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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

Atomic manipulation enters the mesoscale as 40,000 atoms repositioned in single crystal
Electron beam method used to create ’a new form of engineered artificial matter’| 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
The first-time direct observation of exotic charge-neutral quasiparticles in twisted tungsten diselenide
Goldstone modes were directly observed for the first time in twisted tungsten diselenide, revealing charge-neutral excitations in quantum materials.| More info

A new way to detect harmful bacteria in real time
AI-powered real-time sensing detects bacteria via volatile chemical fingerprints, enabling faster infection diagnosis and targeted treatment.| More info

Nanoarchitectonics rebuilds spent battery cathodes with fluorine from PFAS forever chemicals
Nanoarchitectonics uses fluorine from PFAS to rebuild spent lithium-iron phosphate cathodes into high-capacity composite electrodes.| More info

Nanoscale device converts wasted infrared light into usable energy
Researchers have developed a nanoscale device that converts low-energy infrared and red light into higher-energy visible light, eventually improving solar panels, sensing technologies and advanced manufacturing systems.| More info

New process enables fabrication of transistors from perovskite
A new approach controls low-cost solution processing of perovskites, improving the order of their thin layers for use in solar cells, LEDs and transistors.| More info