Laccase belongs to the family of blue multi-copper oxidases and are capable of oxidizing a wide range of aromatic compounds. Laccases have industrial applications in paper pulping or bleaching and hydrocarbon bioremediation as a biocatalyst. We describe the design of a laccase with broader substrate spectrum in bioremediation. The application of evolutionary trace (ET) analysis of laccase at the ligand binding site for optimal design of the enzyme is described. In this attempt, class specific sites from ET analysis were mapped onto known crystal structure of laccase. The analysis revealed 162PHE as a critical residue in structure function relationship studies.
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http://dx.doi.org/10.6026/97320630002369 | DOI Listing |
Chemosphere
January 2025
ING PAN - Institute of Geological Sciences, Polish Academy of Sciences, Research Centre in Kraków, Senacka 1 Str., PL31002 Kraków, Poland.
Biosorption is nowadays recommended as an ecological and environmentally friendly alternative to remove metals from contaminated regions. Even in situ incubations of algae on the seabed are conducted to investigate potential future ways of reducing metal contamination. Our study investigated the negative effects on microorganisms when metal-enriched algae are released into the marine environment.
View Article and Find Full Text PDFBMC Ecol Evol
January 2025
Institute for Evolution and Biodiversity, University of Münster, Münster, 48159, Germany.
Background: Protein evolution is central to molecular adaptation and largely characterized by modular rearrangements of domains, the evolutionary and structural building blocks of proteins. Genetic events underlying protein rearrangements are relatively rare compared to changes of amino-acids. Therefore, these events can be used to characterize and reconstruct major events of molecular adaptation by comparing large data sets of proteomes.
View Article and Find Full Text PDFAIDS Res Hum Retroviruses
January 2025
Yunnan Provincial Key Laboratory of Public Health and Biosafety & Institute for AIDS/STD Control and Prevention, Yunnan Center for Disease Control and Prevention, Kunming, China.
In this study, by analyzing the available near full-length genome (NFLG) sequences of CRF55_01B, it was found that two of the NFLG sequences could not be clustered with other NFLG sequences. Recombination analysis and phylogenetic analysis suggested that these two NFLG sequences arose by recombination with subtype B based on CRF55_01B, rather than by recombination directly derived from CRF01_AE and subtype B. In addition, two other HIV-1 partial gene fragments found in the database shared the same characteristics as these two NFLG sequences in the key recombination region.
View Article and Find Full Text PDFViruses
November 2024
Department of Public Health, Ministry of Health, P.O. Box 24923, Kuwait City 13110, Kuwait.
Continuous surveillance is critical for early intervention against emerging novel SARS-CoV-2 variants. Therefore, we investigated and compared the variant-specific evolutionary epidemiology of all the Delta and Omicron sequences collected between 2021 and 2023 in Kuwait. We used Bayesian phylodynamic models to reconstruct, trace, and compare the two variants' demographics, phylogeographic, and host characteristics in shaping their evolutionary epidemiology.
View Article and Find Full Text PDFPathogens
December 2024
Microbiology and Virology Department, Fondazione IRCCS Policlinico San Matteo, 27100 Pavia, Italy.
The dengue virus (DENV) is a mosquito-borne flavivirus endemic to many tropical and subtropical regions. Over the past few decades, the global incidence of dengue has risen dramatically, with the virus now present in over 100 countries, putting nearly half of the world's population at risk. This increase is attributed to several factors, including urbanization, climate change, and global travel, which facilitate the spread of both the virus and its mosquito vectors.
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