Results 51 to 60 of about 478,190 (263)
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
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 +2 more
wiley +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
Evaluation of Irrigation Water Quality and Agricultural Suitability of Kuzgun Dam Water
ISPEC Journal of Agricultural SciencesThe aim of this study is to evaluate the irrigation water quality of Kuzgun Dam, which supplies water to the agricultural lands of Daphan Plain, located in Erzurum Province, Türkiye. Water samples were collected from seven different locations within the
Hasan ER
doaj +1 more source
Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers
FEBS Letters, EarlyView.Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui +4 more
wiley +1 more source
Evaluation of Groundwater Quality Using Water Quality Indices in Parts of Lagos-Nigeria
Journal of Environmental Geography, 2013 Water samples collected from forty-five hand dug wells and thirteen boreholes using random sampling technique were measured for pH, electrical conductivity and total dissolved solids.
Akoteyon Isaiah S.
doaj +1 more source
Effect of metsulfuron-methyl on water quality for fish culture using water quality index
The Indian Journal of Agricultural Sciences, 2014 Field and laboratory experiments were conducted to evaluate the effects of herbicide on water quality through water quality index (WQI). WQI was derived to see the suitability of water in term of its quality for fishery.
SHOBHA SONDHIA +2 more
doaj +1 more source
WATER QUALITY INDEX PREDICTION
international journal of engineering technology and management sciencesWater is perhaps the most precious natural resource after air. Though the surface of the earth mostly consists of water, only a small part of it is usable, which makes this resource limited. This Precious and limited resource, therefore, must be used with care.
null S V HEMANTH +2 more
openaire +1 more source
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 +3 more
wiley +1 more source
Revisión de parámetros fisicoquímicos como indicadores de calidad y contaminación del agua
Ingeniería e Investigación, 2007 Con el fin de facilitar la interpretación de los datos físicos, químicos y biológicos, cada vez más agencias medio-ambientales, universidades e institutos recurren a los indices de calidad y contaminación del agua (ICA e ICO), los cuales mediante una ...
Natalia Eugenia Samboni Ruiz +2 more
doaj