Results 91 to 100 of about 1,832,592 (294)
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.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
Početnosť a rozšírenie kuvika obyčajného (Athene noctua) v Rimavskej kotline (južné Slovensko) / The abundance and distribution of Little Owl (Athene noctua) in Rimavská kotlina Basin (S Slovakia) [PDF]
Tichodroma, 2018 The abundance and distribution of Little Owl was monitored in Rimavská kotlina Basin (central Slovakia) in the years 2015–2017 using visual observations, recording of spontaneous calls and playback of male territorial calls.
Monika GÁLFFYOVÁ
doaj
Designing a shipboard line transect survey to estimate cetacean abundance off the Azores Archipelago, Portugal [PDF]
, 2009 Revised version November 2008. MRes in Marine Mammal ScienceManagement schemes dedicated to the conservation of wildlife populations rely on the effective monitoring of population size, and this requires the accurate and precise estimation of abundance ...
Faustino, Cláudia Estevinho Santos
core +2 more sources
, 2021 (A) Considering the whole time period for the 15 species, ϵ is the slope of the Zipf’s law (on pdf) of species abundance (see Fig 3) and OTE is the sum of all interactions of a species (that is how much one species influences the collective on average ...
Matteo Convertino (126877) +1 more
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
Ribogospodarsʹka Nauka Ukraïni, 2019 Purpose. Based of literature data, in chronological order, to compose a list of leading scientists who investigated phytoplankton in the middle part of the River Dnipro, which, after the construction of the Dniprostan dam, became the Dnipro (Zaporizhzhia)
O. Fedonenko, Yu. Nikolenko
doaj +1 more source
The effects of acoustic misclassification on cetacean species abundance estimation [PDF]
, 2013 This work was funded through the Natural Environment Research Council and SMRU Ltd.To estimate the density or abundance of a cetacean species using acoustic detection data, it is necessary to correctly identify the species that are detected.
Caillat, Marjolaine Annie +7 more
core +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
Estimating bird abundance : making methods work [PDF]
, 2008 In many bird monitoring Surveys, no attempt is made to estimate bird densities or abundance. instead, counts of one form or another are made, and these are assumed to correlate with bird density. Unless complete Counts Oil Sample plots are feasible, this
Marsden, Stuart J. +3 more
core +1 more source