Endotoxin level is <0.1 ng/ug of protein (<1 EU/ug).
Human Persephin induces RET phosphorylation using a concentration range of 0.1-1.0 ng/mL. Human Persephin binds to mammalian GFRa4 with the Kd of 100pM. Other members of the GDNF family (Artemin, GDNF and Neurturin) do not bind to mammalian GFRa4.
Activity assay SDS-PAGE The optimal working dilution should be determined by the end user.
Lyophilized from 0.3x PBS, pH 7.2.
Store at -20°C. Reconstitute in 5 mM Sodium Phosphate, pH 7.5 to a concentration of <= 0.5 mg/mL. Do not vortex. For extended storage, it is recommended to further dilute in a buffer containing a carrier protein (example 0.1% BSA) and store in working aliquots at -20°C to -80°C.
The protein encoded by this gene is a neurotrophic factor, belonging to the GDNF family. Neurotrophic factors are important for the proper development and maintenance of the nervous system. These factors promote neuronal survival and can prevent the neuronal degeneration associated with injury, toxin exposure, or neurodegenerative disease. The encoded protein has amino acid similarity to its other family members, glial cell line-derived neurotrophic factor and neurturin. This gene product promotes the survival of ventral midbrain dopaminergic neurons in culture and prevents their degeneration after 6-hydroxydopamine treatment in vivo. [provided by RefSeq