Results 151 to 160 of about 182,849 (238)

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

Estados límites de servicio

, 1992
Este artículo intenta informar sobre l a última versión del EC4, en relación con el diseño y construcción de estructuras mixtas. Se centra, especialmente, en el capítulo dedicado a los estados límites de servicio e intenta no sólo explicar el contenido ...
Corres Peiretti, Hugo, Mirambell Arrizabalaga, Enrique   +1 more
core  

Evaluation of practices for the diagnosis and monitoring of cytomegalovirus infection in kidney transplant recipients in Brazil. [PDF]

J Bras Nefrol
Hatem NA, Keitel E, Santoro-Lopes G, Pierrotti LC, Pasqualotto AC.   +4 more
europepmc   +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

Echocardiographic Reference Values: Why Brazil Needs to Speak With its Own Voice. [PDF]

Arq Bras Cardiol
Barbosa ICQ, Feitosa INA.
europepmc   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

FEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +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

El problema de límites entre los estados Aragua y Guárico

, 2019
La presente investigación, está comprendida en el área de la geografía política; particularmente al caso del problema de límites políticos-territoriales entre los estados Aragua y Guárico.
Quezada F., Mairelys
core  

Persistent spatial hotspots and socioeconomic inequalities of snakebite envenoming in Peru: A nationwide spatiotemporal analysis, 2010-2025. [PDF]

PLoS Negl Trop Dis
Grados Vásquez M, Guerra Blas JC, Salcedo-Prudencio A, Santos Siqueira T, Monteiro W, Amaya Parra JA, Martinez-Espinosa FE.   +6 more
europepmc   +1 more source

Prospecting the protein design landscape

FEBS Letters, EarlyView.
This review outlines the current state of various protein design approaches. We discuss the current possibilities enabled by recently released tools, highlight future avenues to pursue in protein design, and underscore the crucial role of key databases and resources for successful protein design workflows.
Jakob R. Riccabona, Katharina T. Stonig, Jens Meiler, Clara T. Schoeder, Monica L. Fernández‐Quintero   +4 more
wiley   +1 more source