Results 101 to 110 of about 6,005,558 (266)

Characterization of Nanoparticles: Measurement Processes for Nanoparticles : Characterization of nanomaterials by transmission electron microscopy: Measurement procedures

, 2020
Description Characterization of Nanoparticles: Measurement Processes for Nanoparticles surveys this fast growing field, including established methods for the physical and chemical characterization of nanoparticles.
J. Mast, R. Kaegi, V.D. Hodoroaba, E. Verleysen   +3 more
core  

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

Unravelling the molecular mechanisms of tetraspanin CD9 [PDF]

, 2019
This thesis focuses on a family of membrane proteins, called tetraspanins. As molecular facilitators, tetraspanins maintain the plasma membrane integrity by interacting with each other or with other macromolecules. If these master organizers are missing,
Sub Crystal and Structural Chemistry, Crystal and Structural Chemistry, Neviani, Viviana   +2 more
core  

Molecular and immunological characterization of profilin from mugwort pollen [PDF]

, 2002
In late summer in Europe, pollen of mugwort is one of the major sources of atopic allergens. No information about the complete molecular structure of any mugwort allergen has been published so far.
Briza, P., Richter, K., Ebner, Christof, Willeroidee, Marika, Briza, Peter, van Ree, Ronald, Richter, Klaus, Willeroider, M., Aalbers, Marja, Wopfner, Nicole, Wopfner, N., Ferreira, F., Aalbers, M., Ebner, C., Thalhamer, Josef, Ferreira, Fatima, Hebenstreit, Daniel, Thalhamer, J., Ree, R. van   +18 more
core   +1 more source

Purification, Structural Characterization, and Immunomodulatory Activity of an Exopolysaccharide from Acetilactobacillus jinshanensis BJ01 in Baijiu Fermentation Grains

Foods
This study aims to identify the chemical structure and immunomodulatory activity of exopolysaccharides (EPSs) from Acetilactobacillus jinshanensis BJ01 and suggest its potential applications in the pharmaceutical field and as functional food additives ...
Tian Tian, Bo Wan, Ying Xiong, Han Wang, Yuanyuan An, Ruijie Gao, Pulin Liu, Mingchun Zhang, Lihong Miao, Weifang Liao   +9 more
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

Isolation, Purification, Structural Characterization, and in Vitro Lipid-lowering Activity of Evodia rutaecarpa Polysaccharides

Shipin gongye ke-ji
To explore the structural characteristics of Evodia rutaecarpa polysaccharide and its lipid-lowering potential in vitro, Evodia rutaecarpa crude polysaccharide (WPER) was extracted by microwave-assisted extraction technique.
Yongjin SUN, Huimei ZENG, Jing HUANG, Yunlong ZHAO, Jinyuan CAI, Song SUN   +5 more
doaj   +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

Preparation, Structural Characterization and Digestive Properties of Zinc Chelates of Takifugu rubripes Bone Collagen Peptide

Shipin gongye ke-ji
In order to develop a novel zinc supplement and broaden the application field of redfin puffer, in this study, redfin oriental leatherback fish bone was used as raw material and ZnSO4·7H2O as zinc source.
Lei HUANG, Jilu SUN, Juntian GAN, Fanyu WANG, Caixuan ZHANG, Hai'en ZHANG, Mingzhu GUO   +6 more
doaj   +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