, 1:1000) were obtained from Abcam (Cambridge, UK). Antibodies for immunohistochemistry staining (IHC), including anti-ki67 (ab15580, 1:300) and anti-p-Akt (ab81283, 1:100) were obtained from Abcam. Anti-p-EGFR (#3777, 1:200), and anti-Mcl-1 (#39224, 1:100) were purchased from Cell Signaling Technology, Inc.
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