Results 41 to 50 of about 1,355,379 (265)

A review on biosynthesis of silver nanoparticles and their biocidal properties

open access: yesJournal of Nanobiotechnology, 2018
Use of silver and silver salts is as old as human civilization but the fabrication of silver nanoparticles (Ag NPs) has only recently been recognized.
K. S. Siddiqi, A. Husen, R. Rao
semanticscholar   +1 more source

A new type of DNA phosphorothioation-based antiviral system in archaea

open access: yesNature Communications, 2019
The prokaryote defence system Dnd relies on phosphorothioation (PT) of DNA backbone to distinguish between self and non-self DNA. Here, Xiong et al. describe a previously uncharacterized PT-based antiviral system that is independent of the canonical Dnd ...
Lei Xiong   +12 more
doaj   +1 more source

The pea branching RMS2 gene encodes the PsAFB4/5 auxin receptor and is involved in an auxin-strigolactone regulation loop [PDF]

open access: yes, 2017
Strigolactones (SLs) are well known for their role in repressing shoot branching. In pea, increased transcript levels of SL biosynthesis genes are observed in stems of highly branched SL deficient (ramosus1 (rms1) and rms5) and SL response (rms3 and rms4)
Aubert, Gregoire   +13 more
core   +3 more sources

Efficient biosynthesis of nucleoside cytokinin angustmycin A containing an unusual sugar system

open access: yesNature Communications, 2021
Angustmycin A is a nucleoside antibiotic having anti-mycobacterial and cytokinin activities. Here, the authors report the whole pathway leading to angustmycin A biosynthesis in Streptomyces and achieve the heterologous production of angustmycin A in E ...
Le Yu   +8 more
doaj   +1 more source

Molecular responses of mouse macrophages to copper and copper oxide nanoparticles inferred from proteomic analyses [PDF]

open access: yesMol Cell Proteomics 12, 11 (2013) 3108-22, 2013
The molecular responses of macrophages to copper-based nanoparticles have been investigated via a combination of proteomic and biochemical approaches, using the RAW264.7 cell line as a model. Both metallic copper and copper oxide nanoparticles have been tested, with copper ion and zirconium oxide nanoparticles used as controls.
arxiv   +1 more source

A two-component flavin-dependent monooxygenase involved in actinorhodin biosynthesis in Streptomyces coelicolor [PDF]

open access: yesThe journal of biological chemistry, American Society for Biochemistry and Molecular Biology, 2004, 279, pp.44362-9, 2015
The two-component flavin-dependent monooxygenases belong to an emerging class of enzymes involved in oxidation reactions in a number of metabolic and biosynthetic pathways in microorganisms. One component is a NAD(P)H:flavin oxidoreductase, which provides a reduced flavin to the second component, the proper monooxygenase.
arxiv   +1 more source

The bHLH transcription factors TSAR1 and TSAR2 regulate triterpene saponin biosynthesis in Medicago truncatula [PDF]

open access: yes, 2015
Plants respond to stresses by producing a broad spectrum of bioactive specialized metabolites. Hormonal elicitors, such as jasmonates, trigger a complex signaling circuit leading to the concerted activation of specific metabolic pathways.
Goossens, Alain   +5 more
core   +2 more sources

Natural Products from Mangrove Actinomycetes

open access: yesMarine Drugs, 2014
Mangroves are woody plants located in tropical and subtropical intertidal coastal regions. The mangrove ecosystem is becoming a hot spot for natural product discovery and bioactivity survey.
Dong-Bo Xu   +4 more
doaj   +1 more source

Diversity and biosynthetic potential of culturable microbes associated with toxic marine animals [PDF]

open access: yes, 2013
Tetrodotoxin (TTX) is a neurotoxin that has been reported from taxonomically diverse organisms across 14 different phyla. The biogenic origin of tetrodotoxin is still disputed, however, TTX biosynthesis by host-associated bacteria has been reported.
Chau, Rocky   +3 more
core   +4 more sources

Biosynthesis of medicinal tropane alkaloids in yeast

open access: yesNature, 2020
Tropane alkaloids from nightshade plants are neurotransmitter inhibitors that are used for treating neuromuscular disorders and are classified as essential medicines by the World Health Organization 1 , 2 .
P. Srinivasan, C. Smolke
semanticscholar   +1 more source

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