Results 51 to 60 of about 5,161,500 (253)

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, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source

Pollination ecology of the invasive tree tobacco Nicotiana glauca: comparisons across native and non-native ranges [PDF]

, 2012
Interactions with pollinators are thought to play a significant role in determining whether plant species become invasive, and ecologically generalised species are predicted to be more likely to invade than more specialised species.
Ollerton, Jeff, Izhaki, Ido, Wilson, Ian, Shawn Connerty, Julia Lock, Leah Parker, Schueller, Sheila K., Andrea A. Cocucci, Stout, Jane C., Stout, Jane C, Cocucci, Andrea Aristides, Lock, Julia, Ian Wilson, Geerts, Sjirk, Nattero, Julieta, Jane C, Schueller, Sheila, Sheila K, Ido Izhaki, Stella Watts, Jeff Ollerton, Anton Pauw, Geerts, Sirjk, Pauw, Anton, Cocucci, Andrea A, Sjirk Geerts, Córdoba Xjjc Córdoba, Watts, Stella, Parker, Leah, Connerty, Shawn, Julieta Nattero   +30 more
core  

Do species differ in their ability to coexist with the dominant alien Lupinus polyphyllus? : A comparison between two distinct invaded ranges and a native range [PDF]

, 2013
The community-level impacts of invasive plants are likely to vary depending on the character of native species of the target communities and their ability to thrive within the stands of the dominant alien invader.
Martin Hejda, Hejda, Martin, Hejda,Martin   +2 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, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

Converting Chinese fir plantations into mixed stands: Effects of density on soil organic carbon mineralization and its temperature sensitivity

Trees, Forests and People
Converting monoculture plantations into mixed stands is a key strategy for enhancing soil carbon sequestration. The mechanisms behind soil organic carbon (SOC) turnover and its temperature response at different mixed densities are unclear.
Xiulan Zhang, Xiaocheng Song, Yongfeng Lou, Chunhui Leng, Jingjing Huang, Xingbin Cheng, Peng Yin, Xinchuan Zhu, Fuming Xiao   +8 more
doaj   +1 more source

Effect of explant type (leaf, stem) and 2,4-D concentration on callus induction: influence of elicitor type (biotic, abiotic), elicitor concentration and elicitation time on biomass growth rate and costunolide biosynthesis in gazania (Gazania rigens) cell suspension cultures

Bioresources and Bioprocessing, 2022
Gazania rigens (L.) Gaertn. (Asteraceae) is a medicinal plant with high ornamental potential and use in landscaping. The therapeutic potential of sesquiterpene lactones (SLs) as plant natural products for pharmaceutical development has gained extensive ...
Huda E. Mahood, Virginia Sarropoulou, Thiresia-Teresa Tzatzani   +2 more
doaj   +1 more source

Duck Productivity in Restored Species-Rich Native and Species-Poor Non-Native Plantings

PLoS ONE, 2013
Conservation efforts to increase duck production have led the United States Fish and Wildlife Service to restore grasslands with multi-species (3-5) mixtures of introduced cool season vegetation often termed dense nesting cover (DNC). The effectiveness of DNC to increase duck production has been variable, and maintenance of the cover type is expensive.
Haffele, Ryan, Eichholz, Michael E, Dixon, Cami S   +2 more
openaire   +4 more sources

Mountain roads shift native and non‐native plant species' ranges [PDF]

Ecography, 2016
Roads are known to act as corridors for dispersal of plant species. With their variable microclimate, role as corridors for species movement and reoccurring disturbance events, they show several characteristics that might influence range dynamics of both native and non‐native species.
Milbau, Ann, Nijs, Ivan, Rew, Lisa, Pauchard, Aníbal, Nuñez, Martín, Naylor, Bridgett, Mcdougall, Keith, Kueffer, Christoph, Lenoir, Jonathan, Haider, Sylvia, Cavieres, Lohengrin, Alexander, Jake, Lembrechts, Jonas   +12 more
openaire   +5 more sources

Impact scores of invasive plants are biased by disregard of environmental co-variation and non-linearity [PDF]

, 2011
Prioritisation of high-impact species is becoming increasingly important for management of introduced species (‘neobiota’) because of their growing number of which, however, only a small fraction has substantial impacts.
Jan Thiele, Kollmann,Johannes, Isermann,Maike, Thiele, Jan, Isermann, Maike, Johannes Kollmann, Otte, Annette, Thiele,Jan, Maike Isermann, Kollmann, Johannes,, Annette Otte, Otte,Annette, Kollmann, Johannes   +12 more
core   +1 more source

Invisible but not inaccessible—Revealing transient oligomers formed by intrinsically disordered proteins with solution NMR and complementary methods

FEBS Letters, EarlyView.
Transient oligomers formed by intrinsically disordered proteins may be ‘invisible’ to direct detection yet remain accessible to solution NMR through equilibrium‐exchange measurements and pressure‐jump experiments. Complementary methods report on mass, stoichiometry, selected distance distributions, morphology, and internal packing.
Martin D. Gelenter, Ad Bax
wiley   +1 more source