PLEKHG1 (Pleckstrin Homology and RhoGEF Domain Containing G1): PLEKHG1 is a gene that encodes a protein containing pleckstrin homology and RhoGEF domains. These domains indicate that the protein plays a role in signalling pathways involved in cell morphology, cytoskeletal organisation, and cellular migration. Although its exact functions are still under investigation, PLEKHG1 is thought to contribute to the regulation of cytoskeletal dynamics and cell motility.