Metalloenzymes are attractive research targets in fields of chemistry, biology, and medicine. Given that metalloenzymes can manifest conservation of metal-coordination and ligand binding modes, the excavation and expansion of metalloenzyme-specific knowledge is of interest in bridging metalloenzyme-related fields. Building on our previous metalloenzyme-ligand association database, MeLAD, we have expanded the scope of metalloenzyme-specific knowledge and services, by forming a versatile platform, termed the Metalloenzyme Data Bank and Analysis (MeDBA). The MeDBA provides: (i) manual curation of metalloenzymes into different categories, that this M-I, M-II and M-III; (ii) comprehensive information on metalloenzyme activities, expression profiles, family and disease links; (iii) structural information on metalloenzymes, in particular metal binding modes; (iv) metalloenzyme substrates and bioactive molecules acting on metalloenzymes; (v) excavated metal-binding pharmacophores and (vi) analysis tools for structure/metal active site comparison and metalloenzyme profiling. The MeDBA is freely available at https://medba.ddtmlab.org.
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http://dx.doi.org/10.1093/nar/gkac860 | DOI Listing |
J Fungi (Basel)
November 2024
Department of Molecular Biotechnology and Microbiology, Institute of Biotechnology, Faculty of Science and Technology, University of Debrecen, H-4032 Debrecen, Hungary.
Heliyon
December 2024
Department of Clinical Laboratory Medicine, Wenzhou Central Hospital, Dingli Clinical School of Wenzhou Medical University, Wenzhou, 325000, China.
Background: The relationship between tumour necrosis factor (TNF) levels and disease progression is well-established. However, the impact of changes in the level of TNF hydrolase (A-disintegrin and metalloenzyme 17; ADAM17) in HIV patients remains to be fully elucidated.
Methods: Between March 1 and December 31, 2017, data were collected from 64 HIV-positive individuals in Wenzhou.
Angew Chem Int Ed Engl
December 2024
ETH Zurich: Eidgenossische Technische Hochschule Zurich, Institute of Microbiology, Vladimir-Prelog-Weg 1-5/10, HCI G433, 8008, Zürich, SWITZERLAND.
Radical S-adenosyl methionine enzymes catalyze a diverse repertoire of post-translational modifications in protein and peptide substrates. Among these, an exceptional and mechanistically obscure example is the installation of α-keto-β-amino acid residues by formal excision of a tyrosine-derived tyramine unit. The responsible spliceases are key maturases in a widespread family of natural products termed spliceotides that comprise potent protease inhibitors, with the installed β-residues being crucial for bioactivity.
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January 2025
Department of Chemistry, Purdue University, West Lafayette, Indiana 47906, USA.
Peroxynitrite (ONOO) is a highly reactive nitrogen species that can cause significant damage to proteins, lipids, and DNA. Various enzymes, including metalloenzymes, play crucial roles in reducing ONOO concentrations to protect cellular components. While the interaction of ONOO with heme proteins is well known, the reduction by Cu-containing proteins is less studied.
View Article and Find Full Text PDFChemTexts
November 2024
Institut für Biophysikalische Chemie, Fakultät für Chemie, Universität Wien, Josef-Holaubek-Platz 2, 1090 Vienna, Austria.
Tyrosinases (TYRs) are a family of copper-containing metalloenzymes that are present in all domains of life. TYRs catalyze the reactions that start the biosynthesis of melanin, the main pigment of the animal kingdom, and are also involved in the formation of the bright colors seen on the caps of mushrooms and in the petals of flowers. TYRs catalyze the -hydroxylation and oxidation of phenols and the oxidation of catechols to the respective -quinones.
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