GRIK2 (Glutamate Ionotropic Receptor Kainate Type Subunit 2): GRIK2 is a crucial subunit of kainate receptors, which are glutamate-gated ion channels involved in excitatory neurotransmission within the central nervous system. These receptors play a significant role in synaptic transmission and plasticity, influencing learning, memory, and neural development. GRIK2 is vital for regulating neuronal excitability and has been associated with neurological disorders such as epilepsy, schizophrenia, and neurodegenerative diseases. Its function in modulating synaptic activity positions GRIK2 as a potential target for therapies aimed at conditions involving disrupted glutamatergic signaling.