High-Affinity Zinc Inhibition of NMDA NR1–NR2A Receptors
نویسندگان
چکیده
منابع مشابه
High-affinity zinc inhibition of NMDA NR1-NR2A receptors.
Micromolar concentrations of extracellular Zn2+ are known to antagonize native NMDA receptors via a dual mechanism involving both a voltage-independent and a voltage-dependent inhibition. We have tried to evaluate the relative importance of these two effects and their subunit specificity on recombinant NMDA receptors expressed in HEK 293 cells and Xenopus oocytes. The comparison of NR1a-NR2A an...
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Zinc is vastly present in the mammalian brain and controls functions of various cell surface receptors to regulate neurotransmission. A distinctive characteristic of N-methyl-D-aspartate (NMDA) receptors containing a GluN2A subunit is that their ion channel activity is allosterically inhibited by a nano-molar concentration of zinc that binds to an extracellular domain called an amino-terminal d...
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Zinc inhibits NMDA receptor function through both voltage-dependent and voltage-independent mechanisms. In this report we have investigated the role that the NR1 subunit plays in voltage-independent Zn2+ inhibition. Our data show that inclusion of exon 5 into the NR1 subunit increases the IC50 for voltage-independent Zn2+ inhibition from 3-fold to 10-fold when full length exon 22 is also splice...
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ژورنال
عنوان ژورنال: The Journal of Neuroscience
سال: 1997
ISSN: 0270-6474,1529-2401
DOI: 10.1523/jneurosci.17-15-05711.1997