GRIK2 (Glutamate Ionotropic Receptor Kainate Type Subunit 2): GRIK2 is a key subunit of kainate receptors, which are glutamate-gated ion channels involved in excitatory neurotransmission in the central nervous system. These receptors play an important role in synaptic transmission and plasticity, impacting learning, memory, and neural development. GRIK2 is essential for regulating neuronal excitability and has been linked to neurological disorders such as epilepsy, schizophrenia, and neurodegenerative diseases. Its role in modulating synaptic activity makes GRIK2 a potential target for therapies addressing conditions with disrupted glutamatergic signaling.