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

An assessment of three human methylenetetrahydrofolate dehydrogenase/cyclohydrolase-ligand complexes following further refinement

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Author(s):
Bueno, Renata [1] ; Dawson, Alice [1] ; Hunter, William N. [1]
Total Authors: 3
Affiliation:
[1] Univ Dundee, Coll Life Sci, Div Biol Chem & Drug Discovery, Dundee DD1 5EH - Scotland
Total Affiliations: 1
Document type: Journal article
Source: ACTA CRYSTALLOGRAPHICA SECTION F-STRUCTURAL BIOLOGY COMMUNICATIONS; v. 75, n. 3, p. 148-152, MAR 2019.
Web of Science Citations: 0
Abstract

The enzymes involved in folate metabolism are key drug targets for cell-growth modulation, and accurate crystallographic structures provide templates to be exploited for structure-based ligand design. In this context, three ternary complex structures of human methylenetetrahydrofolate dehydrogenase/cyclohydrolase have been published {[}Schmidt et al. (2000), Biochemistry, 39, 6325-6335] and potentially represent starting points for the development of new antifolate inhibitors. However, an inspection of the models and the deposited data revealed deficiencies and raised questions about the validity of the structures. A number of inconsistencies relating to the publication were also identified. Additional refinement was carried out with the deposited data, seeking to improve the models and to then validate the complex structures or correct the record. In one case, the inclusion of the inhibitor in the structure was supported and alterations to the model allowed details of enzyme-ligand interactions to be described that had not previously been discussed. For one weak inhibitor, the data suggested that the ligand may adopt two poses in the binding site, both with few interactions with the enzyme. In the third case, that of a potent inhibitor, inconsistencies were noted in the assignment of the chemical structure and there was no evidence to support the inclusion of the ligand in the active site. (AU)

FAPESP's process: 16/16038-5 - Exploring compound screening strategies to identify inhibitors of N5, N10: methylenetetrahydrofolate dehydrogenase-cyclohydrolase from Xanthomonas albilineans
Grantee:Renata Vieira Bueno
Support type: Scholarships abroad - Research Internship - Doctorate