NCIt definition : A protein complex that plays a role in both NMDA binding and ion transport. It is
a heterotetramer consisting of 2 glutamate [NMDA] receptor subunit zeta-1 proteins
and 2 epsilon subunits (glutamate [NMDA] receptor subunit epsilon-1, -2, -3 or -4).;
Alternative definition : CDISC: An antigen of the NMDA receptor that binds to and mediates the neurotransmission
of N-methyl-D-aspartic acid and iron. It can be considered as an autoantigen and is
commonly associated with autoimmune encephalitis.;