Results 71 to 80 of about 1,942,583 (286)

Structural studies and functional engineering of NanX: an anhydro‐sialic acid transporter from Escherichia coli

FEBS Open Bio, EarlyView.
Biophysical characterisation shows that NanX, a membrane transport protein from the major facilitator superfamily (MFS), forms both monomers and dimers after purification. AlphaFold modelling and substrate docking provide information on residues likely involved in substrate recognition for NanX and another MFS member, NanT.
Michael C. Newton‐Vesty, Kelsi R. Hall, Zachary D. Tillett, Liam S. Turk, James S. Davies, Michael J. Currie, Hamish G. Brown, Sepideh Valimehr, Peter D. Mace, Andrew E. Whitten, Santosh Panjikar, Eric Hanssen, Rachel A. North, Renwick C.J. Dobson   +13 more
wiley   +1 more source

Understanding the feasibility of pit lakes for tailings disposal and CO2 sequestration

Discover Geoscience
The pit lakes and tailings are one of major source of acid mine drainage (AMD) and metal contamination in the mining landscapes. The dissolution of metals from pit lakes in the close proximity to aquifers contaminate groundwater in the downstream.
Anita Punia, Saurabh Kumar Singh
doaj   +1 more source

Mining-Sequence Effects on Slope Deformation and Stress Redistribution During Cemented Backfill Mining of Multiple Extra-Thick Coal Seams Beneath an Open-Pit Highwall

Applied Sciences
Cemented backfill mining has become an effective approach for recovering coal resources beneath open-pit highwalls while maintaining slope stability. However, the repeated extraction of multiple extra-thick coal seams induces complex overburden responses,
Hao Yan, Leilin Jin, Haodong Wang, Haoran Wang, Rang Chen, Sheng Zhang   +5 more
doaj   +1 more source

Optimizing blast design and bench geometry for stability and productivity in open pit limestone mines using experimental and numerical approaches

Scientific Reports
Optimizing blast design and bench geometry is crucial for enhancing the safety, efficiency, and sustainability of open-pit mining operations. This study examines the effects of blast design and bench geometry adjustments on bench slope stability through ...
G. W. Deressa, B. Choudhary, N. Z. Jilo
semanticscholar   +1 more source

Structural and biochemical insights into the thermostable esterase Ta0887 from Thermoplasma acidophilum

FEBS Open Bio, EarlyView.
In this study, a novel esterase from the thermoacidophilic archaeon Thermoplasma acidophilum was biochemically and structurally characterized. Our results demonstrate that Ta0887 is a highly thermostable esterase that preferentially hydrolyzes p‐nitrophenyl hexanoate and possesses an α‐helical cap domain that likely contributes to its substrate ...
Alejandro Delgado‐Rey, Miriam Livier Llamas‐García, Gabriela M. Montero‐Morán, Leticia Santos, Samuel Lara‐González   +4 more
wiley   +1 more source

Biodiesel Production from Oils Extracted from Date Pits

Green and Sustainable Chemistry, 2017
Biodiesel production had received a considerable attention as a green, non-toxic and renewable alternative to petroleum diesel. To avoid using vegetable oils, which are expensive and compete with food, as feedstock, waste oils have been proposed. However, these waste materials contain a large amount of free fatty acids that complicates the production ...
Sulaiman Al-Zuhair, Hanifa Taher, Salama Al Dhaheri, Shereen Wajeeh, Mutasim Nour, Emad El-Najjar   +5 more
openaire   +2 more sources

Salmonella enterica serovar typhi limits the potency of typhoid toxin and ADP‐ribosylating toxin AB to establish a persistent infection

FEBS Open Bio, EarlyView.
The two catalytic subunits of typhoid toxin dissociate from the holotoxin in the ER of an intoxicated cell, but only CdtB exits the ER to generate immunosuppressive effects. PltA is retained in the ER and sequestered from its cytosolic target, thus allowing the anti‐inflammatory effects of CdtB to promote intestinal colonization.
Maria C. Zabala‐Rodriguez, Juliette K. Tinker, Teresa Frisan, Taj Azarian, Ken Teter   +4 more
wiley   +1 more source

Architecture of Lasinja culture settlements in the light of new investigations in northern Croatia

Documenta Praehistorica, 2011
The site of Beketinci, Bentež, stands out among Lasinja settlements as the site of the largest uncovered surface – the excavation at 30 900m2 revealed a portion of a Lasinja culture settlement.
Kornelija Minichreiter, Zorko Marković
doaj   +1 more source

Strength Deterioration Pattern and Stability Evaluation of Open−Pit Mine Slopes in Cold Regions Under Freeze–Thaw Cycles

Applied Sciences
With the gradual depletion of mineral resources in temperate regions, cold regions have become primary areas for mineral extraction. However, the freeze–thaw phenomena induced by temperature fluctuations pose significant threats to the stability of rock ...
Peng-Hai Zhang, Ning Gao, Wanni Yan, Jun Hou, Hong-Lei Liu   +4 more
semanticscholar   +1 more source

Characterization of the key membrane protein cytochrome Cyc2 from Ghiorsea bivora

FEBS Open Bio, EarlyView.
This study reports the first detailed biochemical analysis of Cyc2TAG1_1, a cytochrome protein involved in microbial iron oxidation. We produced and purified this enzyme in E. coli, then measured its iron‐oxidizing efficiency, and characterized its electrical and structural properties.
Josiane Azizi, Alain Dolla, Frauke Baymann, Celine Rommevaux, Latifa Elantak, Helene Gaussier, Matthieu Nouailler   +6 more
wiley   +1 more source