Results 71 to 80 of about 364,417 (317)

A yeast model of 5‐oxoproline accumulation reveals a general toleration to 5‐oxoproline

FEBS Open Bio, EarlyView.
Using a yeast model, we show that even high accumulation of 5‐oxoproline causes only mild cellular stress and does not trigger oxidative stress. Instead, cells adapt by activating efflux pumps and diverse protective pathways, suggesting that previously proposed harmful effects of 5‐oxoproline may arise from indirect metabolic imbalances rather than the
Pratiksha Dubey, Vaishnavi Sanjayan, Praveen Singh, Shantanu Sengupta, Anand Kumar Bachhawat   +4 more
wiley   +1 more source

High-throughput diversity and functionality analysis of the gastrointestinal tract microbiota [PDF]

, 2008
The human gastrointestinal (GI) tract microbiota plays a pivotal role in our health. For more than a decade a major input for describing the diversity of the GI tract microbiota has been derived from the application of small subunit ribosomal RNA (SSU ...
Vos, W.M., de, de Vos, Willem M., Zoetendal, Erwin G., Rajilic-Stojanovic, M., Zoetendal, E.G., Rajilić-Stojanović, Mirjana, de Vos, W.M.   +6 more
core   +1 more source

The oxygen‐sensing FixLJ represses nitrogen fixation in Rhodopseudomonas palustris in response to oxygen

mLife
Biological nitrogen fixation in symbiotic diazotrophs is subject to oxygen regulation by an oxygen‐sensing FixLJ two‐component system under micro‐oxic conditions. However, it remains unclear whether this mechanism is conserved in free‐living diazotrophs.
Lingwei Cui, Yan Zeng, Mengmei Wang, Lu Huang, Zheyi Wang, Ying Liu, Yanning Zheng   +6 more
doaj   +1 more source

Eucaryotic Diversity in a Hypersaline Microbial Mat [PDF]

Applied and Environmental Microbiology, 2008
ABSTRACT To determine the eucaryotic diversity of the hypersaline Guerrero Negro microbial mat, we amplified 18S rRNA genes from DNA extracted from this mat and constructed and analyzed clone libraries. The extent of eucaryotic diversity detected was remarkably low, only 15 species among 890 clones analyzed.
Feazel, Leah M, Spear, John R, Berger, Alicia B, Harris, J. Kirk, Frank, Daniel N, Ley, Ruth E, Pace, Norman R   +6 more
openaire   +4 more sources

How phagocytic cells kill bacteria: Lessons from a professional killer

FEBS Open Bio, EarlyView.
How phagocytic cells ingest and kill bacteria has been studied for more than a century, but many questions remain unanswered. The study of the amoeba Dictyostelium discoideum brings new answers, and new questions. Professional phagocytic cells such as neutrophils and macrophages, as well as free‐living soil amoebae like Dictyostelium discoideum, employ
Otmane Lamrabet, Pierre Cosson
wiley   +1 more source

Explaining microbial population genomics through phage predation [PDF]

, 2009
The remarkable diversity of genes within the pool of prokaryotic genomes belonging to the same species or pan-genome is difficult to reconcile with the widely accepted paradigm which asserts that periodic selection within bacterial populations would ...
Lejla Pasic, T. Frede Thingstad, Francisco Rodriguez-Valera, Ana-Belén Martín-Cuadrado, Beltrán Rodriguez-Brito, Alex Mira, Forest Rohwer   +6 more
core   +2 more sources

New antifungal chlorinated orsellinic aldehydes from the deep-sea-derived fungus Acremonium sclerotigenum LW14

Mycology
Two new pairs of chlorinated orsellinic aldehyde enantiomers acresorcinols A and B (1a/1b and 2a/2b), and three orsellinic aldehydes, acresorcinols C−E (3−5) were discovered from the extract of the deep-sea-derived fungus Acremonium sclerotigenum LW14 ...
Ruiyun Huo, Yu Tu, Chang Liu, Guangrong Zi, Ying Shi, Jinwei Ren, Lei Cai, Ling Liu   +7 more
doaj   +1 more source

De novo synthesis of short‐chain aldehydes and hydrocarbons secreted by the brown marmorated stink bug Halyomorpha halys

FEBS Open Bio, EarlyView.
The brown marmorated stink bug, Halyomorpha halys, mainly secretes 4‐oxo‐(E)‐2‐hexenal, (E)‐2‐decenal, dodecane and tridecane, a mixture representative of that released by many heteropterans. We demonstrated that H. halys can synthesise these secretory components de novo using dietary glucose.
Haruna Fujimori, Koji Noge
wiley   +1 more source

Microbial community development in a dynamic gut model is reproducible, colon region specific, and selective for Bacteroidetes and Clostridium cluster IX [PDF]

, 2010
Dynamic, multicompartment in vitro gastrointestinal simulators are often used to monitor gut microbial dynamics and activity. These reactors need to harbor a microbial community that is stable upon inoculation, colon region specific, and relevant to in ...
Marzorati, M., Sam Possemiers, Sahar El Aidy, Kleerebezem, M., Verstraete, Willy, Smidt, H., Marzorati, Massimo, Philippe Gérard, Rabot, S., Charlotte Grootaert, Verstraete, W., Aidy, S.F., El, Erwin Zoetendal, Hauke Smidt, Possemiers, Sam, Zoetendal, Erwin, Kleerebezem, Michiel, van der Wiele, T., Sylvie Rabot, Grootaert, C., Michiel Kleerebezem, Possemiers, S., Massimo Marzorati, Derrien, Muriel, Pieter Van den Abbeele, Tom Van de Wiele, Derrien, M.M.N., Rabot, Sylvie, Grootaert, Charlotte, van den Abbeele, P., Bruneau, A., Wiele, T., van der, Willy Verstraete, Zoetendal, E.G., El Aidy, Sahar, Gerard, Philippe, Abbeele, P., van den, Muriel Derrien, Smidt, Hauke, Van de Wiele, Tom, Gérard, P., Van den Abbeele, Pieter, Bruneau, Aurelia, El Aidy, S.F., Aurélia Bruneau   +44 more
core   +1 more source

Structural and functional characterization of dihydrodiol dehydrogenase PahB recognizing high-molecular-weight PAH substrates

Applied and Environmental Microbiology
Polycyclic aromatic hydrocarbons (PAHs), especially high-molecular-weight PAHs (HMW-PAHs), are persistent environmental pollutants that are difficult to remove and challenge environmental management. Altererythrobacter sp.
Qun Han, Lin-Lin Tian, Lu Guo, Rui Cui, Ze-Shen Liu, De-Feng Li   +5 more
doaj   +1 more source