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Molecular Biology News
Fri, 19 Jan 2018 19:03:58 EST
Breakthrough study shows how plants sense the world
Plants lack eyes and ears, but they can still see, hear, smell and respond to environmental cues and dangers. They do this with the aid of hundreds of membrane proteins that sense microbes or other stresses. Researchers now have created the first network map for 200 of these proteins. The map shows how a few key proteins act as master nodes critical for network integrity, and the map also reveals unknown interactions.
Fri, 19 Jan 2018 19:03:55 EST
Cells lacking nuclei struggle to move in 3-D environments
A study examined the role of the physical structure of the nucleus in cell movement through different surfaces.
Fri, 19 Jan 2018 09:03:44 EST
How plants see light
The proteins PCH1 and PCHL help plants adapt to their surroundings. Plants react sensitively to changes in their surroundings and possess the ability to adapt to them. They use the photoreceptor protein phytochrome B to see light and then regulate processes such as seed germination, seedling development, longitudinal growth and flower formation.
Thu, 18 Jan 2018 16:24:58 EST
Why animals diversified on Earth: Cancer research provides clues
Can tumors teach us about animal evolution on Earth? Researchers believe so and now present a novel hypothesis of why animal diversity increased dramatically on Earth about half a billion years ago. A biological innovation may have been key.
Thu, 18 Jan 2018 16:24:49 EST
Researchers create first stem cells using CRISPR genome activation
In a scientific first, researchers have turned skin cells from mice into stem cells by activating a specific gene in the cells using CRISPR technology. The innovative approach offers a potentially simpler technique to produce the valuable cell type and provides important insights into the cellular reprogramming process.
Thu, 18 Jan 2018 14:27:35 EST
Certain flu virus mutations may compensate for fitness costs of other mutations
Seasonal flu viruses continually undergo mutations that help them evade the human immune system, but some of these mutations can reduce a virus's potency. According to new research, certain mutations in the genome of influenza A may help counteract the weakening effects of other mutations.
Thu, 18 Jan 2018 14:27:23 EST
Packing a genome, step-by-step
For the first time, scientists can see in minute-time resolution how cells package chromosomes into highly condensed structures prior to cell division.
Thu, 18 Jan 2018 14:27:01 EST
A new, dynamic view of chromatin movements
In cells, proteins tightly package the long thread of DNA into pearl necklace-like complexes known as chromatin. Scientists now show for the first time how chromatin moves, answering longstanding questions about how its structure helps regulate gene expression.
Thu, 18 Jan 2018 14:26:45 EST
Protein designed entirely from scratch functions in cells as a genuine enzyme
Artificial biology is working toward creating a genuinely new organism. Researchers are designing and building proteins that can fold and mimic the chemical processes that sustain life. Now they have confirmed that at least one of their new proteins can catalyze biological reactions in E. coli, meaning that a protein designed entirely from scratch functions in cells as a genuine enzyme.
Thu, 18 Jan 2018 14:25:40 EST
Counting chromosomes: Plant scientists solve a century-old mystery about reproduction
Geneticists have solved a century-old mystery by discovering a remarkable mechanism that enables plants to count their chromosomes. Their ability to detect imbalances in male and female contributions to the next generation determines their progeny's viability and fertility.
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