Structural insight into the pharmacophore pocket of human glutamate carboxypeptidase II

Cyril Bařinka, Miroslava Rovenská, Petra Mlčochová, Klára Hlouchová, Anna Plechanovová, Pavel Majer, Takashi Tsukamoto, Barbara S. Slusher, Jan Konvalinka, Jacek Lubkowski

Research output: Contribution to journalArticle

Abstract

Inhibition of glutamate carboxypeptidase II (GCPII) has been shown to be neuroprotective in multiple preclinical models in which dysregulated glutamatergic transmission is implicated. Herein, we report crystal structures of the human GCPII complexed with three glutamate mimetics/derivatives, 2-(phosphonomethyl)-pentanedioic acid (2-PMPA), quisqualic acid (QA), and L-serine O-sulfate (L-SOS), at 1.72, 1.62, and 2.10 Å resolution, respectively. Despite the structural differences between the distal parts of the inhibitors, all three compounds share similar binding modes in the pharmacophore (i.e., S1′) pocket of GCPII, where they are stabilized by a combination of polar and van der Waals interactions. The structural diversity of the distal parts of the inhibitors leads to rearrangements of the S1′ site that are necessary for efficient interactions between the enzyme and an inhibitor. The set of structures presented here, in conjunction with the available biochemical data, illustrates a flexibility of the GCPII pharmacophore pocket and highlights the structural features required for potent GCPII inhibition. These findings could facilitate the rational structure-based drug design of new GCPII inhibitors in the future.

Original languageEnglish (US)
Pages (from-to)3267-3273
Number of pages7
JournalJournal of medicinal chemistry
Volume50
Issue number14
DOIs
StatePublished - Jul 12 2007
Externally publishedYes

ASJC Scopus subject areas

  • Molecular Medicine
  • Drug Discovery

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  • Cite this

    Bařinka, C., Rovenská, M., Mlčochová, P., Hlouchová, K., Plechanovová, A., Majer, P., Tsukamoto, T., Slusher, B. S., Konvalinka, J., & Lubkowski, J. (2007). Structural insight into the pharmacophore pocket of human glutamate carboxypeptidase II. Journal of medicinal chemistry, 50(14), 3267-3273. https://doi.org/10.1021/jm070133w