Rationale: A total of 296 proteins were identified in a PSD preparation from forebrain or cerebellum by LC-MS/MS. Among these versican (CSPG2) was identified. As versican is generally described as extracellular matrix components we consider the protein as part of the perisynaptic or synaptic extracellular matrix. 13/10/2017 Pim - Since this data concerns High Throughput Data SynGO does not allow inference to a more specific term.. Experimental description: "PSD fractions were prepared from rat forebrains and cerebellum ...", p. 1159