Results 81 to 90 of about 177,861 (299)

The Temperature Dependence of Predation Stress and Prey Nutritional Stoichiometry

open access: yesFrontiers in Ecology and Evolution, 2017
Prey at risk of predation may experience stress and respond physiologically by altering their metabolic rates. Theory predicts that such physiological changes should alter prey nutrient demands from N-rich to C-rich macronutrients and shift the balance ...
Oswald J. Schmitz, Adam E. Rosenblatt
doaj   +1 more source

Stoichiometry of Photosynthetic Phosphorylation

open access: yesJournal of Biological Chemistry, 1968
Abstract The P/2e- ratio of noncyclic photophosphorylation was investigated in the light of recent reports that it is greater than one and may reflect the existence of two types of electron transport, a phosphorylating and a nonphosphorylating type, superimposed on each other.
F F, Del Campo   +2 more
openaire   +2 more sources

Heterotropic regulation and negative homotropic cooperativity

open access: yesFEBS Open Bio, EarlyView.
We identified a structural module common to some proteins that couple negative cooperativity with heterotropic regulation, two features that rarely coexist. These proteins are ring‐like and present an ordered asymmetry whereby noncontacting subunits are symmetric, and their tertiary structure differs from that of contacting subunits.
Veronica Morea   +5 more
wiley   +1 more source

The evolution of per-cell organelle number

open access: yesFrontiers in Cell and Developmental Biology, 2016
Organelles with their own distinct genomes, such as plastids and mitochondria, are found in most eukaryotic cells. As these organelles and their host cells have evolved, the partitioning of metabolic processes and the encoding of interacting gene ...
Logan W. Cole
doaj   +1 more source

The C‐terminal truncated splicing variant of NK1R negatively modulates substance P‐stimulated NK1R signaling

open access: yesFEBS Open Bio, EarlyView.
The neurokinin 1 receptor exists as full‐length (NK1L) and C‐terminally truncated (NK1S) splice variants. We show that NK1S heterodimerizes with NK1L, impairing Gαq coupling and Ca2+ mobilization while enhancing β‐arrestin1 recruitment. NK1S suppresses substance P‐driven gene expression and cell migration, revealing NK1S as an endogenous biased ...
Lan Phuong Nguyen   +8 more
wiley   +1 more source

Use of GC-IMS and Stoichiometry to Characterize Flavor Volatiles in Different Parts of Lueyang Black Chicken during Slaughtering and Cutting

open access: yesFoods
Chilled and cut chicken is preferred by consumers for its safeness and readiness to cook. To evaluate the quality characteristics of various chilled chicken products, differences in volatile organic components (VOCs) of six different cut parts (breast ...
Linlin He   +5 more
doaj   +1 more source

The Stoichiometry of Ribosomal Translocation

open access: yesJournal of Biological Chemistry, 1973
Abstract Fusidic acid does not inhibit the translocation of N-acetylphenylalanyl-tRNA (N-acetyl-Phe-tRNA), bound nonenzymically to the ribosomal A-site, when the amount of ribosomes in the reaction mixture is not sufficient to trap all the available elongation factor G (EF-G) in the form of GDP ·EF-G ·fusidic acid ·ribosome complexes.
J, Modolell, B, Cabrer, D, Vázquez
openaire   +2 more sources

The multi-element stoichiometry of wet eucalypt forest is transformed by recent, frequent fire

open access: yes, 2020
Background and aims: Fires can alter the elemental stoichiometry of ecosystems, reflecting altered patterns of biogeochemical cycling in the post-fire environment. However, elements other than carbon (C), nitrogen (N), and phosphorus (P) have rarely been
Butler, Orpheus M   +5 more
core   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

Pulsed laser deposition OF III-V semiconductor thin films: review

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов
This review highlights the latest advancements in pulsed laser deposition of III-V semiconductor thin films on various substrates. The pulsed laser deposition method is shown to be highly effective and distinct from other thin film deposition techniques ...
O.V. Devitsky
doaj   +1 more source

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