Glial Cell Line-Derived Neurotrophic Factor, or GDNF, is a neurotrophic factor that is closely related to other neurotrophic factors such as Neurturin, Persephin, and Artemin, by a common structural feature called the cysteine-knot. GDNF signals through a multicomponent system of receptors that includes receptors known as RET, and GFRα1-4 to promote dopamine uptake, survival and differentiation of neurons. Recombinant mouse GDNF is a non-glycosylated homodimer, containing two 135 amino acid chains, with a total molecular weight of 30.2 kDa.
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