Microbiology

Microbiology News -- ScienceDaily Microbiology News. Articles and images on biochemistry research, micro-organisms, cell functions and related topics, updated daily.

  • Visualizing 'unfurling' microtubule growth
    on November 13, 2018 at 8:51 pm

    Living cells depend absolutely on microtubules that form a scaffolding for moving materials inside the cell. Microtubule fibers are hollow rods made of much smaller tubulin subunits that spontaneously assemble at one end of the rod, but exactly how they do this inside the crowded environment of living cells has been a mystery. Now researchers have uncovered the mechanism that puts these blocks in place. […]

  • Synthetic DNA-delivered antibodies protect against Ebola in preclinical studies
    on November 13, 2018 at 8:51 pm

    Scientists have successfully engineered novel DNA-encoded monoclonal antibodies (DMAbs) targeting Zaire Ebolavirus that were effective in preclinical models. Study results showed that DMAbs were expressed over a wide window of time and offered complete and long-term protection against lethal virus challenges. DMAbs may also provide a novel powerful platform for rapid screening of monoclonal antibodies enhancing preclinical development. […]

  • The dawn of a new era for genebanks
    on November 13, 2018 at 4:04 pm

    One important aspect of biodiversity is genetic variation within species. A notable example is the variety of cultivars of crop plants. Scientists have now characterized at the molecular level a world collection of barley, comprising seed samples from more than 22,000 varieties. […]

  • Moths and magnets could save lives
    on November 13, 2018 at 4:03 pm

    Bioengineers have combined a virus that infects moths with magnetic nanoparticles to create a potential new therapy for inherited genetic diseases like muscular dystrophy, sickle cell, cystic fibrosis, spinal muscular atrophy and some forms of cancer. […]

  • Microorganisms help production
    on November 13, 2018 at 4:03 pm

    Oil is still the most economically attractive resource for fuels and basic chemicals that can be used to manufacture everyday products such as plastic bottles and detergent. New biotechnological processes aim to simplify the use of renewable biomass as an alternative to the fossil raw material and make it more cost-effective. […]

  • Purple bacteria 'batteries' turn sewage into clean energy
    on November 13, 2018 at 1:09 pm

    Purple phototrophic bacteria -- which can store energy from light -- when supplied with an electric current can recover near to 100 percent of carbon from any type of organic waste, while generating hydrogen gas for use as fuel. […]

  • Planetary boundaries for antibiotic and pesticide resistance identified
    on November 13, 2018 at 12:19 am

    Researchers have now published the first estimates of antibiotic and pesticide 'planetary boundaries.' The researchers suggest that if resistance to antibiotics and pesticides goes beyond these boundaries, societies risk large-scale health and agricultural crises. The results indicate one group of bacteria has passed a boundary. […]

  • How mitochondria deploy a powerful punch against life-threatening bacteria
    on November 12, 2018 at 6:15 pm

    Researchers discover that mitochondria play an important role in supporting the immune system's response against MRSA infection. […]

  • Stripping the linchpins from the life-making machine reaffirms its seminal evolution
    on November 12, 2018 at 2:59 pm

    This experiment had a good chance of crashing. Instead, it delivered whopping evidence to corroborate the earliest evolution of the translational system, the mechanisms which make life out of our genes. The study swapped out all its magnesium, tabula rasa, and showed that the system, centering on the ribosome, would have thrived basically as it is today 4 billion years ago at the earliest foundations of life on Earth. […]

  • Salmonella found to be resistant to different classes of antibiotics
    on November 9, 2018 at 11:57 pm

    Common bacteria that cause foodborne diseases are resistant to antibiotics used to treat infections, according to research that identified 39 genes responsible for this resistance. […]

  • Transmission of antibiotic resistant E. coli mapped in wild giraffe social networks
    on November 9, 2018 at 6:04 pm

    A team has shown that antibiotic-resistant Escherichia coli bacteria in wild giraffes most likely come from anthropogenic sources, such as local cattle herds and humans. […]

  • Scientists simplify and accelerate directed evolution bioengineering method
    on November 9, 2018 at 3:15 pm

    Researchers reported that they have accelerated and simplified directed evolution by having live cells do most of the heavy lifting. By inserting a specially engineered DNA replication system into yeast, the scientists were able to coax selected genes to rapidly and stably mutate and evolve as the host yeast cells reproduced. […]

  • A toast to the proteins in dinosaur bones
    on November 9, 2018 at 12:30 pm

    Burnt toast and dinosaur bones have a common trait, according to a new study. They both contain chemicals that, under the right conditions, transform original proteins into something new. It's a process that may help researchers understand how soft-tissue cells inside dinosaur bones can survive for hundreds of millions of years. […]

  • Anopheles mosquitoes could spread Mayaro virus in US, other diverse regions
    on November 8, 2018 at 9:43 pm

    Mosquitoes of the genus Anopheles are well known as primary vectors of malaria. But a new study suggests that Anopheles species, including some found in the United States, also are capable of carrying and transmitting an emerging pathogen, Mayaro virus, which has caused outbreaks of disease in South America and the Caribbean. […]

  • Using mice, researchers identify how allergic shock occurs so quickly
    on November 8, 2018 at 7:24 pm

