Results 71 to 80 of about 17,601 (278)

Who are we as historical beings? Shaping identities in light of the archaeogenetics ‘revolution’

open access: yesCurrent Swedish Archaeology, 2019
There is a human fundamental need to know who we are and where we come from. In an age when myths, legends and family memories are starting to fade or become obsolete, science is brought in to fill the gaps and answer these questions.
Alexandra Ion
doaj   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

open access: yesFEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source

Some Comments on Reductionism [PDF]

open access: yes, 1998
In the article three types of reductionism are discussed: i) ontological reductionism (what happens on the «higher» level is causally determined by what happens on the «lower» level; ii) epistemological (the knowledge about the world can in principle be ...
Kałuszyńska, Elżbieta
core  

Darwin and Reductionisms: Victorian, Neo-Darwinian and Postgenomic Biologies

open access: yes19, 2010
This article compares the open-ended Darwinism of Charles Darwin, George Lewes, George Eliot and Thomas Hardy with reductive post-Weismann and early eugenist views and more recent neo-Darwinian ideas including literary Darwinism.
Angelique Richardson
doaj   +2 more sources

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

open access: yesFEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee   +7 more
wiley   +1 more source

Design and analysis strategies for robust microbiome ageing research

open access: yesFEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik   +5 more
wiley   +1 more source

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

Identification of a Shiga toxin A‐derived peptide internalized into Gb3 receptor‐bearing cells via interaction with the Shiga toxin B subunit

open access: yesFEBS Letters, EarlyView.
The process of internalization of the Shiga toxin A subunit via formation of a complex with the Shiga toxin B subunit, which specifically binds to the Gb3 receptor. The peptide is designed to act as a carrier of drugs into cancer cells. Here, we explored the potential of peptides derived from the catalytic A subunit of Shiga toxin (STxA) to be drug ...
Giulia Opassi   +6 more
wiley   +1 more source

Física e biologia: possíveis limites de demarcação conceitual Possible limits of conceptual demarcation

open access: yesTrans/Form/Ação, 2006
A partir do texto do físico alemão E.Schroedinger, O que é vida? (1943), analisam-se os possíveis limites de demarcação conceitual entre física e biologia. Há um limite possível entre física e biologia? Ou a biologia pode ser reduzida à física?
Arthur Araújo
doaj   +1 more source

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