Advanced search
Start date
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Structure of Urocanate Hydratase from the protozoan Trypanosoma cruzi

Full text
Boreiko, Sheila [1] ; Silva, Marcio [2] ; Melo, Raissa de F. P. [3] ; Silber, Ariel M. [3] ; Iulek, Jorge [1]
Total Authors: 5
[1] Univ Estadual Ponta Grossa, Dept Chem, BR-84030900 Ponta Grossa, PR - Brazil
[2] Fed Technol Univ Parana, Dept Educ, BR-84016210 Ponta Grossa, PR - Brazil
[3] Univ Sao Paulo, Inst Biomed Sci, Dept Parasitol, Lab Biochem Tryps, LaBTryps, BR-05508000 Sao Paulo, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: International Journal of Biological Macromolecules; v. 146, p. 716-724, MAR 1 2020.
Web of Science Citations: 0

The enzyme Urocanate Hydratase (UH) participates in the catabolic pathway of L-histidine. Trypanosoma cruzi Urocanate Hydratase (TcUH) is identified as a therapeutic molecular target in the WHO/TDR Targets Database. We report the 3D structure determination and number of features of TcUH, and compared it to other few available bacterial UH structures. Each monomer presents two domains and one NAD(+) molecule. Superpositions revealed differences in the relative orientation of domains within monomers, such that TcUH monomer A resembles Urocanate Hydratase from Geobacillus kaustophilus (GkUH) (open conformation), while monomer C resembles Urocanate Hydratase from Pseudomonas putida (PpUH) and Urocanate Hydratase from Bacillus subtilis (BsUH) (closed conformations). We use the structure of TcUH to make considerations about 3 non-deleterious and 2 deleterious mutations found in human UHs: non-deleterious mutations could be accommodated without large displacements or interaction interruptions, whereas deleterious mutations in one case might disrupt an alpha-helix (as previously suggested) and in the other case, besides disrupting the enzyme interaction with the substrate, might interfere with interdomain movement. (C) 2019 Published by Elsevier B.V. (AU)

FAPESP's process: 08/57910-0 - National Institute of Structural Biotechnology and Medicinal Chemistry in Infectious Diseases
Grantee:Richard Charles Garratt
Support type: Research Projects - Thematic Grants
FAPESP's process: 16/06034-2 - The biological role of amino acids and their metabolites in Trypanosoma cruzi
Grantee:Ariel Mariano Silber
Support type: Research Projects - Thematic Grants