Updated project metadata. The high molecular complexity of the SHANK scaffold and its fundamental role in neural circuitries governing social behavior is not well understood. Here we analyzed two newly generated transgenic mouse lines with the SHANK2A wild-type isoform and the other with SHANK2A carrying a SHANK2A(R841X) point mutation. The proteome of hippocampal synapse-enriched fraction for both lines was investigated by quantitative SWATH proteomic analysis in order to identify synaptic proteins and signaling pathways that respond to the SHANK2 isoforms.