Results 81 to 90 of about 3,228,711 (305)

Bacterioplankton Communities in Dissolved Organic Carbon-Rich Amazonian Black Water. [PDF]

Microbiol Spectr, 2023
Sylvain FÉ, Bouslama S, Holland A, Leroux N, Mercier PL, Val AL, Derome N.   +6 more
europepmc   +1 more source

A new species of Prosekia (Philosciidae, Isopoda) from an inundation forest (igapó) in the Central Amazon

, 1984
Prosekia tarumae n. sp.
De Castro, A.
core  

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Macrolobium paulobocae (Leguminosae, Detarioideae), a new species from seasonally inundated black-water floodplain forests in the Brazilian Amazon. [PDF]

Brittonia, 2023
Farroñay F, de Sousa Macedo MT, Cardoso D, Vicentini A.   +3 more
europepmc   +1 more source

Chemodiversity of dissolved organic matter in the Amazon Basin [PDF]

, 2016
Regions in the Amazon Basin have been associated with specific biogeochemical processes, but a detailed chemical classification of the abundant and ubiquitous dissolved organic matter (DOM), beyond specific indicator compounds and bulk measurements, has ...
Bastos, Wanderley, Bastviken, David, Enrich-Prast, Alex, Gonsior, Michael, Harir, Mourad, Hertkorn, Norbert, Luek, Jenna L., Schmitt-Kopplin, Philippe, Valle, Juliana   +8 more
core   +1 more source

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

FEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn, Barbara Seroka, Ryszard Lazny, Zenon Lotowski, Thore Rohwerder   +4 more
wiley   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Promiscuous stimulation of HSP70 ATPase activity by parasite‐derived J‐domains

FEBS Open Bio, EarlyView.
The malaria parasite Plasmodium falciparum exports three highly homologous yet functionally divergent J‐domain proteins into human erythrocytes. Here, we show that J‐domains isolated from all three proteins effectively stimulate the ATPase activity of both endogenous host and exported parasite HSP70 chaperones.
Julian Barth, Moritz Koch, Le‐Han Rössner, Johanna Eichhorn, Denys Pogoryelov, Matthias P. Mayer, Jude M. Przyborski   +6 more
wiley   +1 more source

Flutuação anual e interanual da riqueza de espécies de desmídias (Chlorophyta – Conjugatophyceae) em um lago de inundação amazônico de águas pretas (Lago Cutiuaú, Estado do Amazonas, Brasil) = Annual and interannual fluctuation of desmids species in a black water Amazon floodplain lake (Lago Cutiuaú, Amazonas State, Brazil)

Acta Scientiarum: Biological Sciences, 2009
Nesta pesquisa foi avaliada a flutuação sazonal e interanual da riqueza específica de desmídias ao longo de diferentes períodos do ciclo hidrológico de 2002 a 2004, em um lago de inundação de águas pretas da bacia do rio Negro, no Estado do Amazonas.
Sergio Melo, Karla Ferreira de Souza
doaj  

Incorporating human drivers and systems approaches into an ecological state-and-transition model framework

Environmental Research: Ecology
Ecology is the study of living organisms and their physical environment. Often, in an ecological modelling context, this has meant a lack of explicit consideration of human impacts on ecological systems, despite the clear influence humans have upon the ...
Katrina Szetey, Patrick Driver, James Furlaud, Sarah Luxton, Suzanne M Prober, Anna E Richards   +5 more
doaj   +1 more source