Results 61 to 70 of about 2,662,632 (251)

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

FEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav, Bogdan I. Florea, Sebastian Geibel   +2 more
wiley   +1 more source

Environmental change impacts on the C- and N-cycle of European forests: a model comparison study [PDF]

, 2013
Forests are important components of the greenhouse gas balance of Europe. There is considerable uncertainty about how predicted changes to climate and nitrogen deposition will perturb the carbon and nitrogen cycles of European forests and thereby alter ...
De Vries, Wim, Werner, Christian R., Haas, E., R. Grote, M. Van Oijen, Butterbach-Bahl, K., H. I. Reuter, Kros, J., G. J. Reinds, Reuter, H. I., Werner, Christian, Leip, A., Grote, Rüdiger, Reinds, G.J., M. Kuhnert, Oijen, M., Van, Oijen, Marcel van, Vries, W., de, C. Werner, W. De Vries, Heuvelink, G.B.M., E. Haas, Reinds, Gert Jan, K. Butterbach-Bahl, Butterbach-Bahl, Klaus, Kuhnert, M., Haas, Edwin, Cameron, D.R., Cameron, David R., Yeluripati, Jagadeesh, Kuhnert, Matthias, Heuvelink, G. B. M., Werner, C., Schelhaas, M.J., D. R. Cameron, J. Kros, Schelhaas, M. J., Kiese, R., Reuter, Hannes Isaak, R. Kiese, Kros, Johannes, Van Oijen, M., Vries, W. de, Oijen, M. Van, J. Yeluripati, A. Leip, Heuvelink, G. B.M., De Vries, W., Heuvelink, Gerard B.M., Kiese, Ralf, D. R. Cameron, Grote, R., M. J. Schelhaas, Yeluripati, J., Cameron, D. R., Reuter, H.I., Reinds, G. J., Heuvelink, Gerardus Bernardus Maria, G. B. M. Heuvelink, Schelhaas, Mart Jan, Leip, Adrian, KIESE Ralf, SCHELHAAS M. J., REINDS Gert Jan, WERNER Christian, DE VRIES W., VAN OIJEN Marcel, KROS Hans, KUHNERT M, REUTER Hannes I., LEIP Adrian, HAAS E, HEUVELINK Gerard, GROTE R, CAMERON David, BUTTERBACH-BAHL K., YELURIPATI Jagadeesh   +76 more
core   +2 more sources

Cyclic Conversions in the Nitrogen Cycle

Frontiers in Microbiology, 2021
The cyclic nature of specific conversions in the nitrogen cycle imposes strict limitations to the conversions observed in nature and explains for example why anaerobic ammonium oxidation (anammox) bacteria can only use nitrite – and not nitrate – as ...
Robbert Kleerebezem, Sebastian Lücker
doaj   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

NON-MODIFIED PT ELECTRODES ENABLING ACCURATE VOLTAMMETRIC QUANTIFICATION OF AMMONIA IN WATER SAMPLES [PDF]

Química Nova
Even though ammonia is a natural component of aquatic environments, elevated concentrations indicate pollution and environmental degradation. Consequently, efficient analytical methods for monitoring ammonia levels are crucial for preserving water ...
Vitoria B. Messias, Regina M. Takeuchi, André L. Santos   +2 more
doaj   +1 more source

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

FEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil, Jeffrey A. Hawkes, Cecilia Blikstad, Pia Lindberg   +3 more
wiley   +1 more source

Optimizing the Nitrogen Use Efficiency in Vegetable Crops

Nitrogen
Nitrogen (N) is the most limiting nutrient for the production of vegetable crops, but anthropogenic sources pose risks due to its transformation into several reactive forms and movement throughout the environment.
Hector Valenzuela
doaj   +1 more source

Membrane composition and thermodynamic identity as boundaries of life for synthetic cell research

FEBS Letters, EarlyView.
What makes a cell a cell? The boundary of a living cell is not just a wall. Read as a Markov blanket, the membrane separates internal from external states, generating identity and non‐equilibrium order. Can this identity be rebuilt from scratch in a synthetic cell?
Caterina Presutti, Bert Poolman
wiley   +1 more source

Fractionating proteins with nitrite-reducing activity in “Candidatus Kuenenia stuttgartiensis” strain CSTR1

Frontiers in Microbiology
The anammox bacteria “Candidatus Kuenenia stuttgartiensis” (Ca. Kuenenia) are able to gain energy by combining ammonium and nitrite to produce nitrogen gas, which is an ecologically and technically significant activity process.
Emea Okorafor Ude, Pranathi Sure, Rimjhim Rimjhim, Lorenz Adrian, Lorenz Adrian, Chang Ding   +5 more
doaj   +1 more source

Hijacking emergency granulopoiesis: Neutrophil ontogeny and reprogramming in cancer

Molecular Oncology, EarlyView.
Neutrophils are highly plastic innate immune cells; their functions in cancer extend beyond the tumour microenvironment. This Review summarises current understanding of neutrophil maturation and heterogeneity and highlights tumour‐induced granulopoiesis as a systemic programme that expands immature, immunosuppressive neutrophils via tumour‐derived ...
Gabriela Marinescu, Yi Feng
wiley   +1 more source