Maturation of a central glutamatergic synapse

Gangyi Wu, R. Malinow, H. T. Cline

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Whole-cell recordings from optic tectal neurons in Xenopus tadpoles were used to study the maturation of a glutamatergic synapse. The first glutamatergic transmission is mediated only by N-methyl-D-aspartate (NMDA) receptors and is silent at resting potentials. More mature synapses acquire transmission by α-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid (AMPA) receptors. This maturational program is mimicked by postsynaptic expression of constitutively active calcium-calmodulin-dependent protein kinase II (CaMKII). Newly formed synapses may be silent unless sufficient depolarization is provided by coincident activity that could activate postsynaptic CaMKII, resulting in the appearance of AMPA responses.

Original languageEnglish (US)
Pages (from-to)972-976
Number of pages5
Issue number5289
StatePublished - Nov 8 1996

All Science Journal Classification (ASJC) codes

  • General


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