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Bioinženýrství
Science Daily: Bioengineering | 2026-05-19
Scientists just found what keeps plant cells from growing out of control
Before seedlings can photosynthesize, they depend on fatty acids—and on peroxisomes to process them. Researchers discovered that the protein PEX11 not only helps these structures divide but also controls their size during early growth. When key genes were altered, peroxisomes grew abnormally large, suggesting internal vesicles normally keep them in balance. Remarkably, a yeast version of the protein fixed the problem, pointing to a deeply conserved mechanism across species.| More info
A donut-shaped protein breaks apart to start bacterial cell division
Researchers have revealed how bacteria precisely control the genes that trigger cell division. The study shows that the MraZ protein, which normally forms a donut-shaped structure, must bend and partially break apart to bind key DNA sequences that activate division genes. Using cryo-electron microscopy, scientists captured this interaction in remarkable detail. The mechanism appears to be widespread across bacteria, offering a new window into how microbes regulate growth.| More info
Light-guided evolution creates proteins that can switch, sense, and compute
Researchers have created a method called optovolution that uses light to guide the evolution of proteins with dynamic behaviors. By engineering yeast cells so their survival depended on proteins switching states at the right time, scientists could rapidly select the best-performing variants. The technique produced new light-sensitive proteins that respond to different colors and improved optogenetic systems. It even evolved a protein that behaves like a tiny logic gate, activating genes only when two signals are present.| More info
The 4x rule: Why some people’s DNA is more unstable than others
A large genetic study shows that many people carry DNA sequences that slowly expand as they get older. Common genetic variants can dramatically alter how fast this expansion happens, sometimes multiplying the pace by four. Researchers also identified specific DNA expansions linked to severe kidney and liver disease. The findings suggest that age-related DNA instability is far more common than previously realized.| More info
Sunflowers may be the future of "vegan meat"
A collaboration between Brazilian and German researchers has led to a sunflower-based meat substitute that’s high in protein and minerals. The new ingredient, made from refined sunflower flour, delivers excellent nutritional value and a mild flavor. Tests showed strong texture and healthy fat content, suggesting great potential for use in the growing plant-based food sector.| More info
Chemie
Chemistryworld.com | 2026-05-19
New record set by quantum computing as it models its largest protein yet
Two IBM quantum processors working in concert with two supercomputers simulate a protein–ligand system with 12,000 atoms| More info
‘Flip-over’ nucleophilic substitution reaction challenges classic SN2 textbook mechanism
Team behind work say this is a reminder that even simple reactions are more complicated than they first seem| More info
Click chemistry toolbox expanded with 'forbidden' C–C bond forming reaction
Copper-catalysed addition produces functional links that should be compatible with biological systems| More info
Neat and uniform five-metal nanoparticle synthesis surprises scientists
Multimetallic particles could aid hydrogen economy, breaking down ammonia four times faster than ruthenium catalyst| More info
Nanotechnologie
Nanotechnology research news from Nanowerk | 2026-05-19
Covalent organic frameworks boost proton conductivity in fuel cell membranes
A new review details how covalent organic frameworks form continuous proton channels in fuel cell membranes, boosting conductivity under low humidity and high temperatures.| More info
New chip offers way to make use of quantum system 'imperfections'
A new chip simulates how quantum systems behave when they lose energy to their surroundings, turning real-world imperfections into tools for quantum research.| More info
The shaping of surface clusters
A new study describes how active and passive exchange of cellular material controls the formation of membrane clusters.| More info
Ceramic motor-driven linear actuator combines sub-nanometer precision with high force
Breaking with traditional linear actuator principles - advantages for nanopositioning in optics, astronomy, aerospace, semiconductor technologies.| More info
Insect-inspired flat metalens sensor detects and predicts motion across 135 degrees
A compact metalens-based nanophotonic sensor mimics insect compound eyes to detect motion across a 135-degree field of view and predict object trajectories using deep learning.| More info