Results 51 to 60 of about 3,194 (298)

AMS radiocarbon data of organic material from the ice wedges and paleo-winter temperature reconstructions obtained from stable water isotope records of the Batagay syngenetic ice wedges [PDF]

open access: yes
The Batagay megaslump is the largest one on the Earth and located close to the Batagay settlement on the right bank of the Yana River in Yakutia, eastern Siberia.
Vasil'chuk, Jessica Yurevna   +3 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

Radiocarbon Dating and Oxygen Isotope Variations in Late Pleistocene Syngenetic Ice-Wedges, Northern Siberia [PDF]

open access: yes, 2020
The occurrence of well-preserved redeposited organic material is the main limitation for radio-carbon dating of syngenetic permafrost sediments. Only radiocarbon dating of (1) auto-chthonous organic remains or (2) a series of non-inverted radiocarbon ...
Vasil'chuk, Yurij K   +1 more
core   +1 more source

Isotopic composition of oxygen (δ18О) and hydrogen (δD) of ice-wedge ice in central Yamal Peninsula [PDF]

open access: yes, 2021
A new data on the isotope composition of oxygen (δ18О) and hydrogen (δD) of the ice-wedge ice in central Yamal Peninsula near Bovanenkovo gas field are presented.
Babkin, Evgeniy   +2 more
core   +1 more source

Numerical Assessments of Excess Ice Impacts on Permafrost and Greenhouse Gases in a Siberian Tundra Site Under a Warming Climate

open access: yesFrontiers in Earth Science, 2021
Excess ice that exists in forms such as ice lenses and wedges in permafrost soils is vulnerable to climate warming. Here, we incorporated a simple representation of excess ice in a coupled hydrological and biogeochemical model (CHANGE) to assess how ...
Hotaek Park   +4 more
doaj   +1 more source

Septin 9 PB domains coordinate centrosome positioning and microtubule acetylation to control epithelial polarity

open access: yesFEBS Letters, EarlyView.
Septin 9 polybasic domains couple phosphoinositide‐rich membrane binding to centrosome positioning, Golgi organization, and microtubule acetylation to control epithelial polarity. Their loss disrupts this axis, causing centrosome mispositioning, Golgi fragmentation, reduced microtubule acetylation, and polarity inversion via upregulation of the ...
Ting ting Cai   +4 more
wiley   +1 more source

Electron transfer between complexes III and IV in S. cerevisiae mitochondrial membranes

open access: yesFEBS Letters, EarlyView.
Mitochondrial oxidative phosphorylation in S. cerevisiae mitoplasts is limited by complex IV catalytic capacity, rather than two‐dimensional cytochrome c diffusion. At physiological cytochrome c : supercomplex ratios at salinity equivalent to that of 20 mm monovalent salt, activity is maximized, indicating that this low ionic strength accurately mimics
Ana Paula Lobez   +2 more
wiley   +1 more source

Radiocarbon age, stable isotope composition of Holocene ice wedges and mean January air temperatures in the Kolyma Lowland region [PDF]

open access: yes, 2022
Ice wedges visible in natural alas and floodplain exposures have been studied in 1983-2018 years in the Kolyma Lowland region. Most ice wedges have been found within alases dated between 11 and 4.2 cal kyr BP, corresponding to the Greenlandian and ...
Vasil'chuk, Yurij K   +1 more
core   +1 more source

ABL kinase‐dependent phosphorylation of SH proteins promotes their direct interaction with CRK family SH2 domains

open access: yesFEBS Letters, EarlyView.
CT10 regulator of kinase (CRK) and CRK‐Like (CRKL) are signaling adaptors driving cell adhesion, motility, differentiation, and proliferation. SH2‐domain containing (SH) proteins are enriched in YXXP motifs which when phosphorylated create preferred binding sites for CRK family SH2 domains.
Phoebe M. Cousens   +8 more
wiley   +1 more source

Radiocarbon dating of samples of ice wedges near the village of the Baydarata Bay [PDF]

open access: yes
The main purpose of this work is to establish the formation time of Holocene syngenetic ice wedges that have been exposed on the coast of Baydarata Bay near the village of Yarynskaya, 500 m to the southeast from the mouth of the Ngarka-Tambyakha River ...
Vasil'chuk, Jessica Yurevna   +5 more
core   +1 more source

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