STMN3 (Stathmin 3): STMN3 is a protein that regulates microtubule dynamics by destabilizing microtubules. This function is essential for processes such as cell division, intracellular transport, and cell movement. In neurons, STMN3 contributes to axonal growth and synaptic function, and its dysregulation may be associated with neurodevelopmental and neurodegenerative disorders.