Summary
In rat embryo skeletal myotubes, acetylcholinesterase is present, as multiple forms, and can be detected in deposits at the cell surface. Myotubes cultured in the presence of β-endorphin, exhibit an increased predominance of the globular (precursor) forms of the enzyme, which are largely restricted to intracellular sites associated with nuclei. In the presence of β-endorphin-(1-27), the relative proportions of the different forms of acetylcholinesterase is similar to that seen in the controls, but the enzyme is intracellular and has a characteristic focal localisation in the myotube.
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Haynes, L.W., Smith, M.E. Localisation of acetylcholinesterase in rat myotubes in the presence of β-endorphin and β-endorphin-(1-27). Experientia 46, 211–213 (1990). https://doi.org/10.1007/BF02027318
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DOI: https://doi.org/10.1007/BF02027318