How is synapsin described as an evolutionarily conserved presynaptic phosphoprotein?
['["Synapsin is an evolutionarily conserved presynaptic phosphoprotein.", "Synapsins as a family of presynaptic terminal phosphoprotein participates in neuronal development", "Synapsin III (SynIII) is a phosphoprotein", "The neuronal phosphoprotein synapsin III", "Synapsin II is a member of the neuronal phosphoprotein family.", "phosphoprotein synapsin"]']
Synapsin is described as an evolutionarily conserved presynaptic phosphoprotein in the context.
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