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Molecular Biology News
Fri, 17 Nov 2017 14:17:56 EST
A photosynthetic organism's 'Water World'
Following the path of radicals and being able to identify many damaged residues because of incredibly accurate, expeditious and sensitive mass spectrometry, three scientists studied the great granddaddy of all photosynthetic organisms -- a strain of cyanobacteria -- to develop the first experimental map of that organism's water world.
Thu, 16 Nov 2017 17:24:52 EST
Unlocking the secrets of Ebola
Scientists have identified a set of biomarkers that indicate which patients infected with the Ebola virus are most at risk of dying from the disease. The results come from one of the most in-depth studies ever of blood samples from patients with Ebola. Researchers found 11 biomarkers that distinguish fatal infections from non-fatal ones and two that, when screened for early upon symptom onset, accurately predict which patients are likely to die.
Thu, 16 Nov 2017 14:20:58 EST
How the immune system identifies invading bacteria
Never-before-seen images of mouse immune system proteins and bacterial bits reveal an inspection strategy that identifies pathogens.
Thu, 16 Nov 2017 13:28:00 EST
Paraplegic rats walk and regain feeling after stem cell treatment
Paralyzed rats implanted with engineered tissue containing human stem cells were able to walk independently and regained sensory perception in their hind legs and tail. The implanted rats also show some degree of healing in their spinal cords. The research demonstrates the great potential of stem cells to treat spinal cord injury.
Thu, 16 Nov 2017 13:27:57 EST
Bacterium in a beetle makes it a leaf-eater
A leaf-eating beetle has evolved a symbiotic relationship that allows the insect to break down pectin. The findings on the novel function of the bacterium, which has a surprisingly tiny genome -- much smaller than previous reports on the minimum size required for an organism not subsisting within a host cell.
Thu, 16 Nov 2017 13:27:19 EST
Diffusion plays unusual signaling role in drosophila embryos, researchers find
Diffusion plays an unexpected role in cell differentiation during the early stages of development in the embryos of Drosophila, or fruit flies, researchers have found. Instead of spreading a molecular signal out, it was found that diffusion, facilitated through a carrier molecule, actually concentrates the signal in one place.
Thu, 16 Nov 2017 10:50:11 EST
New procedures for DNA stability
In eukaryotic cells the proximity of the genes to the nuclear pores, which are found in the nuclear membrane, contributes to maintaining the integrity of the genome. This is due to the fact that the anchoring of DNA to the pore during transcription avoids the formation of DNA-RNA hybrids, which are a natural source of DNA breaks and genome instability.
Wed, 15 Nov 2017 15:56:20 EST
Potential cell receptors to reduce antibiotic resistance identified
The bacterium Pseudomonas aeruginosa is the leading cause of hospital-acquired infections. The pathogen is resistant to many antibiotics so treating those infections, particularly in patients with compromised immune systems, is difficult. A new study has identified certain chemical receptors in cells that could deceive the bacteria and improve patient response to drugs.
Wed, 15 Nov 2017 14:14:03 EST
Cyanobacterial studies examine cellular structure during nitrogen starvation
Researchers are using neutrons to study what happens when cyanobacteria cell samples are starved for nitrogen. They are especially interested in how this process affects phycobilisomes, large antenna protein complexes in the cells that harvest light for photosynthesis.
Wed, 15 Nov 2017 09:23:23 EST
How cells filter status updates
Social media have become an indispensable part of our everyday life. We use them constantly to screen the latest news and share pre-selected information. The cells in our body do a similar thing. Information is pre-selected and transmitted to the immune system in order to fight against unwelcome invaders, such as viruses, bacteria, parasites or cancer. This pre-selection occurs by means of a highly complex molecular machine. Biochemists have now unveiled the inner workings of this complex molecular machine.
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