Results 91 to 100 of about 6,227,014 (305)
Structural and biochemical analysis of a B12 superbinder
FEBS Letters, EarlyView.BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices +3 more
wiley +1 more source
Testing environmental and health pesticide use risk indicators. The case of potato production in Boyacá, Colombia [PDF]
Tropentag 2010 ETH Zurich, September 14 - 16, 2010 Conference on International Research on Food Security, Natural Resource Management and Rural Developmentpesticide risk, indicators, sustainability, health, environment, Colombia, Crop Production ...
Rahn, Eric +2 more
core
, 2014 The rapid growth of population in cities places great pressure on urban ecosystem health and management, especially on urban water supply and disposal of wastewater.
Hayat, T. +7 more
core +1 more source
, 1992 The report discusses possible logical structures and content of a set of environmental indicators for Norway. The emphasis is on structure; proposals for specific indicators and data presented are of a more preliminary nature.
Alfsen, Knut H. +5 more
openaire +3 more sources
Indicadores sintéticos de calidad ambiental: un modelo general para grandes zonas urbanas
EURE (Santiago) - Revista Latinoamericana de Estudios Urbano Regionales, 2006 En este artículo se define el índice de calidad ambiental (ICA) como una variable latente determinada por un conjunto de factores que lo afectan de manera positiva y negativa. Partimos de la hipótesis de la no homogeneidad ambiental del territorio urbano,
Luis Escobar
doaj
Chemical and microbiological properties of an eutrophic Oxisol under riparian forest buffer reforestation and pasture. Propriedades químicas e microbiológicas de um Latossolo Vermelho eutrófico sob reflorestamento de mata ciliar e pastagem. [PDF]
Revista do Instituto Florestal, 2013 Regardless of their ecological importance, riparian forest strips are frequently suppressed to allow greater expansion of arable and urban areas. Agroforestry might be an effective alternative to recompose riparian forests.
Fabiana Marise PULITANO +3 more
doaj
FEBS Letters, EarlyView.How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley +1 more source
A report on Canada's progress towards a national set of environmental indicators
, 1991 Environmental indicators are important tools for translating quantities of environmental data into succinct information that can be readily understood and used by decision makers and the general public.
Indicators Task Force, Environment Canada
core
Biological Populations as Indicators of Environmental Change - Volume 1
, 1992 148 pages; available for download at the link below.This report, "Biological Populations as Indicators of Environmental Change - Volume 1" is a review of scientific literature on biological phenomena frequently noted in the popular press, to determine ...
United States Environmental Protection Agency Office of Policy, Planning and Evaluation
core +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 +6 more
wiley +1 more source