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CDC42EP1, also known as CDC42 Effector Protein 1, consists of a 40.2 kDa and 39.7 kDa isoform, and is involved in regulatory processes within the cell as a member of the Rho GTPase family. Most commonly found in bone marrow, the CDC42EP1 proteins been shown to help facilitate actin cytoskeleton restructuring and cell shape regulation. The protein is being studied for its involvement in osteonecrosis. The protein has been linked to the RhoA and Rho GTPases pathways where it interacts with MAPKAP1, RPTOR, RHOQ, CDC42, RBPMS, KRTAP4-12, PLSCR1.
