The largest database of trusted experimental protocols

Anti flag tag

Manufactured by Merck Group
Sourced in United States

The Anti-FLAG tag is a laboratory tool used for the detection and purification of proteins that have been engineered to carry a specific peptide sequence. The tag is a small, highly antigenic peptide that can be attached to the target protein, allowing it to be recognized by specific antibodies. This enables researchers to identify, isolate, and study the tagged proteins using various biochemical techniques.

Automatically generated - may contain errors

61 protocols using anti flag tag

1

Immunoblotting and Co-Immunoprecipitation Protocols

Check if the same lab product or an alternative is used in the 5 most similar protocols
For immunoblotting, cells were lysed using RIPA buffer (25 mM Tris-HCl pH 7.6, 150 mM NaCl, 1% NP-40, 1% sodium deoxycholate, 0.1% SDS) (Thermo Fisher Scientific) supplemented with Protease Inhibitor Cocktail and Phosphatase Inhibitor followed by centrifugation at 15,000×g for 10 min at 4 °C. Protein concentration was measured using the DC Protein Assay Kit (Bio-Rad) and equal amount of proteins were analyzed by SDS-PAGE and western blot analysis using standard procedure.
For co-immunoprecipitation experiments, cells were lysed using NP40 Lysis buffer (Boston BioProducts). Equal amounts of cleared cell lysates were adjusted to the same volume and incubated with anti-Flag tag (Sigma Aldrich) or anti-Myc tag (Thermo Fisher Scientific) magnetic beads for overnight incubation at 4 °C with gentle agitation. Beads were washed four times before elution with SDS sample buffer for immunoblot analysis.
Antibodies used in this study are anti-Flag tag (Cat# F1804, Sigma Aldrich), anti-Myc tag (Cat# 2272S, CST), anti-HA tag (Cat# 3724P, CST), anti-V5 (Cat# 13202S, CST), anti-GAPDH (Cat# 8884S, CST), anti-SAV1 (Cat# 3507S, CST), anti-GFP (Cat# A-11122, Thermo Fisher), anti-Lamin A/C (Cat# 2032, CST), anti-YAP (Cat#14074, CST, anti-YAP/TAZ (Cat#8418, CST), anti p-YAP (Cat# 4911, CST) anti Histone H3 (Cat# 4499, CST). See detailed information in Supplementary Table 3.
+ Open protocol
+ Expand
2

Immunoprecipitation and Kinase Assay of ULK1

Check if the same lab product or an alternative is used in the 5 most similar protocols
HCT116 cells were grown, and each dish was transfected with 8 μg of Flag-ULK1. After 48 h post-transfection, cells were lysed in MLB (10 mM Tris at pH 7.5, 2 mM EDTA, 100 mM NaCl, 1% Nonidet P-40, 50 mM NaF, 1 mM Na3VO4 and 1% EDTA-free protease and phosphatase inhibitor cocktails (Roche Applied Science)). ULK1 proteins were immunoprecipitated with anti-Flag-tag (Sigma) antibodies and then washed with MLB once and radioimmune precipitation assay buffer (50 mM Tris at pH 7.5, 150 mM NaCl, 50 mM NaF, 1 mM EDTA, 1 mM EGTA, 0.05% SDS, 1% Triton X-100, and 0.5% deoxycholate) twice followed by washing with kinase assay buffer containing 20 mM HEPES at pH 7.4, 1 mM EGTA, 0.4 mM EDTA, 5 mM MgCl2 and 0.05 mM dithiothreitol. His-MAD1 and His-MAD1-S546A were bacterially purified. The kinase reaction was performed at 37°C for 30 min, and the reaction was terminated by adding SDS sample buffer and subjected to SDS-PAGE.
+ Open protocol
+ Expand
3

Antibodies Used for Lamin, Desmin, and Chromatin Analysis

Check if the same lab product or an alternative is used in the 5 most similar protocols
Antibodies employed were: anti-lamin A/C, goat polyclonal (Byorbit orb37882, Cambridge, UK) used at 1:100 dilution for IF and in situ proximity ligation assay (PLA); anti-lamin A/C (E1, Santa Cruz Biotechnology, Dallas, TX, USA) used at 1:500 dilution for IF and in situ proximity ligation assay (PLA) and 1:2000 for WB; anti-desmin (Abcam Ab15200 Cambridge, UK) used 1:1000 for IF and 1:2000 for PLA and WB; anti-desmin (Chemicon 1:400 for IF; phalloidin (Sigma-Aldrich, St. Louis, MO, USA) 1:1000 for IF; anti H3k9ac (Abcam, Cambridge, UK) 1:200 for IF; anti YAP (Santa Cruz Biotechnology, Dallas, TX, USA) 1:100 for IF; anti-emerin (Monosan, Uden, The Netherlands) 1:100 for IF; anti-FLAG tag (Sigma-Aldrich, St. Louis, MO, USA) 1:1000 for IF; anti-plectin 1 (D6A11, Cell signaling Technology, Danvers, MA, USA) 1:100 for IF and PLA.
+ Open protocol
+ Expand
4

