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Monoclonal anti gapdh

Manufactured by Merck Group
Sourced in United States, United Kingdom

Monoclonal anti-GAPDH is a laboratory reagent used for the detection and quantification of the enzyme glyceraldehyde-3-phosphate dehydrogenase (GAPDH) in biological samples. This antibody is specific to the GAPDH protein and can be used in various immunoassay techniques, such as Western blotting, ELISA, and immunohistochemistry.

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7 protocols using monoclonal anti gapdh

1

Western Blot and Slot Blot Protein Analysis

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Protein samples (20 μg) were used for western blot and slot blot analysis. The following primary antibodies were used: polyclonal anti-LRRK2 (1:2,500; Millipore), monoclonal anti-CD45 (1:2,500; Abcam, Cambridge, MA, USA), polyclonal anti-MMP-8 (1:2,500; Abcam), monoclonal anti-β-actin (1:2,500; Abcam), and monoclonal anti-GAPDH (1:2,500; Millipore). We used horseradish peroxidase (HRP)-linked anti-rabbit (1:2,500; Vector Laboratories, Burlingame, CA, USA) or HRP-linked anti-mouse (1:2,500; Vector Laboratories) IgG antibodies as secondary antibodies. After the incubation with primary and secondary antibodies, the blotted membrane was developed using ECL prime (Merck, Boston, MA, USA). Intensity of each band was quantified using Image J program (version 1.46r; NIH), and normalized to the expression level of β-actin or GAPDH as loading control.
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2

Immunoblotting of Cardiac Proteins

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Mouse cardiac homogenates were prepared as described, subjected to electrophoresis on 6% (for RyR2) or 12% acrylamide gels (for CaMKII and PLN), and transferred onto polyvinyl difluoride (PVDF) membranes.[28 (link)] Membranes were probed with monoclonal anti-RyR2 (1:5,000; Thermo Fisher Scientific, Waltham, MA), polyclonal anti-pS2814-RyR2 (1:1,000),[17 (link)] polyclonal anti-pS2808-RyR2 (1:1,000),[28 (link)] monoclonal anti-pT286-CaMKII (1,1,000; Cayman Chemicals, Ann Arbor, MI), polyclonal anti-CaMKII (1:1,000; custom made for our lab), polyclonal anti-pT17-PLN (1:5,000; Badrilla, Leeds, UK), monoclonal anti-PLN (1:5,000; Badrilla, Leeds, UK), and monoclonal anti-GAPDH (1:10,000; Millipore, Temecula, CA) antibodies. Membranes were then incubated with secondary anti-mouse and anti-rabbit antibodies conjugated to Alexa-Fluor 680 (Invitrogen Molecular Probes, Carlsbad, CA) and IR800Dye (Rockland Immunochemicals, Gilbertsville, PA), respectively, and bands were quantified using infrared visualization (Odyssey System, Lincoln, NE) and densitometry (ImageJ Data Acquisition Software, National Institute of Health, Bethesda, MD). GAPDH was used as a loading control.
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3

Protein Extraction and Western Blot Analysis

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Cells grown to confluence on 6-well culture plates (VWR) were harvested after the specified treatment period and washed with PBS. Protein was extracted from the cells using mammalian protein extraction reagent with protease inhibitor cocktail (Pierce Biotechnology, Rockford, IL), and quantified with a protein assay (Bio-Rad, Hercules, CA). Equal amounts of protein were resolved on 8–16% Tris-HCL polyacrylamide gels (Pierce Biotechnology, Rockford, IL) and transferred to PVDF blotting membranes (Millipore, Billerica, MA). Membranes were probed with rabbit polyclonal anti-gamma glutamyl cysteine ligase, catalytic subunit (GCLC) (Abcam, Cambridge, MA), rabbit anti-cleaved caspase 3 (Cell Signaling Technology, MA), mouse anti-CHOP (Pierce Biotechnology, IL), rabbit anti-GRP78 (Sigma Aldrich, St. Louis, MO), rabbit anti-COX IV (Cell Signaling Technology, MA), rabbit polyclonal anti-GRX2 (GeneTex, Irvine, CA) and rabbit anti-β-Tubulin (Cell Signaling Technology, MA) overnight at 4°C. After incubation with corresponding secondary antibody tagged with horseradish peroxidase, signals were detected using an ECL chemiluminescence system (Pierce Biotechnology, IL). Membranes were then stripped and reprobed with monoclonal anti-GAPDH (Millipore, Billerica, MA). Protein band intensity was measured by Image Studio Software (Li-Cor, Lincoln, NE) [30 (link)].
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4

