SORCS3 (Sortilin-Related VPS10 Domain Containing Receptor 3) is a protein that is part of the VPS10 domain-containing receptor family, which is involved in protein trafficking and sorting within cells. It plays a crucial role in the nervous system by regulating the transport of proteins essential for synaptic function. Alterations in SORCS3 activity have been linked to neurological disorders such as Alzheimer's disease and schizophrenia.