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The Dnmt1 enzyme is a member of the C5-methyltransferase family responsible for repairing cytosines in double-stranded DNA (dsDNA). This enzyme uses a nucleophilic attack mechanism and is the most abundantly found mammalian DNA methyltransferase. It primarily acts upon CpG residues and prefers hemimethylated residues, but can also methylating unmethylated DNA. The cell relies upon Dnmt1...

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The D4-GDI protein is a negative regulator of the Ras-related Rho family of small molecule "molecular switch" GTPases. The Rho GTPases modify cell structure and architecture via rapid changes to the actin cytoskeleton and cell membrane. Many of these physiological processes are associated with apoptotic cell death, thus the in vivo removal of D4-GDI inhibitory block is critical...

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