Immunoblot Analysis of Circadian Clock Proteins

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Immunoblot analyses were performed using polyclonal anti-PER1, monoclonal anti-hnRNP Q (Sigma-Aldrich), monoclonal anti-PTBP1 (Abcam), monoclonal anti-YBX1 (Abcam), polyclonal anti-hnRNP K (Abcam), monoclonal anti-hnRNP A1 (Abcam), monoclonal anti-FLAG (Sigma-Aldrich), polyclonal anti-14-3-3ζ (Santa Cruz Biotechnology) and monoclonal anti-GAPDH (Millipore) as primary antibodies. Horseradish peroxidase-conjugated species-specific secondary antibodies (goat, Santa Cruz Biotechnology; guinea pig, Santa Cruz Biotechnology; mouse, Thermo Fisher Scientific; rabbit, Jackson ImmunoResearch Laboratories) were visualized by using a SUPEX ECL solution kit (Neuronex) or a PierceTM ECL Western Blotting substrate (Thermo Fisher Scientific) under LAS-4000 chemiluminescence detection system (FUJIFILM) and a FUSION Solo S (Vilber). The acquired images were analyzed according to the manufacturer’s instructions.
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5

Immunoblotting for Protein Expression

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For immunoblotting, cells were disrupted with complete protein solubilizing buffer containing 1% SDS and 2M urea in PBS, followed by sonication. Immunoblot analyses were performed with polyclonal anti-CRY1, monoclonal anti-GAPDH (Millipore), polyclonal anti-14-3-3ζ (Santa Cruz Biotechnology), and polyclonal anti-hnRNP Q (Sigma-Aldrich) antibodies. Horseradish peroxidase-conjugated mouse (Thermo Scientific) and rabbit (Jackson ImmunoResearch Laboratories) secondary antibodies were visualized with SUPEX ECL reagent (Neuronex) and a LAS-4000 system (FUJI FILM), according to the manufacturer’s instructions. Acquired images were further analyzed with the Image Gauge program (FUJIFILM).
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6

Immunoblot Analysis of Cellular Proteins

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Immunoblot analyses were performed using polyclonal anti-CRY1, monoclonal anti-AUF1 (Millipore), polyclonal anti-14-3-3ζ (Santa Cruz Biotechnology), monoclonal anti-RPS3 (Cell Signaling), polyclonal anti-RPS14 (Santa Cruz Biotechnology), polyclonal anti-EIF3B (Santa Cruz Biotechnology) and monoclonal anti-GAPDH (Millipore) as primary antibodies. Horseradish peroxidase-conjugated species-specific secondary antibodies (goat, Santa Cruz Biotechnology; guinea pig, Santa Cruz Biotechnology; mouse, Thermo Scientific; rabbit, Jackson ImmunoResearch Laboratories) were visualized using a SUPEX ECL solution kit (Neuronex) and a LAS-4000 chemiluminescence detection system (FUJIFILM), and the acquired images were analysed using Image Gauge (FUJIFILM) according to the manufacturer’s instructions.
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7

Western Blot Analysis of NKX2.5 Protein

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Cells were homogenized in lysis buffer containing 135 mM NaCl, 1 mM MgCl2, 2.7 mM KCl, 20 mM Tris, pH 8.0, 1% Triton, 10% glycerol and protease and phosphatase inhibitors (0.5 mM Na3VO4, 10 mM NaF, 1 mM leupeptin, 1 mM pepstatin, 1 mM okadaic acid, and 0.2 mM phenylmethylsulfonyl fluoride), and then syringed five times. An aliquot was used to determine the concentration of protein by BCA protein assay kit (Pierce, Rockford, IL, USA), as recommended by the manufacturer. Samples were then subjected to SDS/PAGE electrophoresis, transferred to PVDF membranes, and probed with the following antibodies: 1:2000 polyclonal anti-NKX2.5, Sigma-Aldrich; 1:4000 monoclonal anti-GAPDH, Millipore; 1:2000 anti-rabbit IgG HRP-linked antibody and 1:4000 anti-mouse IgG HRP-linked antibodies from Cell Signaling. Detection of the proteins was performed using ECL (Thermo Scientific, Rockford, IL, USA).
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