Results 51 to 60 of about 14,945,351 (305)

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

Xenolith Constraints on the Mantle Potential Temperature and Thickness of Cratonic Roots Through Time

Geophysical Research Letters
The temperature of the convecting mantle and thickness of the lithosphere control many of Earth's processes. However, there is disagreement regarding the evolution of these quantities through time.
Z. J. Sudholz, A. Copley
doaj   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

FEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav, Bogdan I. Florea, Sebastian Geibel   +2 more
wiley   +1 more source

Adaptive responses to temperature and photoperiod in neuromuscular transmissionin carcinus maenas (l) [PDF]

, 2004
Neuromuscular synaptic transmission in the ectothermal crab Carcinus maenas was used to assess the extent to which photoperiod affected the attainment of temperature acclimation.
Qari, Suhaila
core  

Reconciling the Discrepancies of Equivalent Potential Temperatures in Atmosphere: A General Pathway Rooted in Entropy Conservation

Journal of Advances in Modeling Earth Systems
Equivalent potential temperature is a widely used thermodynamic variable in atmospheric science. However, various formulations have been proposed in the literature over the last one and half‐century but their differences and connections are not ...
Jian‐Feng Gu, Zhe‐Min Tan
doaj   +1 more source

TDEP: Temperature Dependent Effective Potentials

Journal of Open Source Software
The Temperature Dependent Effective Potential (TDEP) method is a versatile and efficient approach to include temperature in ab initio materials simulations based on phonon theory. TDEP can be used to describe thermodynamic properties in classical and quantum ensembles, and several response properties ranging from thermal transport to Neutron and Raman ...
Florian Knoop, Nina Shulumba, Aloïs Castellano, J. P. Alvarinhas Batista, Roberta Farris, Matthieu J. Verstraete, Matthew Heine, David Broido, Dennis S. Kim, Johan Klarbring, Igor A. Abrikosov, Sergei I. Simak, Olle Hellman   +12 more
openaire   +5 more sources

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

Comparisons of the Generalized Potential Temperature in Moist Atmosphere with the Equivalent Potential Temperature in Saturated Moist Atmosphere

Advances in Meteorology, 2009
The real tropospheric atmosphere is neither absolutely dry nor completely saturated. It is in general moist but not saturated. Here the generalized potential temperature (GPT) was introduced to describe this humid feature of real moist atmosphere.
Yushu Zhou, Liping Liu, Guo Deng
doaj   +1 more source

Effect of Temperature and Water Potential on Sprout Vigor of Potato (Solanum tuberosum L.) Seed Tuber

International Journal of Agriculture System, 2015
A study was conducted to examine sprouting on potato seed tuber over a range of different temperature and moisture conditions. The Experiment was conducted under controlled environment conditions using a Terratec thermo-gradient table at the School of ...
Ifayanti Ridwan, Phil H. Brown, Shaun N. Lisson, Cri Wahyuni   +3 more
doaj   +1 more source

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

FEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui, Agnes Banreti, Armelle L. Ernst, Guillaume Leseigneur, Uwe J. Meierhenrich   +4 more
wiley   +1 more source