pfam10581: Synapsin_N (This model is not part of the current CDD release)
Synapsin N-terminal
This highly conserved domain of synapsin proteins has a serine at position 9 or 10 which is a phosphorylation site. The domain appears to be the part of the molecule that binds to calmodulin.
Jiyao W et al.(2023). "The conserved domain database in 2023.",