Results 61 to 70 of about 231,421 (295)

Structural and mechanistic basis for the regulation of the chloroplast signal recognition particle by (p)ppGpp

open access: yesFEBS Letters, EarlyView.
LHCPs are transported to the thylakoid membrane via the (cp)SRP pathway. This process involves a transit complex of (cp)SRP43, (cp)SRP54 and LHCP, which interacts with (cp)FtsY and Alb3 at the membrane. GTP hydrolysis by (cp)SRP54 and (cp)FtsY triggers complex dissociation.
Victor Zegarra   +7 more
wiley   +1 more source

The relevance of non-formal Biology Olympiad training for upper secondary school students

open access: yesLUMAT, 2018
Science competitions, such as the International Biology Olympiad, are non-formal education targeted to upper secondary school students with high abilities.
Justus Mutanen, Maija Aksela
doaj   +1 more source

Origin of life from a maker's perspective -- focus on protocellular compartments in bottom-up synthetic biology [PDF]

open access: yesarXiv, 2022
The origin of life is shrouded in mystery, with few surviving clues, obscured by evolutionary competition. Previous reviews have touched on the complementary approaches of top-down and bottom-up synthetic biology to augment our understanding of living systems.
arxiv  

Speciation as Pattern Formation by Competition in a Smooth Fitness Landscape [PDF]

open access: yesPhys. Rev. Lett. 79, 3302 (1997), 1997
We investigate the problem of speciation and coexistence in simple ecosystems when the competition among individuals is included in the Eigen model for quasi-species. By suggesting an analogy between the competition among strains and the diffusion of a chemical inhibitor in a reaction-diffusion system, the speciation phenomenon is considered the ...
arxiv   +1 more source

Taurine promotes glucagon‐like peptide‐1 secretion in enteroendocrine L cells

open access: yesFEBS Letters, EarlyView.
Taurine, a sulfur‐containing amino acid, is likely taken up by enteroendocrine L cells via the taurine transporter. This process increases the levels of cytosolic ATP. The increase in intracellular Ca2+ concentrations and glucagon‐like peptide‐1 secretion through membrane depolarization is caused by the closure of ATP‐sensitive potassium channels ...
Yuri Osuga   +6 more
wiley   +1 more source

Competition between Silicifiers and Non-silicifiers in the Past and Present Ocean and Its Evolutionary Impacts

open access: yesFrontiers in Marine Science, 2018
Competition is a central part of the evolutionary process, and silicification is no exception: between biomineralized and non-biomineralized organisms, between siliceous and non-siliceous biomineralizing organisms, and between different silicifying ...
Katharine R. Hendry   +8 more
doaj   +1 more source

Shared Transcriptional Machinery at Homologous Alleles Leads to Reduced Transcription in Early Drosophila Embryos

open access: yesFrontiers in Cell and Developmental Biology, 2022
The mechanism by which transcriptional machinery is recruited to enhancers and promoters to regulate gene expression is one of the most challenging and extensively studied questions in modern biology.
Hao Deng, Bomyi Lim
doaj   +1 more source

Effects of Noise in Symmetric Two-Species Competition [PDF]

open access: yes, 1998
We have analyzed the interplay between noise and periodic modulations in a classical Lotka-Volterra model of two-species competition. We have found that the consideration of noise changes drastically the behavior of the system and leads to new situations which have no counterpart in the deterministic case.
arxiv   +1 more source

The multiple roles of the NlpC_P60 peptidase family in mycobacteria – an underexplored target for antimicrobial drug discovery

open access: yesFEBS Letters, EarlyView.
The NlpC_P60 superfamily of peptidases is recognised by its key role in bacterial cell wall homeostasis. Recently, studies have also described the involvement of NlpC_P60‐like enzymes in bacterial competitive mechanisms and pathogenesis across several lineages.
Catharina dos Santos Silva   +1 more
wiley   +1 more source

Responsible and safe innovation in education: an iGEM showcase

open access: yesJournal of Responsible Innovation
This paper showcases a project involved in the international Genetically Engineered Machines (iGEM) competition – a competition dedicated to the advancement of synthetic biology – executed at Delft University of Technology, the Netherlands.
Britte Bouchaut, Lotte Asveld
doaj   +1 more source

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