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 the protein is involved in signaling pathways that regulate cell shape, cytoskeletal organization, and cell migration. Although its exact functions are still being researched, PLEKHG1 is thought to play a role in controlling cytoskeletal dynamics and cell movement.