Activation of the β-carbonic anhydrase from the protozoan pathogen Trichomonas vaginalis with amines and amino acids

Andrea Angeli, Linda J. Urbański, Vesa P. Hytönen, Seppo Parkkila, Claudiu T. Supuran

Research output: Contribution to journalArticleScientificpeer-review

Abstract

We report the first activation study of the β-class carbonic anhydrase (CA, EC 4.2.1.1) encoded in the genome of the protozoan pathogen Trichomonas vaginalis, TvaCA1. Among 24 amino acid and amine activators investigated, derivatives incorporating a second carboxylic moiety, such as L-Asp, L- and D-Glu, were devoid of activating effects up to concentrations of 50 µM within the assay system, whereas the corresponding compounds with a CONH2 moiety, i.e. L-Gln and L-Asn showed modest activating effects, with activation constants in the range of 26.9 − 32.5 µM. Moderate activation was observed with L- and D-DOPA, histamine, dopamine, serotonin, (2-Aminoethyl)pyridine/piperazine and morpholine (KA‘s ranging between 8.3 and 14.5 µM), while the best activators were L-and D-Trp, L-and D-Tyr and 4-amino-Phe, which showed KA‘s ranging between 3.0 and 5.1 µM. Understanding in detail the activation mechanism of β-CAs may be relevant for the design of enzyme activity modulators with potential clinical significance.

Original languageEnglish
Pages (from-to)758-763
Number of pages6
JournalJOURNAL OF ENZYME INHIBITION AND MEDICINAL CHEMISTRY
Volume36
Issue number1
DOIs
Publication statusPublished - Mar 2021
Publication typeA1 Journal article-refereed

Keywords

  • activator
  • Amine
  • amino acid
  • carbonic anhydrase
  • Trichomonas vaginalis

Publication forum classification

  • Publication forum level 1

ASJC Scopus subject areas

  • Pharmacology
  • Drug Discovery

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