FMN2 (Formin 2): FMN2 is a protein involved in cytoskeletal regulation, particularly in the formation of actin filaments. It plays a key role in cell division, movement, and morphogenesis, supporting the structural integrity and dynamic remodeling of the cytoskeleton. FMN2 is essential during cell division and nervous system development, and mutations in the FMN2 gene have been linked to impaired sperm motility, infertility, and certain developmental disorders.