    Researchers used mouse models to track how immune cells are triggered during anaphylactic shock. They describe a previously unknown mechanism in which a newly identified immune cell basically mines the blood vessels for allergens and then utilizes an unusual mechanism for rapidly delivering the blood-borne allergens to mast cells. […]

  • Mark your calendar: All infectious diseases are seasonal
    on November 8, 2018 at 7:24 pm

    Most of us are aware of the seasonal cycle of influenza outbreaks, which for Americans peak in the winter. Scientists now make a case that all infectious diseases have a seasonal element. […]

  • Replaying the tape of life: Is it possible?
    on November 8, 2018 at 7:23 pm

    A new review explores the complexity of evolution's predictability in extraordinary detail. In it, researchers closely examine evidence from a number of empirical studies of evolutionary repeatability and contingency in an effort to fully interrogate ideas about contingency's role in evolution. […]

  • Broad genome analysis shows yeasts evolving by subtraction
    on November 8, 2018 at 7:23 pm

    An unprecedented comparison of hundreds of species of yeasts has helped geneticists brew up an expansive picture of their evolution over the last hundreds of millions of years, including an analysis of the way they evolved individual appetites for particular food sources that may be a boon to biofuels research. […]

  • Healing kidneys with nanotechnology
    on November 8, 2018 at 7:23 pm

    Researchers have developed a new method for treating and preventing acute kidney injury. Their technique involves the use of tiny, self-assembling forms measuring just billionths of a meter in diameter. […]

  • We now know how RNA molecules are organized in cells
    on November 8, 2018 at 7:23 pm

    Researchers have for the first time visualized how RNA molecules are organized in cells. […]

  • Toxin complex of the plague bacterium and other germs decoded
    on November 8, 2018 at 6:05 pm

    Researchers decode the toxin complex of the plague bacterium and other germs. […]

  • Researchers closer to gonorrhea vaccine after exhaustive analysis of proteins
    on November 8, 2018 at 3:59 pm

    In a study of proteins historic in its scope, researchers have pushed closer both to a vaccine for gonorrhea and toward understanding why the bacteria that cause the disease are so good at fending off antimicrobial drugs. […]

  • Breast milk & babies' saliva shape oral microbiome
    on November 8, 2018 at 3:59 pm

    Newborn breastfed babies' saliva combines with breastmilk to release antibacterial compounds that help to shape the bacterial communities (microbiota) in babies' mouths, biomedical scientists have found. […]

  • Molecular inhibition gets cells on the move
    on November 8, 2018 at 3:59 pm

    Researchers revealed that two molecules, PTEN and PIP3, mutually inhibit each other to ensure their exclusive distribution at opposite ends of motile cells. This polarized distribution results in the establishment of pseudopodia only at one cell end, providing the driving force for cell movement. Although discovered in a simple organism, the slime mold, this mechanism may also be active in many more advanced species, including in mammalian immune cells. […]

  • Exploiting epigenetic variation for plant breeding
    on November 8, 2018 at 3:59 pm

    Epigenetic changes can bring about new traits without altering the sequence of genes. This may allow plants to respond quicker to changes in their environment. Plant biologists have now demonstrated that epigenetic variation is also subject to selection and can be inherited. This could expand the possibilities for crop breeding. […]

  • Biomimetics: The chemical tricks of our blood
    on November 8, 2018 at 2:13 pm

    Biomolecules such as hemoglobin or chlorophyll are difficult to study. It is worth investigating similar but simpler structures in the lab. Unexpected behavior has now been found in phthalocyanines, whose molecular ring structure closely resembles the crucial sections of hemoglobin or chlorophyll. Their center can be switched into different states with the help of green light, which affects their chemical behavior. […]

  • Cell behavior, once shrouded in mystery, is revealed in new light
    on November 8, 2018 at 2:12 pm

    Previously, in order to study cell membranes, researchers would often have to freeze samples. The proteins within these samples would not behave like they would in a normal biological environment. Now, using an atomic force microscope, researchers can observe individual proteins in an unfrozen sample -- acting in a normal biological environment. This new observation tool could help scientists better predict how cells will behave when new components are introduced. […]

  • Exhaustive analysis reveals cell division's inner timing mechanisms
    on November 7, 2018 at 10:29 pm

    After exploring every possible correlation, researchers shed new light on a long-standing question about what triggers cell division. […]

  • Goldilocks and the optimal mating distance: Neither too small nor too large but just right
    on November 7, 2018 at 7:34 pm

    Evolutionary theory predicts that the fitness of an individual is maximized when the genetic differences between its parents are neither too small nor too large but some ideal amount known as the optimal mating distance. […]

  • Machine-learning algorithm predicts how cells repair broken DNA
    on November 7, 2018 at 6:38 pm

    By creating a machine-learning algorithm that predicts how human and mouse cells respond to CRISPR-induced breaks in DNA, a team of researchers discovered that cells often repair broken genes in ways that are precise and predictable, sometimes even returning mutated genes back to their healthy version. In addition, the researchers put this predictive power to the test and successfully corrected mutations in cells taken from patients with one of two rare genetic disorders. […]