RAPGEF6 (Rap Guanine Nucleotide Exchange Factor 6): RAPGEF6 is a protein that plays a key role in signal transduction pathways, regulating cell adhesion, migration, and growth. It functions as a guanine nucleotide exchange factor for Rap proteins, controlling their activity in response to extracellular signals. Dysregulation of RAPGEF6 has been linked to cancer progression and metastasis, emphasizing its importance in cellular signaling and the regulation of cell dynamics.