Results 91 to 100 of about 3,421,347 (332)

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source

Global patterns and determinants of lake macrophyte taxonomic, functional and phylogenetic beta diversity.

Science of the Total Environment, 2020
Documenting the patterns of biological diversity on Earth has always been a central challenge in macroecology and biogeography. However, for the diverse group of freshwater plants, such research program is still in its infancy.
Jorge García–Girón, J. Heino, Lars Baastrup‐Spohr, C. Bove, J. Clayton, M. de Winton, T. Feldmann, M. Fernández‐Aláez, F. Ecke, P. Grillas, M. Hoyer, Agnieszka Kolada, S. Kosten, B. Lukács, M. Mjelde, R. Mormul, L. Rhazi, M. Rhazi, Laura Sass, Jun Xu, J. Alahuhta   +20 more
semanticscholar   +1 more source

Archipelago reserves, a new option to protect montane entomofauna and beta-diverse ecosystems

Revista Mexicana de Biodiversidad, 2018
Beta diversity is often a dominant characteristic in mountain systems and naturally fragmented ecosystems. However, natural protected areas are traditionally designed to protect ecosystems with high alpha and low beta diversity.
Victor Moctezuma, Gonzalo Halffter, Alfonsina Arriaga-Jiménez   +2 more
doaj   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Edge contrast does not modulate edge effect on plants and pollinators [PDF]

, 2018
Edge contrast, is one of the main determinants of edge effects. This study examines the response of plant and pollinator diversity (bees and butterflies) to forest edge contrast, i.e.
Alard, Didier, Alignier, Audrey, Andrieu, Émilie, Archaux, Frédéric, Bailey, Samantha, Barbaro, Luc, Bouget, Christophe, Cabanettes, Alain, Corcket, Emmanuel, Deconchat, Marc, Ouin, Annie, Van Halder, Inge, Vigan, Martin, Villemey, Anne   +13 more
core   +3 more sources

Once again on the components of pairwise beta diversity [PDF]

Ecological Informatics, 2016
Abstract Presence–absence based beta diversity defined for pairs of sites may be partitioned into components following two different ways of thinking. Within the framework of Baselga (abbreviated hereafter as BAS), nestedness is crucial and dissimilarity is partitioned into replacement (turnover) and nestedness-resultant fractions.
János Podani, Dénes Schmera
openaire   +2 more sources

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

FEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

Taxonomic and Functional Beta Diversity Patterns and Their Driving Factors of the Fish Assemblages Around Marine Islands

Journal of Marine Science and Engineering
Beta diversity is an important way to analyze community assembly mechanisms in different habitats or along environmental gradients. However, research on marine fish assemblages around islands has lagged, especially for functional beta diversity.
Guangjie Fang, Jun Liang, Rijin Jiang, Yazhou Zhang, Junlin Chen, Chuanxi Chen, Mingda Yang, Yongdong Zhou   +7 more
doaj   +1 more source

Fast Computations for Measures of Phylogenetic Beta Diversity

PLOS ONE, 2016
For many applications in ecology, it is important to examine the phylogenetic relations between two communities of species. More formally, let [Formula: see text] be a phylogenetic tree and let A and B be two samples of its tips, representing the examined communities.
Tsirogiannis, Constantinos, Sandel, Brody   +1 more
openaire   +5 more sources

Additive partitioning of a beta diversity index is controversial [PDF]

Proceedings of the National Academy of Sciences, 2015
A recent study (1) reports the spatial clustering patterns of the global distribution of human infectious diseases. However, there are some controversial issues that arise from the beta diversity partitioning method used in the paper. To further debate these issues, we follow the same notations in the paper (1) by writing the Sorensen beta diversity ...
Youhua, Chen, Dénes, Schmera
openaire   +2 more sources