Novinky ze světa vědy
Víme, co se děje i jak to funguje.
Buďte o krok napřed. Sledujte s námi, jak věda mění realitu.
Bioinženýrství
Science Daily: Bioengineering | 2026-05-23
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 | 2026-05-23
Lab glove deposits drive false microplastic signatures in atmospheric pollution samples
Researchers uncover contamination pathway that’s complicating efforts to understand how much plastic is in the air| More info
Elusive electronic effect could explain the origins of chirality for all life on Earth
Study suggests spin selectivity is different in enantiomers – altering their reaction rate – which ‘challenges a fundamental assumption in the field’| More info
Electrifying MOF synthesis drastically reduces time it takes to make them
External electric fields stimulate the formation of various metal–organic framework materials| More info
Nanotechnologie
Nanotechnology research news from Nanowerk | 2026-05-23
Imaging ellipsometry for process control of MXene-based capacitive devices
Imaging ellipsometry enables non-destructive, multi-scale quality control of microstructured MXene thin films during device fabrication.| More info
Stressed crystal creates nanoscale patterns on chip materials at room temperature
Room-temperature e-beam method uses crystal buckling to pattern hard materials like silica for next-gen photonic and optoelectronic chips.| More info
Graphene quantum dots show promise in targeting Parkinson's-related protein clumping
Engineered carbon-based nanomaterials can interfere with the aggregation of misfolded proteins linked to neurodegenerative diseases, offering a new direction for future therapeutic exploration.| More info
Controlling the formation of carbon nanotubes and junctions from bilayer graphene
Electron-beam cuts make twisted graphene rebuild itself into carbon nanotubes, arrays, and Y-junctions through controlled edge chemistry.| More info