The androgen receptor polyglutamine tract sets the transcriptional balance between muscle growth and atrophy
The androgen receptor (AR) mediates the potent anabolic effects of testosterone and other androgens on skeletal muscle, yet the transcriptional mechanisms coupling this hormonal signal to muscle growth remain unresolved. AR is a ligand-inducible transcription factor whose N-terminal transactivation domain (NTD) harbours a polymorphic polyglutamine (polyQ) tract that, when pathologically expanded,…
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