Antibody Sources for Signaling Proteins

Check if the same lab product or an alternative is used in the 5 most similar protocols
Antibodies were obtained from the indicated supplier: anti-PP2A A subunit (Santa Cruz Biotech, CA, USA, sc-6112), anti-PP4c (Bethyl, TX, USA), anti-phospho ERK1/2, anti-phospho Thr308 Akt, anti-total ERK1/2, anti-total Akt (Cell Signaling, MA, USA), anti-FLAG tag (Sigma, MO, USA), anti-ubiquitin (Life Sensors, PA, USA), anti-PME-1 (LifeSpan BioScience, WA, USA), anti-demethyl PP2Ac (Merck Millipore, MA, USA, 05–577), anti-total PP2Ac (Millipore, 07–324), anti-tubulin alpha (Thermo Scientific, MA, USA), p97/VCP (GeneTex, CA, USA). Anti-PP6c was generated as previously described [20 (link)].
+ Open protocol
+ Expand
5

Chromatin Immunoprecipitation with qPCR Analysis

Check if the same lab product or an alternative is used in the 5 most similar protocols

Example 13

Conventional ChIP-qPCR was performed. Briefly, cells were crosslinked with 1% formaldehyde at room temperature for 10 minutes followed by glycine quenching, cell lysis, nuclei isolation and lysis, and sonication to obtain 150-200 bp DNA fragments. Complexes were immunoprecipitated overnight using 10 μg of anti-HA tag (Cell Signaling 3724), anti-Flag tag (Sigma F1804), anti-H3K4me3 (AbCam ab8580), anti-RNA Pol-II (Active Motif 61083), or anti-DDX5 (Bethyl A300-523A). Real-time qPCR of purified DNA was performed using SYBR Green I MasterMix (Roche 4707516001) on the Light Cycler 48011 (Roche). qPCR primers are provided in Table 9.

+ Open protocol
+ Expand
6

Immunodetection of Chromatin Modifications

Check if the same lab product or an alternative is used in the 5 most similar protocols
For western blot: anti-MOZ (ab41718, Abcam); anti-DPF2 (A303-596A-1, Bethyl); anti-H3K14cr (PTM-535, PTM Biolabs)
For colocalization: anti-FLAG tag (F1804, Sigma); anti-H3K14cr (PTM-535, PTM Biolabs); Cy5-conjugated goat anti-rabbit (111-175-144, Jackson ImmunoResearch); goat anti-mouse (A-11029, Life Technologies)
Cell lines: HeLa S3 from ATCC #CCL-2.2; HeLa from ATCC #CCL-2; 293T from ATCC #CRL-3216; K562 from ATCC #CCL-243. All cell lines were no mycoplasma contamination tested by PCR.
+ Open protocol
+ Expand
7

Antibody Characterization and Applications

Check if the same lab product or an alternative is used in the 5 most similar protocols
The following antibodies were from Sigma: anti-hemagglutinin (HA)-tag (H3663; 1:1,000 IB), anti- FLAG-tag (F1804; 1:1,000 IB, 2 μg IP), and anti-Myc-tag (M4439; 1:1,000 IB, 2 μg IP). The following antibodies were from Cell Signaling Technology: non-phosphor (active) β-catenin (#8814; 1:100 IHC), Axin2 (#2151; 1:1,000 IB), β-TrCP (#4394; 1:1,000 IB), PKCδ (#2058; 1:1,000 IB), and phosphor-PKCδ (Ser643/676) (#9376; 1:1,000 IB). The following antibodies were from Santa Cruz Biotechnology: β-catenin (sc-7963; 1:1,000 IB, 2 μg IP), PKCδ (sc-937; 1:100 IF), Lamin B (sc-6216; 1:1,000 IB), tubulin (sc-8035; 1:1,000 IB), normal rabbit IgG (sc-2345; 2 μg IP), normal mouse IgG (sc-2025; 2 μg IP), β-actin (sc-47778; 1:10,000 IB), GST (sc-138; 1:1,000 IB), GSK-3β (sc-9166; 1:1,000 IB) and Cyclin D1 (sc-753; 1:1,000 IB). The following antibodies were from Bethyl Laboratories: TRIM33 (A301-060A; 1:1,000 IB, 2 μg IP), TRIM33 (IHC-00216; 1:100 IHC). The following antibody was from BD Transduction Laboratories: β-catenin (610153; 1:100 IF). The following antibody was from Abcam: Na-K-ATPase (ab76020; 1:1,000 IB). The phosphor-Ser715 β-catenin antibody (1:1,000 IB; 1:100 IHC) was produced by Signalway Antibody (College Park, MD).
+ Open protocol
+ Expand
8

