SHANK with its ankyrin repeats has been found to bind SHARPIN a molecule that can form homomers. SHARPIN is another PSD protein enriched at synaptic sites in mature neurons and may be involved in the formation and maintenance of excitatory synaptic structures (Lim et al. 2001).
Lim, S, Sala, C, Yoon, J, Park, S, Kuroda, S, Sheng, M, Kim, E
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