Poor protein utilization contributes to neurodegeneration

Neurodegeneration can occur more quickly if nerve cells lack retromer proteins, which are responsible for breaking down toxic tau protein. This conclusion was reached by scientists who observed genetically modified fruit flies that produced human tau protein in 39 neurons of the eye. Tau protein itself already caused the death of nerve cells, and the… Continue reading Poor protein utilization contributes to neurodegeneration

The algorithm determined the mouse's pain level based on its muzzle expression

American scientists have developed a cloud platform that can assess the severity of pain in black laboratory mice. She analyzes the expression of the animal's face – the position of its nose, ears, whiskers and the degree of squinting of the eyes. Previously, researchers coped with this task manually, but, as the results show, the… Continue reading The algorithm determined the mouse's pain level based on its muzzle expression

Biochemists have discovered the mechanism behind the red coloration of birds

Biochemists from the USA and Portugal have discovered how in vertebrate cells yellow carotenoid pigments are converted into red ketocarotenoids, which are responsible for the red coloration of some vertebrates. It turned out that this transformation requires two enzymes, and the third, auxiliary, plays the role of a carrier of reacting molecules. The study was… Continue reading Biochemists have discovered the mechanism behind the red coloration of birds

Evolution forced mammals to recreate salivary proteins fifteen times

American bioinformaticians have discovered traces in the genomes of mammals of 15 independent occurrences of new proteins responsible for the viscosity of saliva. According to the findings of the authors of a study published in Science Advancesthe culprit is a region of the genome with a high mutation rate and selection pressure during the evolutionary… Continue reading Evolution forced mammals to recreate salivary proteins fifteen times

Watering with ethyl alcohol protected the rhizome from drought

Japanese geneticists have proposed increasing the drought resistance of plants using ethanol. They watered Tal's rhizomes (Arabidopsis thaliana) with a weak alcohol solution for three days and showed that this helped the plants survive the subsequent three-week drought. In response to alcohol, the plant activates the synthesis of the stress phytohormone, abscisic acid, which helps… Continue reading Watering with ethyl alcohol protected the rhizome from drought

Geneticists have found DNA similarities in unrelated twins

Spanish scientists have found that the strong similarity of people's faces is associated with DNA characteristics: half of the studied pairs of twins had exactly the same sequences in the genome. The researchers also collected data on the epigenome and microbiome of the mouth – but there were no noticeable similarities. The work was published… Continue reading Geneticists have found DNA similarities in unrelated twins

People didn't want to help others after a sleepless night and daylight saving time.

After a night of poor sleep or no sleep at all, people consider themselves less willing to help others, American scientists found in laboratory experiments and studying the sleep experience of people at home. It also found that after daylight saving time, when people potentially lose an hour of sleep, they donate less than they… Continue reading People didn't want to help others after a sleepless night and daylight saving time.

Half of the cytoplasm was taken from a living cell and its transcript was sequenced

Swiss scientists have proposed and developed a method that allows them to decipher the transcriptome of individual cells without killing them. To do this, they performed a biopsy of the cytoplasm and sequenced the resulting genetic material. Scientists have used this technique to separate different types of morphologically similar cells and describe how the expression… Continue reading Half of the cytoplasm was taken from a living cell and its transcript was sequenced

Simulated plankton surfed on turbulence and accelerated twice

Physicists and biologists from France and the USA have modeled the movement of plankton, which uses vortices in the water to move faster, riding them like surfers on waves. To do this, scientists derived the equation of motion of plankton, which measures the local flow gradient and changes its direction so as to swim upward… Continue reading Simulated plankton surfed on turbulence and accelerated twice

Gut bacteria helped bees communicate

Scientists from Germany and Switzerland have assessed the contribution of the gut microbiome to the social behavior of bees. It turned out that it makes bees interact with each other more often. Moreover, metamorphoses in insect behavior are accompanied by changes in gene expression and metabolite synthesis in the brain. The results of the study… Continue reading Gut bacteria helped bees communicate