Results 131 to 140 of about 529,543 (309)

The pyruvate generator is a common phenomenon in mitochondria from different rat and mouse brain regions

open access: yesFEBS Letters, EarlyView.
The pyruvate generator, which causes activation of respiration by extra‐mitochondrial Ca2+, is also present and functional in rat brainstem mitochondria, as it is in other brain regions. This finding is confirmed by experiments with a fully reconstituted malate–aspartate shuttle (MAS).
Grazyna Debska‐Vielhaber   +7 more
wiley   +1 more source

Evolutionary Consequences of Sex Linkage and Sex-Specific Selection. [PDF]

open access: yes
Males and females make equal genetic contributions to each generation, yet each sex is exposed to different, sometimes opposing forces of natural and sexual selection.
Connallon, Timothy M.
core  

Shrub avoidance by an open-adapted ground squirrel in a shrub-encroached environment.

open access: yesPLoS ONE
Habitat loss and degradation are leading drivers of the widespread decline in wildlife populations, and understanding how wildlife perceive and navigate their environment is useful for predicting responses to future landscape changes.
Alexandra D Burnett, John L Koprowski
doaj   +1 more source

Consequences of selection for egg weight on hatchability [PDF]

open access: yesGenetics Selection Evolution, 1978
Flock DK, Mergl R, Pirchner F
openaire   +4 more sources

The ubiquitin‐proteasome system and autophagy as guardians of the cellular proteome

open access: yesFEBS Letters, EarlyView.
This Perspective covers the three principles governing the crosstalk between the ubiquitin‐proteasome system and autophagy in cellular proteostasis: (1) a shared ubiquitin code routing substrates via shuttle factors or autophagy receptors; (2) spatial compartmentalization into phase‐separated degradation hubs and organelle‐specific modules (exemplified
Ivan Dikic
wiley   +1 more source

Habitat-Selecting Life History

open access: yesFishes
Adaptive life histories emerge through their environmentally dependent effects on fitness. Those effects are consequences of habitat quality and the density-dependent decisions that organisms make on habitat choice. Density dependence for ideal organisms
Douglas W. Morris, Per Lundberg
doaj   +1 more source

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

open access: yesFEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Positive selection underlies Faster-Z evolution of gene expression in birds.

open access: yes, 2015
The elevated rate of evolution for genes on sex chromosomes compared to autosomes (Fast-X or Fast-Z evolution) can result either from positive selection in the heterogametic sex, or from non-adaptive consequences of reduced relative effective population ...
Zimmer, F   +4 more
core  

Ubiquitination of secretory granules promotes their crinophagic degradation in Drosophila

open access: yesFEBS Letters, EarlyView.
Ubiquitination of secretory granules in Drosophila larval salivary glands is a critical molecular trigger for crinophagy, the lysosomal degradation of unreleased, or low‐quality granules. The E3 ubiquitin ligase Cnot4 is recruited to the surface of secretory granules to induce crinophagy.
Tamás Csizmadia   +6 more
wiley   +1 more source

Selection in Insurance Markets: Theory and Empirics in Pictures [PDF]

open access: yes
We present a graphical framework for analyzing both theoretical and empirical work on selection in insurance markets. We begin by using this framework to review the “textbook” adverse selection environment and its implications for insurance allocation ...
Liran Einav, Amy Finkelstein
core  

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