Ras-related protein Ral (Ral GTPase (RalA, RalB))

Ras-related protein Ral (Ral GTPase) belongs to the Ras superfamily of small GTPases and functions as a molecular switch, cycling between active GTP-bound and inactive GDP-bound states. It is activated by RalGEFs and inactivated by GTPase-activating proteins (RalGAPs). RalA and RalB regulate signal transduction pathways, cell division, cytoskeletal dynamics, vesicular transport, and cell migration. Ral GTPases are implicated in the pathogenesis of various cancers and are actively researched as potential therapeutic targets due to their role in tumor initiation, progression, and cancer stem cell function. Notably, they mediate EGFR/MAPK signaling, impact cellular shape through the JNK pathway, and orchestrate biological processes essential for tissue homeostasis and regeneration. While direct drug targeting is still under development, their activity serves as a biomarker and mechanistic focus in cancer research.

Other names

RalARalBRas-related protein Ral-ARas-related protein Ral-BDRal (Drosophila homolog)

Inhibiting Ral activation or disrupting its binding to downstream effectors (e.g., by modulating guanine nucleotide exchange factors or GTPase-activating proteins). Inhibiting Ral-GTP-dependent signaling can reduce tumor cell growth, migration, and invasion.