The following primary antibodies were used: rabbit polyclonal anti-MURC/cavin-4 for immunohistochemical analysis (Code: HPA020973, Sigma-Aldrich, Milan, Italy); goat polyclonal anti-MURC/cavin-4 for immunoblotting analysis (Code: SC-163021, Santa Cruz Biotechnology, Dallas, TX, USA); rabbit polyclonal anti-MURC/cavin-4 for immunofluorescence analysis (as described in [52 (link)]); mouse monoclonal anti-Cav-3 (Code: 610420, BD Transduction Laboratories, Buccinasco, Milan, Italy); rabbit anti-myogenin (Santa Cruz Biotechnology, Dallas, TX, USA, 1:500 dilution); mouse monoclonal anti-MHC (Code: SC-32732, Santa Cruz Biotechnology, Dallas, TX, USA); mouse monoclonal anti-total and—phosphorylated ERK1/2 (extracellular regulated kinase 1/2) (Tyr204) (Code: SC-135900 and SC-7383, Santa Cruz Biotechnology, Dallas, TX, USA); mouse monoclonal anti-GAPDH (glyceraldehyde 3-phosphate dehydrogenase) (Code: MAB374, Millipore, Darmstadt, Germany) and mouse monoclonal anti-alpha-tubulin (Code: T5168, Sigma-Aldrich, Milan, Italy).
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