Tyrosine aminotransferase from Leishmania infantum: A new drug target candidate

Autor: Miguel Angel Moreno, Ana Alonso, Pedro Jose Alcolea, Ariel Abramov, Mario García de Lacoba, Jan Abendroth, Sunny Zhang, Thomas Edwards, Don Lorimer, Peter John Myler, Vicente Larraga
Jazyk: angličtina
Rok vydání: 2014
Předmět:
Zdroj: International Journal for Parasitology: Drugs and Drug Resistance, Vol 4, Iss 3, Pp 347-354 (2014)
Druh dokumentu: article
ISSN: 2211-3207
DOI: 10.1016/j.ijpddr.2014.06.001
Popis: Leishmania infantum is the etiological agent of zoonotic visceral leishmaniasis in the Mediterranean basin. The disease is fatal without treatment, which has been based on antimonial pentavalents for more than 60 years. Due to resistances, relapses and toxicity to current treatment, the development of new drugs is required. The structure of the L. infantum tyrosine aminotransferase (LiTAT) has been recently solved showing important differences with the mammalian orthologue. The characterization of LiTAT is reported herein. This enzyme is cytoplasmic and is over-expressed in the more infective stages and nitric oxide resistant parasites. Unlike the mammalian TAT, LiTAT is able to use ketomethiobutyrate as co-substrate. The pharmacophore model of LiTAT with this specific co-substrate is described herein. This may allow the identification of new inhibitors present in the databases. All the data obtained support that LiTAT is a good target candidate for the development of new anti-leishmanial drugs.
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