Results 81 to 90 of about 149,407 (284)

Higher‐Level Structural Classification of Pseudomonas Cyclic Lipopeptides through Their Bioactive Conformation

Advanced Science, EarlyView.
Solution structures of a series of cyclic lipodepsipeptides from Pseudomonas reveal that these specialized metabolites adopt left‐handed alpha helical conformations of only two types, being either ‘stapled’ or ‘catch‐pole’ helix. The particular modular distribution of the biosynthetic gene clusters is found to determine the extent of their conserved ...
Benjámin Kovács, Durga Prasad, Vic De Roo, Matthias Vanheede, Penthip Muangkaew, Annemieke Madder, Monica Höfte, René De Mot, Niels Geudens, José C. Martins   +9 more
wiley   +1 more source

Preparation of uniformly labelled 13C- and 15N-plants using customised growth chambers

Plant Methods, 2020
Background Stable isotopically labelled organisms have found wide application in life science research including plant physiology, plant stress and defense as well as metabolism related sciences.
Asja Ćeranić, Maria Doppler, Christoph Büschl, Alexandra Parich, Kangkang Xu, Andrea Koutnik, Hermann Bürstmayr, Marc Lemmens, Rainer Schuhmacher   +8 more
doaj   +1 more source

Is there a niche complementarity for nitrate uptake among savannah shrub and tree species in a very deep Brazilian soil? [PDF]

, 2019
Belowground niche complementarity between deep-rooted and shallow-rooted species in mixed forests may result in a more complete exploitation of soil resources than in monocultures.
Alo, Livia, Bouillet, Jean-Pierre, Guerrini, Iraê Amaral, Laclau, Jean-Paul, Pinheiro, Rafael   +4 more
core  

The influence of nova nucleosynthesis on the chemical evolution of the Galaxy [PDF]

, 2000
We adopt up-to-date yields of 7Li, 13C, 15N from classical novae and use a well tested model for the chemical evolution of the Milky Way in order to predict the temporal evolution of these elemental species in the solar neighborhood.
A Renzini, C Chiappini, D Romano, F D’Antona, F D’Antona, F Matteucci, F Matteucci, GT Bath, J José, LB Hoek, M CenturiÓn, M Lemoine, M Valle Della, N Prantzos, O Stahl, P Crane, RD Gehrz, S Starrfield, SE Woosley, TL Wilson, WD Langer   +20 more
core   +2 more sources

Polyoxometalate as Hydrogen–Electron Hub in Metal–Organic Complex for Electrocatalytic Nitrate Reduction to Ammonia

Advanced Science, EarlyView.
To tackle low electrocatalytic nitrate reduction to ammonia efficiency in neutral media, this work designs chain‐like dinuclear/trinuclear polyoxometalate‐based metal‐organic complexes. Metal clusters provide nitrate adsorption/activation sites, while polyoxometalates (POMs) drive water dissociation to generate active hydrogen (*H) that migrates to ...
Qiushuang Jiang, Xinming Wang, Shengji Tian, Haijun Pang, Yongbin Song, Huiyuan Ma   +5 more
wiley   +1 more source

Computation‐Guided Dual‐Site Electrocatalysts for Record‐Performance Nitrite‐to‐Ammonia Conversion

Advanced Science, EarlyView.
Designing Cu doped ZnO catalysts for NO2RR via first principles calculation and boosting electrocatalytic nitrite reduction through Cu‐ZnO synergistic deoxygenation, hydrogenation, and NH3 desorption. Cu doping elevates the d‐band center of Zn, strengthening *NO2 binding and deoxygenation, while ZnO sites regulate water adsorption and dissociation ...
Hui Zhang, Haiyan Duan, Donglin Han, Zhenlin Wang, Xingchi Li, Dengchao Peng, Lupeng Han, Tianting Pang, Evangelina Pensa, Wenqiang Qu, Yongjie Shen, Haotian Wang, Wei Ren, Ming Xie, Emiliano Cortés, Dengsong Zhang   +15 more
wiley   +1 more source

Ammonia assimilation in Bacillus polymyxa. 15N NMR and enzymatic studies [PDF]

, 1987
Pathways of ammonia assimilation into glutamic acid and alanine in Bacillus polymyxa were investigated by 15N NMR spectroscopy in combination with measurements of the specific activities of glutamate dehydrogenase, glutamine synthetase, glutamate ...
Kanamori, Keiko, Roberts, John D., Weiss, Richard L.   +2 more
core  

Structural Basis of the Membrane Association by the Conserved RocS Membrane‐Targeting Sequence in Streptococcus

Advanced Science, EarlyView.
Chromosome segregation in Streptococcus pneumoniae depends on RocS, a bitopic protein whose membrane‐anchoring mechanisms were unclear. Using NMR and AFM, this study reveals that the widely conserved RocS anchor binds to membranes via a conserved kink‐helix motif which inserts into lipid nanodomains.
Ana Álvarez‐Mena, Estelle Morvan, Clara Lambert, Anagha Kallisseri Parambil, Martin Lefeuvre, Zeren Xu, Nadia El Mammeri, Florian Malard, Erick J. Dufourc, Cécile Feuillie, Christophe Grangeasse, Birgit Habenstein   +11 more
wiley   +1 more source

Growth, N-uptake and Yield Attributes of Sunflower Plants Grown on an Aridisols in Response to N-fertilizer [PDF]

Journal of Stress Physiology & Biochemistry
A field experiment was conducted to study the impact of different nitrogen fertilizer rates (0, 50, 100 and 150 kg N/ha as urea) on dry matter yield, nitrogen uptake (N), seed yield, seed oil content and properties of sunflower using the 15N labeling ...
F. Kurdali, J. Attar
doaj  

Enxertia e água de irrigação carbonatada no transporte de 15N e na produção do tomateiro Grafting and carbonated irrigation water in transport of 15N and in the tomato production

Revista Brasileira de Engenharia Agrícola e Ambiental, 2007
Estudaram-se os efeitos da aplicação de CO2, via água de irrigação, e da enxertia do tomateiro no transporte de 15N e na produção do tomateiro. Os tratamentos foram arranjados em delineamento inteiramente ao acaso no esquema fatorial 2 x 2 (com e sem CO2
Roberto B. F. Branco, Rumy Goto, Ary G. Carneiro Júnior, Vandeir F. Guimarães, João D. Rodrigues, Paulo C.O. Trivelin, Liciana V. de A. Silveira   +6 more
doaj   +1 more source