Results 61 to 70 of about 24,940 (303)

The Saccharomyces cerevisiae amino acid transporter Lyp1 has a broad substrate spectrum

FEBS Letters, EarlyView.
In Saccharomyces cerevisiae, Yeast Amino acid Transporter family members mediate the import of amino acids, ranging from substrate specialists to generalists. Here, we show that the specialist transporter, Lyp1, has a broader substrate spectrum than previously described, with affinity constants spanning from micromolar to millimolar.
Foteini Karapanagioti, Sebastian Obermaier, Dirk J. Slotboom, Bert Poolman   +3 more
wiley   +1 more source

Nitrous oxide emissions from ephemeral wetland soils are correlated with microbial community composition

Frontiers in Microbiology, 2011
Nitrous oxide (N2O) is a greenhouse gas with a global warming potential far exceeding that of CO2. Soil N2O emissions are a product of two microbially mediated processes: nitrification and denitrification.
Wai eMa, Richard eFarrell, Steven eSiciliano   +2 more
doaj   +1 more source

Complete nitrification by a single microorganism [PDF]

Nature, 2015
Nitrification is a two-step process where ammonia is first oxidized to nitrite by ammonia-oxidizing bacteria and/or archaea, and subsequently to nitrate by nitrite-oxidizing bacteria. Already described by Winogradsky in 1890, this division of labour between the two functional groups is a generally accepted characteristic of the biogeochemical nitrogen ...
Boran Kartal, Boran Kartal, Maartje A. H. J. van Kessel, Daan R. Speth, Per Halkjær Nielsen, Sebastian Lücker, Huub J. M. Op den Camp, Mike S. M. Jetten, Mike S. M. Jetten, Mads Albertsen   +9 more
openaire   +5 more sources

Surfaceome: a new era in the discovery of immune evasion mechanisms of circulating tumor cells

Molecular Oncology, EarlyView.
In the era of immunotherapies, many patients either do not respond or eventually develop resistance. We propose to pave the way for proteomic analysis of surface‐expressed proteins called surfaceome, of circulating tumor cells. This approach seeks to identify immune evasion mechanisms and discover potential therapeutic targets. Circulating tumor cells (
Doryan Masmoudi, Jérome Vialaret, Christophe Hirtz, Catherine Alix‐Panabières   +3 more
wiley   +1 more source

Quantifying nitrous oxide production rates from nitrification and denitrification under various moisture conditions in agricultural soils: Laboratory study and literature synthesis

Frontiers in Microbiology, 2023
Biogenic nitrous oxide (N2O) from nitrification and denitrification in agricultural soils is a major source of N2O in the atmosphere, and its flux changes significantly with soil moisture condition.
Hui Wang, Zhifeng Yan, Zhifeng Yan, Xiaotang Ju, Xiaotong Song, Jinbo Zhang, Siliang Li, Siliang Li, Xia Zhu-Barker   +8 more
doaj   +1 more source

Nitrification in Egyptian Soils [PDF]

The Journal of Agricultural Science, 1919
An attempt has been made to determine the intensity of the biological processes in the soil during the most important periods of the Egyptian farm rotation. The fluctuations of the nitrate content in the surface soil have been taken as the most important index of this activity.In all cases the moisture content of the soil limited these processes more ...
openaire   +3 more sources

Targeting rapid TKI‐induced AXL upregulation overcomes adaptive ERK reactivation and exerts antileukemic effects in FLT3/ITD acute myeloid leukemia

Molecular Oncology, EarlyView.
Adaptive ERK reactivation hinders FLT3 tyrosine kinase inhibitor (TKI) treatment in FLT3/ITD acute myeloid leukemia. Here, we report that FLT3 TKI treatment rapidly induces AXL expression and upregulation that is temporally associated with the adaptive ERK reactivation.
Tessa S. Seale, Li Li, J. Kyle Bruner, Melody Chou, Bao Nguyen, Jaesung Seo, Ruiqi Zhu, Mark J. Levis, Christine A. Pratilas, Donald Small   +9 more
wiley   +1 more source

Short-term effects of nitrapyrin, rice straw and its biochar application on N transformation in soils of humid subtropical China

Acta Agriculturae Scandinavica. Section B, Soil and Plant Science, 2018
The features of N transformations in humid subtropical soils vary greatly due to the wide variations of soil properties, particularly soil pH. Purpose: To understand whether the effects of countermeasures regulating N transformation varied with the ...
Ying Zhao, Jing Wang, Zucong Cai, Christoph Müller, Jinbo Zhang   +4 more
doaj   +1 more source

Nitrification by immobilized cells

Enzyme and Microbial Technology, 1995
Abstract Nitrification has been studied extensively for its significance in the nitrogen cycle and within the treatment of wastewater. Often nitrogen removal from wastewater is problematic because of the low growth rate of the bacteria involved.
Wijffels, R.H., Tramper, J.
openaire   +4 more sources

Complete nitrification by Nitrospira bacteria [PDF]

Nature, 2015
Nitrification, the oxidation of ammonia via nitrite to nitrate, has always been considered to be a two-step process catalysed by chemolithoautotrophic microorganisms oxidizing either ammonia or nitrite. No known nitrifier carries out both steps, although complete nitrification should be energetically advantageous. This functional separation has puzzled
Holger Daims, Elena V. Lebedeva, Petra Pjevac, Ping Han, Craig Herbold, Mads Albertsen, Nico Jehmlich, Marton Palatinszky, Julia Vierheilig, Alexandr Bulaev, Rasmus H. Kirkegaard, Martin von Bergen, Thomas Rattei, Bernd Bendinger, Per H. Nielsen, Michael Wagner   +15 more
openaire   +4 more sources