Western Blot Analysis of Protein Expression

Check if the same lab product or an alternative is used in the 5 most similar protocols
Cellular extracts were prepared using lysis buffer containing 50 mM Tris HCL (pH 7.5), 250 mM NaCl, 1% NP-40, 0.5% Na-deoxycholate, 0.1% SDS, and EDTA free protease inhibitor (Roche 11873580001). Extracts were run on a 4–12% Tris-Glycine gel (BioRad) and transferred onto PVDF membranes. Blots were blocked in 5% milk PBS-T for 1 h at room temperature followed by overnight incubation at 4 °C with primary antibodies at 1:1,000 (anti-HA Tag, Cell Signaling 3724S; anti-Flag Tag, Sigma F1804; anti-DDX5, Bethyl A300-523A; anti-DDX17, Bethyl A300-509A). Horseradish peroxidase (HRP) -conjugated secondary antibodies were used at 1:10,000 (anti-rabbit HRP, Santa Cruz sc-2030) or 1:1,000 (anti-mouse HRP, Cell Signaling 7076S).
+ Open protocol
+ Expand
9

Antibody Panel for Protein Interactions

Check if the same lab product or an alternative is used in the 5 most similar protocols
Monoclonal SV40 large T antigen antibody (RRID:AB_628305), polyclonal Hsp90 antibody (RRID:AB_2121235) and EMC3 (RRID:AB_10842176) antibody were purchased from Santa Cruz Biotechnology (Santa Cruz, CA). Monoclonal VP1 antibody was kindly provided by Walter Scott (University of Miami). Polyclonal anti S-tag (RRID:AB_444553) and BiP (RRID:AB_732737) antibodies were purchased from Abcam (Cambridge, MA), whereas polyclonal anti-VP1 antibody was a gift from Harumi Kasamatsu (UCLA). Polyclonal DnaJ B14 (RRID:AB_2094414), DnaJ B12 (RRID:AB_2094404), and SGTA (RRID:AB_2188830) antibodies were purchased from Proteintech Group (Chicago, IL). Monoclonal BAP31 (RRID:AB_2537133) and polyclonal Hsc70 (RRID:AB_2544813) antibodies were purchased from Pierce (Rockford, IL), and anti-FLAG tag (RRID:AB_439687) antibody was obtained from Sigma (St Louis, MO). Rabbit anti-EMC1 (RRID:AB_10817224) antibody was purchased from Abgent (San Diego, CA). Polyclonal DnaJ C18 antibody was generated by GenScript (Piscataway, NJ). Polyclonal Derlin-1 antibody was provided by Tom Rapoport (Harvard University). Polyclonal CTA antibody was produced against denatured CTA and generated by EMD Biosciences (San Diego, CA).
+ Open protocol
+ Expand
10

Affinity Purification and Western Blotting

Check if the same lab product or an alternative is used in the 5 most similar protocols
Cells were lysed in lysis buffer (50 mM Tris–HCl, pH 7.4; 150 mM NaCl; 1 mM EDTA; 7.5% glycerol; 1% Triton X-100) supplemented with EDTA-free protease inhibitors (Roche). Benzonase was added to minimize nucleic acid contamination. The protein concentration of samples was determined and affinity purification was performed. Eluates were precipitated by sodium deoxycholate, trichloroacetic acid, and acetone. Equivalent protein quantities of lysates and pellets after precipitation were subjected to SDS-PAGE and transferred to nitrocellulose membranes. Membranes were blocked using 5% dry milk in tris-buffered saline containing 0.05% Tween-20. Membranes were then probed with selected primary antibodies, followed by the appropriate HRP-conjugated secondary antibodies (Dako, CA, USA). The following monoclonal primary antibodies were used: anti-FLAG-tag (Sigma-Aldrich), anti-BAG2 (Abcam, UK), anti-ATP citrate (Abcam), anti-RANGAP1 (Abcam), antiCLASP-1 (Abcam), anti-Sec5 (Santa Cruz Biotechnology, CA, USA), anti-Sec8 (Biocompare, CA, USA), anti-Prohibitin 2 (Santa Cruz Biotechnology), anti-Angiomotin (Santa Cruz Biotechnology, USA), anti AIF (Abcam), and anti-Prohibitin (Abcam).
+ Open protocol
+ Expand

About PubCompare

Our mission is to provide scientists with the largest repository of trustworthy protocols and intelligent analytical tools, thereby offering them extensive information to design robust protocols aimed at minimizing the risk of failures.

We believe that the most crucial aspect is to grant scientists access to a wide range of reliable sources and new useful tools that surpass human capabilities.

However, we trust in allowing scientists to determine how to construct their own protocols based on this information, as they are the experts in their field.

Ready to get started?

Sign up for free.
Registration takes 20 seconds.
Available from any computer
No download required

Sign up now

Revolutionizing how scientists
search and build protocols!