科学与环境
Molecular snapshots reveal how viral enzymes switch between inserting and removing DNA
来源: Phys.org - latest science and technology news stories · 发布于
Bacteriophages, or viruses that infect bacteria, have a fiendishly simple purpose in life: attach to a bacterial cell, inject their DNA and then use the host's genetic machinery to reproduce. In doing so, they may have evolved some of the most efficient gene-editing tools ever se
Bacteriophages, or viruses that infect bacteria, have a fiendishly simple purpose in life: attach to a bacterial cell, inject their DNA and then use the host's genetic machinery to reproduce. In doing so, they may have evolved some of the most efficient gene-editing tools ever seen in nature.
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New DNA sequencing methods detect rare mutations acquired as bodies grow and age
Somatic mutations, the DNA changes that occur as our bodies grow and age, not only hold an important key to cancer but are emerging as the seeds of a wide range of common, noncancerous diseases. The Somatic Mosaicism across Human Tissues (SMaHT) Network, a National Institutes of
Phys.org - latest science and technology news stories ·
Plants use a molecular measuring tape to tell fungal friend from foe
Chitin, a chain of repeating sugar molecules, is the main building block of fungal cell walls. When fungi grow or are broken down, fragments of chitin chains of different lengths end up in the soil, and plants detect them to monitor the microbes around them.
Phys.org - latest science and technology news stories ·
Scientists reveal why some workout recovery tricks can backfire
Ice baths, massages, compression garments, and recovery supplements promise faster muscle recovery, but research suggests their benefits are often overstated, and some techniques may even undermine long-term gains. Scientists say the most effective recovery methods are far simple
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DNA recording system reveals how a single cell becomes a body
Scientists have traced the development of a mouse embryo from its first two cells to the formation of organs, using a remarkable DNA recording system that reveals the family history of individual cells. Their findings uncover how different cell types emerge on their own schedules
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Scientists find a surprising genetic twist behind octopus intelligence
The remarkable intelligence of octopuses, squid, and cuttlefish may trace back to an ancient reshuffling of their DNA that created new connections between genes. Scientists discovered that these changes in the genome's 3D structure may have helped drive the evolution of their unu
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