Which of the following is not a feature of glutamate signaling systems?

Which of the following is not a feature of glutamate signaling systems?

Which of the following is not a feature of glutamate signaling systems?





  1. The presence of multiple glutamate receptor families with different ionic selectivities
  2. Voltage-dependent gating of certain types of glutamate receptor
  3. The passage of large amounts of magnesium and calcium by NMDA receptors
  4. The use of specialized proteins for loading glutamate into vesicles
  5. The use of specialized proteins for removing glutamate from the synaptic cleft

Answer: 3