4.6 Article

Cloning, purification, kinetic and anion inhibition studies of a recombinant β-carbonic anhydrase from the Atlantic salmon parasite platyhelminth Gyrodactylus salaris

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出版社

TAYLOR & FRANCIS LTD
DOI: 10.1080/14756366.2022.2080818

关键词

Carbonic anhydrase; Gyrodactylus salaris; kinetics; anion inhibitors; sulphamic acid

资金

  1. Italian Ministry for Education and Science (MIUR) [2017XYBP2R]
  2. Ente Cassa di Risparmio di Firenze (ECRF) [CRF2020.1395]
  3. Academy of Finland
  4. Jane & Aatos Erkko Foundation
  5. Finnish Cultural Foundation
  6. Tampere Tuberculosis Foundation

向作者/读者索取更多资源

A new beta-class carbonic anhydrase, named GsaCA beta, was cloned from the genome of the Monogenean platyhelminth Gyrodactylus salaris, a parasite of Atlantic salmon. This enzyme showed significant catalytic activity for the physiological reaction CO2 + H2O and was inhibited by various compounds. Since there are few non-toxic agents effective against this parasite, GsaCA beta is proposed as a new drug target.
A beta-class carbonic anhydrase (CA, EC 4.2.1.1) was cloned from the genome of the Monogenean platyhelminth Gyrodactylus salaris, a parasite of Atlantic salmon. The new enzyme, GsaCA beta has a significant catalytic activity for the physiological reaction, CO2 + H2O (sic) HCO3- + H+ with a k(cat) of 1.1 x 10(5) s(-1) and a k(cat)/K-m of 7.58 x 10(6) M-1 x s(-1). This activity was inhibited by acetazolamide (K-I of 0.46 mu M), a sulphonamide in clinical use, as well as by selected inorganic anions and small molecules. Most tested anions inhibited GsaCA beta at millimolar concentrations, but sulfamide (K-I of 81 mu M), N,N-diethyldithiocarbamate (K-I of 67 mu M) and sulphamic acid (K-I of 6.2 mu M) showed a rather efficient inhibitory action. There are currently very few non-toxic agents effective in combating this parasite. GsaCA beta is subsequently proposed as a new drug target for which effective inhibitors can be designed.

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