Regulates microtubule dynamics in Sertoli cells, a process that is essential for spermiogenesis and male fertility. Severs microtubules in an ATP-dependent manner, promoting rapid reorganization of cellular microtubule arrays (By similarity). Has microtubule-severing activity in vitro (By similarity). {ECO:0000250|UniProtKB:Q8K0T4, ECO:0000250|UniProtKB:Q9BW62}.