Results 61 to 70 of about 52,461 (230)

Emerging experimental and computational methods for studying redox‐regulated structural transitions

FEBS Letters, EarlyView.
Redox reactions can reshape proteins and alter how they behave in cells, with important consequences for health and disease. This review explores emerging experimental and computational approaches for discovering these redox‐sensitive protein switches, revealing their structural effects, and predicting their behavior, opening new opportunities to ...
Tasneem Rass, Dana Reichmann, Gábor Erdős   +2 more
wiley   +1 more source

Caracterização química e atividade antibacteriana de óleos essenciais de plantas condimentares e medicinais contra Staphylococcus aureus e Escherichia coli

Revista Brasileira de Plantas Medicinais, 2014
Os óleos essenciais são metabólitos secundários dos vegetais com propriedades biológicas diferenciadas, dentre elas, a atividade contra microrganismos, sendo de interesse da indústria de alimentos as concentrações mínimas inibitórias (CMI) desses óleos ...
A.F. Millezi, N.N. Baptista, D.S. Caixeta, D.F. Rossoni, M.G. Cardoso, R.H. Piccoli   +5 more
doaj  

Synergistic perspectives—How single‐molecule biophysics complement biochemical understanding

FEBS Letters, EarlyView.
In this review, we discuss how ensemble biochemistry and single‐molecule approaches are complementary, outline commonly used single‐molecule techniques, and illustrate their relevance through two representative case studies: chromatin organization by SMC complexes and pathway choice during DNA double‐strand break repair.
Sara De Bragança, Eline L. Jansen, Jorine M. Eeftens   +2 more
wiley   +1 more source

Recovery of soil microbiological properties in a degraded area planted with Corymbia citriodora and Leucaena leucocephala Recuperação das propriedades microbiológicas do solo em uma área degradada plantada com Corymbia citriodora e Leucaena leucocephala

Scientia Agricola, 2007
The influence of reforestation was evaluated during two season periods (February and October) in sites planted with Corymbia citriodora and Leucaena_leucocephala through microorganism counts (bacteria, fungi, actinomycetes, and nitrite oxidizers) and ...
Maria Alexandra Reis Valpassos, Kátia Luciene Maltoni, Ana Maria Rodrigues Cassiolato, Ely Nahas   +3 more
doaj   +1 more source

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

FEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell, Thomas Walther, Egbert Hoiczyk   +2 more
wiley   +1 more source

Structural and biochemical analysis of a B12 superbinder

FEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source

Dinâmica fermentativa e microbiológica de silagens dos capins tanzânia e marandu acrescidas de polpa cítrica peletizada Microbiological and fermentative dynamics of tanzaniagrass and marandugrass silage using pelleted citrus pulp as an additive

Revista Brasileira de Zootecnia, 2007
O experimento foi conduzido com o objetivo de avaliar a dinâmica fermentativa e microbiológica de silagens de capins tropicais acrescidas de polpa cítrica. Os capins tanzânia (Panicum maximum cv. Tanzânia) e marandu (Brachiaria brizantha (Hochst ex.
Rogério Marchiori Coan, Ricardo Andrade Reis, Gisela Rojas Garcia, Ruben Pablo Schocken- Iturrino, Daniel de Souza Ferreira, Flávio Dutra de Resende, Felipe do Amaral Gurgel   +6 more
doaj   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

FEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav, Bogdan I. Florea, Sebastian Geibel   +2 more
wiley   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

FEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

ISOLAMENTOS DE BACTÉRIAS E VÍRUS EM PEIXES DE ÁGUAS DO MUNICÍPIO DE SANTA MARIA E ARREDORES

Ciência Rural, 1992
Bactérias e vírus de peixes de águas do município de Santa Maria e arredores foram isolados, sendo comparados com os descritos na literatura como agentes etiológicos das doenças infecto-contagiosas dos peixes.
Terezinha Flores Canabarro, Rudi Weiblen, Deodoro Atlante Brandão, Dolores Spanevello   +3 more
doaj   +1 more source