PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 1702227-6 1990 Furthermore, spermine increases the maximum response to NMDA and glycine and acts, at least in part, by increasing the apparent affinity of the NMDA receptor/channel complex for glycine. N-Methylaspartate 56-60 glutamate ionotropic receptor NMDA type subunit 1 L homeolog Xenopus laevis 144-157