FHOD3 (Formin Homology 2 Domain Containing 3): FHOD3 is a protein in the formin family that plays a crucial role in organizing and regulating the actin cytoskeleton. It is particularly important in cardiac muscle and other tissues, where it supports the assembly of actin filaments that influence cell shape, adhesion, and movement. FHOD3 is essential for processes such as cell division, migration, and muscle contraction, contributing to the function of the cardiovascular and skeletal systems. Its regulatory role involves the dynamic remodeling of the actin cytoskeleton, which is vital for heart development and function.