Comparison of the amine/amino acid activation profiles of the β- and γ-carbonic anhydrases from the pathogenic bacterium Burkholderia pseudomallei.
The β-class carbonic anhydrase (CA, EC 4.2.1.1) from the pathogenic bacterium Burkholderia pseudomallei, BpsCAβ, that is responsible for the tropical disease melioidosis was investigated for its activation with natural and non-natural amino acids and amines. Previously, the γ-CA from this bacterium has been investigated with the same library of 19 amines/amino acids, which show very potent activating effects on both enzymes. The most effective BpsCAβ activators were L- and D-DOPA, L- and D-Trp, L-Tyr, 4-amino-L-Phe, histamine, dopamine, serotonin, 2-pyridyl-methylamine, 1-(2-aminoethyl)-piperazine and L-adrenaline with KAs of 0.9-27 nM. Less effective activators were D-His, L- and D-Phe, D-Tyr, 2-(2-aminoethyl)pyridine and 4-(2-aminoethyl)-morpholine with KAs of 73 nM-3.42 µM. The activation of CAs from bacteria, such as BpsCAγ/β, has not been considered previously for possible biomedical applications. It would be of interest to perform studies in which bacteria are cultivated in the presence of CA activators, which may contribute to understanding processes connected with the virulence and colonization of the host by pathogenic bacteria.
['Vullo|Daniela|D|', 'Del Prete|Sonia|S|', 'Osman|Sameh M|SM|', 'Alasmary|Fatmah A S|FAS|', 'AlOthman|Zeid|Z|', 'Donald|William A|WA|', 'Capasso|Clemente|C|', 'Supuran|Claudiu T|CT|']
D000588:Amines D000596:Amino Acids D016957:Burkholderia pseudomallei D002256:Carbonic Anhydrases D015394:Molecular Structure
activators pathogens Burkholderia pseudomallei Carbonic anhydrase metalloenzymes