Results 181 to 190 of about 11,998 (252)

Structural insights into θ‐type carbonic anhydrases 3 and 4: Tuning the directionality of CO2 hydration in a diatom

open access: yesThe FEBS Journal, EarlyView.
θ‐CA3 from a marine diatom has an N‐terminal transmembrane helix and two homologous catalytic domains. The enzyme functions as a dimer, with active sites formed near the dimer interface. A bicarbonate ion binds on the symmetry axis of the dimer and forms hydrogen bonds with both monomers, thereby activating θ‐CA3 and tuning CO2 hydration activity ...
Hiroto Negoro   +5 more
wiley   +1 more source

Spatial distribution of selected coastal Sabkhas along the Southern Red Sea Coast of Egypt. [PDF]

open access: yesSci Rep
Younis NA   +4 more
europepmc   +1 more source

Time‐stressed Bar‐tailed Godwits exploit novel prey during migratory fuelling

open access: yesIbis, EarlyView.
Long‐distance migratory birds breeding in the Arctic face challenges as earlier snowmelt shifts the timing of vital resources. To keep up with these advancements, birds will need to modify their migration. Higher fuelling rates during stopover have been identified as a critical mechanism for accelerating migration, but this requires adequate food ...
Hailley Danielson‐Owczynsky   +4 more
wiley   +1 more source

Exploration speed in Red Knots affects spring migration timing, but only after experimentally constrained fuelling conditions

open access: yesIbis, EarlyView.
Individual variation in avian migration timing is still poorly understood, yet recent evidence shows that it is closely linked to personality traits and may also be affected by food availability. Here, we examined how the interaction of the personality trait exploration speed and food availability affected the departure timing of Red Knots Calidris ...
Tohar Tal   +4 more
wiley   +1 more source

Compound flood simulations indicate rising public exposure to sewage-contaminated waters in Waikīkī, Hawai'i. [PDF]

open access: yesSci Rep
Yamamoto K   +7 more
europepmc   +1 more source

Methionine Regulates Antitumour Function of CD8+ T Cells Through Polyamine Synthesis

open access: yesImmunology, EarlyView.
Methionine restriction in vitro enhances CD8+ T cell effector function by suppressing polyamine synthesis and progressively induces the co‐expression of PD‐1 and TIM‐3. Consistently, sustained dietary methionine restriction diminishes the efficacy of adoptive T cell therapy (ACT) and promotes the expression of terminal exhaustion‐associated markers ...
Tian Zhao   +16 more
wiley   +1 more source

Mussels enhance digestive enzyme activity in preparation for stressful fluctuating environments. [PDF]

open access: yesJ Comp Physiol B
James Bond JA   +10 more
europepmc   +1 more source

Do the biological characteristics of trout (Salmo trutta) smolts influence their spring migration timing and maiden marine sojourn duration?

open access: yesJournal of Fish Biology, EarlyView.
Abstract Anadromous salmonids migrate seaward to exploit feeding and growth opportunities in marine habitats, yet how smolt biological characteristics influence their marine migratory behavior remains poorly understood. This study used 9 years of trout (Salmo trutta) population monitoring data from 15,595 tagged age‐0+ parr, 1033 smolts detected ...
Jonathan P. Gillson   +11 more
wiley   +1 more source

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