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[摘要]：The underlying mechanisms of urocanic acid (UA) to induce immune suppression remain elusive until the recent finding that cis-UA acts via the serotonin, 5-hydroxytryptamine (5-HT) receptor subtype 5-HT2A. In the present study, the interactions of cis-UA to 5-HT2A receptor were explored and compared with those of 5-HT to the same receptor using computational docking. Similar binding modes were observed for cis-UA and 5-HT with 5-HT2A receptor and the former possessed relatively higher binding affinity, which may account for cis-UA being a serotonin receptor agonist. Moreover, the molecular basis for the distinct binding affinities between the trans- and cis-UA with 5-HT2A receptor was also provided. (C) 2009 Elsevier Ltd. All rights reserved. |
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