Results 51 to 60 of about 516,254 (299)

On the impact of dispersal asymmetry on metapopulation persistence

, 2010
Metapopulation theory for a long time has assumed dispersal to be symmetric, i.e. patches are connected through migrants dispersing bi-directionally without a preferred direction. However, for natural populations symmetry is often broken, e.g.
Jonsson, Per R., Kleinhans, David
core   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

Stratified dispersal and increasing genetic variation during the invasion of Central Europe by the western corn rootworm, Diabrotica virgifera virgifera [PDF]

, 2010
Invasive species provide opportunities for investigating evolutionary aspects of colonization processes, including initial foundations of populations and geographic expansion.
Anonymous, Baufeld, Benjamini, Bialozyt, Boriani, Ciosi, Ciosi, Coats, Coombs, Corander, Corander, Cornuet, Davies, Drake, Edmonds, Edwards, Elam, Estoup, Evanno, Excoffier, Falush, Fisher, Gaggiotti, Genton, Grant, Gray, Guillot, Guillot, Hallatschek, Hallatschek, Hubisz, Ibrahim, Isard, Johnson, Kim, Kim, Kirkpatrick, Kiss, Klopfstein, Le Corre, Metcalf, Miller, Miller, Moody, Nei, Olden, Onstad, Paetkau, Pascual, Petit, Pimentel, Piry, Pritchard, Pritchard, Pritchard, Prugnolle, R Development CoreTeam, Rannala, Raymond, Raymond, Ripka, Roman, Rosenberg, Rousset, Ruiz, Sax, Shigesada, Sivcev, Sivcev, Slatkin, Sokal, Spencer, Sunnucks, Voisin, Weir, Williams   +75 more
core   +4 more sources

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

FEBS 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, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

A framework for understanding how biodiversity patterns unfold across multiple spatial scales in urban ecosystems

Ecosphere, 2021
Whether cities are more or less diverse than surrounding environments, and the extent to which non‐native species in cities impact regional species pools, remain two fundamental yet unanswered questions in urban ecology.
Christopher M. Swan, Bryan Brown, Dorothy Borowy, Jeannine Cavender‐Bares, Alienor Jeliazkov, Sonja Knapp, Zdeňka Lososová, Josep Padullés Cubino, Sandrine Pavoine, Carlo Ricotta, Daniel Sol   +10 more
doaj   +1 more source

Aggressive prostate cancer is associated with pericyte dysfunction

Molecular Oncology, EarlyView.
Tumor‐produced TGF‐β drives pericyte dysfunction in prostate cancer. This dysfunction is characterized by downregulation of some canonical pericyte markers (i.e., DES, CSPG4, and ACTA2) while maintaining the expression of others (i.e., PDGFRB, NOTCH3, and RGS5).
Anabel Martinez‐Romero, Ane Martinez‐Larrinaga, Joaquim Grego‐Bessa, Saioa Garcia‐Longarte, Hielke van Splunder, Ianire Astobiza, Amaia Ercilla, Laura Bozal‐Basterra, Isabel Mendizabal, Pilar Villacampa, Arkaitz Carracedo, Mariona Graupera   +11 more
wiley   +1 more source

Use of Lagrangian simulations to hindcast the geographical position of propagule release zones in a Mediterranean coastal fish [PDF]

, 2018
The study of organism dispersal is fundamental for elucidating patterns of connectivity between populations, thus crucial for the design of effective protection and management strategies.
Calo A., Garcia-Charton J. A., Lett C., Mourre B., Perez-Ruzafa A.   +4 more
core   +1 more source

Factorial Dispersion Models

International Statistical Review / Revue Internationale de Statistique, 1987
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Speed, T. P., Bailey, R. A.
openaire   +2 more sources

Peroxidasin enables melanoma immune escape by inhibiting natural killer cell cytotoxicity

Molecular Oncology, EarlyView.
Peroxidasin (PXDN) is secreted by melanoma cells and binds the NK cell receptor NKG2D, thereby suppressing NK cell activation and cytotoxicity. PXDN depletion restores NKG2D signaling and enables effective NK cell–mediated melanoma killing. These findings identify PXDN as a previously unrecognized immune evasion factor and a potential target to improve
Hsu‐Min Sung, David Bickel, Lena C. M. Krause, Daria Ezeriņa, Christian Ickes, Julian Wojtachnia, Christine S. Gibhardt, Magdalena Shumanska, Khadija Wahni, Andrea Paluschkiwitz, Julia Malo Pueyo, Ekaterina Baranova, Wim Vranken, Hedwig Stanisz, Ioana Stejerean‐Todoran, Michael P. Schön, Joris Messens, Ivan Bogeski   +17 more
wiley   +1 more source

Estimating dispersal and gene flow in the neotropical freshwater turtle Hydromedusa maximiliani (Chelidae) by combining ecological and genetic methods

Genetics and Molecular Biology, 2002
Hydromedusa maximiliani is a vulnerable neotropical freshwater turtle endemic to mountainous regions of the Atlantic rainforest in southeastern Brazil.
Franco L. Souza, Anderson F. Cunha, Marcos A. Oliveira, Gonçalo A.G. Pereira, Sérgio F. dos Reis   +4 more
doaj   +1 more source