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Mab369

Manufactured by Abcam

MAB369 is a mouse monoclonal antibody that detects Connexin 43 (Cx43). Cx43 is a gap junction protein that plays a role in cell-to-cell communication. The antibody can be used in various applications, such as Western blotting, immunohistochemistry, and immunocytochemistry, to detect Cx43 expression in different cell types and tissues.

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4 protocols using mab369

1

Proteomic Profiling of Mouse Brain Samples

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Mouse brain samples were extracted using the same method described above for the MS analysis. For each analysis, 5–20 μg of sample was added per lane, separated on 12% Bis-Tris Pre-Cast gels (Thermo Fisher) and transferred to PVDF membranes using 7.5% BSA in TBS for blocking. All primary antibodies were used overnight at 1:1000. Antibodies were used against TH (tyrosine hydroxylase; EMD Millipore, 657012 RRID:AB_696697), DAT (dopamine transporter; EMD Millipore, MAB369 RRID:AB_2190413), Ddc (aromatic-L-amino-acid decarboxylase; Abcam, ab3905 RRID:AB_304145), NSE (neuron specific enolase; Abcam, ab53025 RRID:AB_881756), PKC-β2 (protein kinase C beta-2; Abcam, ab32026 RRID:AB_779042), Akt (protein kinase B; Cell Signaling, 9272 RRID:AB_329827), Lmp7 (proteasome subunit beta type-8; Abcam, ab3329 RRID:AB_303708), and α-synuclein clone D37A6 (Cell Signaling Technology, #4179 RRID:AB_1904156) or clone Syn211 (Sigma-Aldrich Cat# S5566, RRID:AB_261518). Antigen-antibody complexes were detected using an Odyssey LC scanner (LiCor) after incubation with appropriate secondary antibodies. Densitometry was used to quantify intensity of protein bands.
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2

Immunofluorescence Staining and Imaging Protocol

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Cells were fixed with 4% paraformaldehyde for 20 min at 4 °C, permeabilized with 0.125% Triton X-100 in PBS and blocked with True Black (Biotium) according to the manufacturer’s directions and then 10% normal goat serum (NGS) for 1 h. Primary antibodies were applied overnight in 5% NGS at 1:1000. Secondary antibodies were applied for 1–2 h at room temperature, diluted 1:1000 in 5% NGS. Coverslips were then mounted in Fluoromount Aqueous Mounting Medium (Sigma). Antibodies used in this study include rabbit anti-GFP (Clontech, 612460), rat anti-DAT (Millipore MAB369), sheep anti-DBH (abcam ab19353), rabbit anti-RhoA (abcam, ab54835), rabbit anit-NeuN (Abcam, ab177487) and rabbit anti-EAAT3 (α-Diagnostics, EAAC11-A).
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3

Multicolor Immunocytochemistry Protocol

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Cells were fixed with 4% paraformaldehyde for 20 min at 4 °C, permeabilized with 0.125% Triton X-100 in PBS and blocked with True Black (Biotium) according to the manufacturer’s directions and then 10% normal goat serum (NGS) for 1 h. Primary antibodies were applied overnight in 5% NGS at 1:1000. Secondary antibodies were applied for 1–2 h at room temperature, diluted 1:1000 in 5% NGS. Coverslips were then mounted in Fluoromount Aqueous Mounting Medium (Sigma). Antibodies used in this study include rabbit anti-GFP (Clontech, 612460), rat anti-DAT (Millipore MAB369), sheep anti-DBH (abcam ab19353), rabbit anti-RhoA (abcam, ab54835), rabbit anit-NeuN (Abcam, ab177487) and rabbit anti-EAAT3 (α-Diagnostics, EAAC11-A).
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4

Striatal Protein Extraction and Western Analysis

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Protein extraction and Western analysis was performed as previously described (Janezic et al., 2013 (link)). Striatal tissue was homogenized in PBS (pH 7.4) containing 1% Igepal CA-630, 0.1% SDS, 0.5% sodium deoxycholate, and protease inhibitor mixture using a Tissue Tearor (Biospec Products, Inc.). Protein content was quantified using a BCA assay kit (Sigma) and proteins were analyzed by Western blotting under reducing, non-denaturing conditions. Primary antibodies used were: mouse anti-alpha synuclein 1:500 (Abcam ab1903) and rat anti-DAT 1:1,000 (Millipore; mab369) and anti-beta actin (HRP-conjugated) antibody (Abcam ab49900) at 1:50,000. Bands were visualized using horseradish peroxidase-conjugated goat anti-mouse or goat anti-rat IgG (Bio-Rad) and the chemiluminescent ECL+ kit (GE Healthcare) or immobilon ECL (Millipore). Bands were quantified using ImageJ software.
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