Structural basis for recognition of diverse antidepressants by the human serotonin transporter

Structural basis for recognition of diverse antidepressants by the human serotonin transporter Selective serotonin reuptake inhibitors are clinically prescribed antidepressants that act by increasing the local concentrations of neurotransmitters at synapses and in extracellular spaces via blockade of the serotonin transporter. Here we report X-ray structures of engineered thermostable variants of the human serotonin transporter bound to the antidepressants sertraline, fluvoxamine, and paroxetine. The drugs prevent serotonin binding by occupying the central substrate-binding site and stabilizing the transporter in an outward-open conformation. These structures explain how residues within the central site orchestrate binding of chemically diverse inhibitors and mediate transporter drug selectivity. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nature Structural & Molecular Biology Springer Journals

Structural basis for recognition of diverse antidepressants by the human serotonin transporter

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Publisher
Springer Journals
Copyright
Copyright © 2018 by The Author(s)
Subject
Life Sciences; Life Sciences, general; Biochemistry, general; Protein Structure; Membrane Biology; Biological Microscopy
ISSN
1545-9993
eISSN
1545-9985
D.O.I.
10.1038/s41594-018-0026-8
Publisher site
See Article on Publisher Site

Abstract

Selective serotonin reuptake inhibitors are clinically prescribed antidepressants that act by increasing the local concentrations of neurotransmitters at synapses and in extracellular spaces via blockade of the serotonin transporter. Here we report X-ray structures of engineered thermostable variants of the human serotonin transporter bound to the antidepressants sertraline, fluvoxamine, and paroxetine. The drugs prevent serotonin binding by occupying the central substrate-binding site and stabilizing the transporter in an outward-open conformation. These structures explain how residues within the central site orchestrate binding of chemically diverse inhibitors and mediate transporter drug selectivity.

Journal

Nature Structural & Molecular BiologySpringer Journals

Published: Jan 29, 2018

References

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