Results 71 to 80 of about 2,399,625 (308)

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

open access: yesFEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva   +5 more
wiley   +1 more source

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

Interactions between proteins bound to biomembranes

open access: yes, 2003
We study a physical model for the interaction between general inclusions bound to fluid membranes that possess finite tension, as well as the usual bending rigidity. We are motivated by an interest in proteins bound to cell membranes that apply forces to
A. Albersdorfer   +39 more
core   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

Mutual Mobile Membranes with Timers

open access: yes, 2009
A feature of current membrane systems is the fact that objects and membranes are persistent. However, this is not true in the real world. In fact, cells and intracellular proteins have a well-defined lifetime.
Bogdan Aman   +4 more
core   +2 more sources

Characterization of hemodialysis membranes by inverse size exclusion chromatography [PDF]

open access: yes, 1995
Inverse size exclusion chromatography (i-SEC) was used to characterize three different cellulosic hollow fiber hemodialysis membranes, i.e. low-flux cuprophan and hemophan and high-flux RC-HP400A.
Bargeman, Derk   +5 more
core   +3 more sources

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

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

open access: yesFEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva   +10 more
wiley   +1 more source

Fusion of isolated myoblast plasma membranes [PDF]

open access: yes, 1978
Fusion of plasma membranes isolated from myoblasts grown in culture has been investigated. 1. 1. Membrane fusion was specifically dependent on Ca2+ at physiological concentrations. However, at higher concentrations of cations, fusion could be triggered
Ahkong   +59 more
core   +1 more source

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