Identification of a site in glutamate receptor subunits that controls calcium permeability.

Reports on the cloning of a family of genes encoding subunits of the non-N-methyl-D-aspartate (non-NMDA) type of glutamate receptor, and on the identification of a site that regulates the permeation properties of these receptors. Study of structural features controlling ion permeation; Results of mutation of a certain amino acid.