Determining the precise subunit composition of AMPARs in situ has been an enduring challenge. In this issue of Neuron, Lu et al. make significant headway into this pesky problem by using a clever single-cell genetic knockout approach. In a Herculean effort, they provide the field with the completeness of a pie chart outlining the contribution of each AMPAR subunit to basal synaptic transmission...

Mover, a member of the exquisitely small group of vertebrate-specific presynaptic proteins, has been discovered as an interaction partner of the scaffolding protein Bassoon, yet its function has not been elucidated. We used adeno-associated virus (AAV)-mediated shRNA expression to knock down Mover in the calyx of Held in vivo. Although spontaneous synaptic transmission remained unaffected, we f...

Glutamate is the most important excitatory neurotransmitter in the central nervous system which is involved in synaptic transmission, brain development, synaptic plasticity, learning, and memory. Normally, the enzymatic destruction of glutamate does not occur in the synaptic and extracellular space, but glutamate is removed through specific transporter proteins, leading to stabilization of glut...