Results 71 to 80 of about 3,092,461 (356)

Encapsulation of biocontrol agents in alginate hydrogels: A strategy for enhanced stability and release

open access: yesCarbohydrate Polymer Technologies and Applications
Biocontrol relies on bio-molecules and micro-organisms to protect crops against pests and diseases. However, the instability of these agents in natural conditions (UV exposure, temperature, humidity, soil pH…) remains a major limitation to its widespread
Camille Colin   +6 more
doaj   +1 more source

Molecularly-porous ultrathin membranes for highly selective organic solvent nanofiltration

open access: yesNature Communications, 2020
Engineering thin membranes for molecular separation with well tailored nanoporosity and which can withstand harsh conditions is still a big challenge. Here, the authors introduce a trianglamine macrocycle as a molecular building block for cross-linked ...
Tiefan Huang   +8 more
doaj   +1 more source

The Caenorhabditis elegans DPF‐3 and human DPP4 have tripeptidyl peptidase activity

open access: yesFEBS Letters, EarlyView.
The dipeptidyl peptidase IV (DPPIV) family comprises serine proteases classically defined by their ability to remove dipeptides from the N‐termini of substrates, a feature that gave the family its name. Here, we report the discovery of a previously unrecognized tripeptidyl peptidase activity in DPPIV family members from two different species.
Aditya Trivedi, Rajani Kanth Gudipati
wiley   +1 more source

Mitochondrial precursor proteins are imported through a hydrophilic membrane environment [PDF]

open access: yes, 1987
We have analyzed how translocation intermediates of imported mitochondrial precursor proteins, which span contact sites, interact with the mitochondrial membranes.
Anderson D.   +38 more
core   +1 more source

Biological membranes [PDF]

open access: yesEssays in Biochemistry, 2015
Biological membranes allow life as we know it to exist. They form cells and enable separation between the inside and outside of an organism, controlling by means of their selective permeability which substances enter and leave. By allowing gradients of ions to be created across them, membranes also enable living organisms to generate energy.
openaire   +2 more sources

Molecular bases of circadian magnesium rhythms across eukaryotes

open access: yesFEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

Method for the preparation of thin-skinned asymmetric reverse osmosis membranes and products thereof [PDF]

open access: yes, 1984
A method for preparing water insoluble asymmetric membranes from water soluble polymers is discussed. The process involves casting a film of the polymer, partially drying it, and then contacting it with a concentrated solution of a transition metal salt.
Katz, M. G., Wydeven, T. J.
core   +1 more source

Fluctuating Membranes with Tilt Order [PDF]

open access: yes, 1995
Thermal fluctuations are important for amphiphilic bilayer membranes since typical bending stiffnesses can be a few $k_B T$. The rod-like constituent molecules are generically tilted with respect to the local normal for packing reasons.
Nelson, Philip, Powers, Thomas
core   +6 more sources

Constructing rapid water vapor transport channels within mixed matrix membranes based on two-dimensional mesoporous nanosheets

open access: yesCommunications Chemistry, 2022
Gas dehumidification with permeable membranes is typically a technique low in operating costs and environmental impact, making it preferable over condensation or adsorption methods, but membrane permeability and selectivity remain a trade-off.
Fengkai Wang   +9 more
doaj   +1 more source

Membrane tethering [PDF]

open access: yesF1000Prime Reports, 2014
Membrane trafficking depends on transport vesicles and carriers docking and fusing with the target organelle for the delivery of cargo. Membrane tethers and small guanosine triphosphatases (GTPases) mediate the docking of transport vesicles/carriers to enhance the efficiency of the subsequent SNARE (soluble N-ethylmaleimide-sensitive factor attachment ...
Chia, PZC, Gleeson, PA
openaire   +3 more sources

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