Nuclear type I myosins actively support nucleolar and nuclear structure and function.

Nuclear type I myosins are essential for maintaining nuclear and nucleolar structure and function, with depletion causing genome disorganization and nucleolar disruption.

• Why it matters: Understanding the molecular mechanisms that support nuclear organization is limited, yet crucial for insights into cell division and genome regulation.
• What they did: The study used depletion experiments to investigate nuclear myosins, revealing that type I myosins are necessary for nuclear integrity, affecting gene expression, nucleolar activity, and nuclear morphology.
• The result: Depletion of nuclear type I myosin leads to genome disorganization, nucleolar disruption, and altered mobility of nucleolar proteins, highlighting its critical role in nuclear and nucleolar dynamics.