Results 111 to 120 of about 449,878 (299)

The unseen world: environmental microbial sequencing and identification methods for ecologists [PDF]

open access: yes, 2014
Archaea, bacteria, microeukaryotes, and the viruses that infect them (collectively “microorganisms”) are foundational components of all ecosystems, inhabiting almost every imaginable environment and comprising the majority of the planet’s organismal and ...
Aronson, Emma   +4 more
core   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Taxonomic and functional diversities reveal different fish assemblage dynamics of stow net fishery in Haizhou Bay

open access: yesHeliyon
Biodiversity is the cornerstone of marine fisheries. To ensure the prosperity of stow net fishery in Haizhou Bay, regular investigations of fishery resources are essential.
Guangjie Fang   +5 more
doaj   +1 more source

Phylogenetic measures applied to the conservation of Mexican marsupials

open access: yesRevista Mexicana de Biodiversidad, 2015
The didelphimorphs in Mexico are found all over the country except for the Baja California Peninsula. The aim of this study was to use three methods to assess the phylogenetic diversity of the species: Marmosa mexicana, Tlacuatzin canescens, Caluromys ...
Irene Goyenechea
doaj   +1 more source

Taxonomic diversity gradients through geological time

open access: yesDiversity and Distributions, 2001
Abstract. There is evidence from the fossil record to suggest that latitudinal gradients in taxonomic diversity may be time‐invariant features, although almost certainly not on the same scale as that seen at the present day. It is now apparent that both latitudinal and longitudinal gradients increased dramatically in strength through the Cenozoic era ...
openaire   +2 more sources

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

open access: yesFEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel   +13 more
wiley   +1 more source

Patterns and drivers of waterbird alpha and beta diversity are different between arid and humid regions of China

open access: yesAvian Research
Waterbirds are vital for wetland ecosystems, but climate change and human activities are harming these habitats globally, reducing biodiversity and threatening waterbird survival. In China, wetlands in humid and arid regions face quite different threats,
Zhuoen Liu   +6 more
doaj   +1 more source

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

open access: yesFEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura   +2 more
wiley   +1 more source

A new proposed measure for estimating taxonomic diversity

open access: yesTurkish Journal of Forestry, 2018
Recently, Deng Entropy has been received attention and began to use in many real application. That entropic measure was improved in the Dempster-Shafer Evidential Theory (DSET) and based on the basic probability assignment. The present study offers a new
Kürşad ÖZKAN
doaj   +1 more source

Home - About - Disclaimer - Privacy