Results 91 to 100 of about 5,847,752 (237)

DIESEL CHARACTERIZATION BY HIGH RESOLUTION MASS SPECTROMETRY-GAS CHROMATOGRAPHY

open access: yesCT&F Ciencia, Tecnología & Futuro, 1998
High-resolution mass spectrometry-gas chromatography is combined with the HC22 method in order to obtain a detailed information about the chemical composition of diesel and the distribution of different compound types in terms of its final boiling ...
C.A BALDRICHF
doaj  

Structural and biochemical analysis of a B12 superbinder

open access: yesFEBS 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   +3 more
wiley   +1 more source

Integrative Mass Spectrometry Approaches to Monitor Protein Structures, Modifications, and Interactions [PDF]

open access: yes, 2017
This thesis illustrates the current standing of mass spectrometry (MS) in molecular and structural biology. The primary aim of the herein described research is to facilitate protein characterization by combining mass spectrometric methods among each ...
Lössl, P.   +2 more
core  

Charge ratio analysis method to interpret high resolution electrospray Fourier transform—ion cyclotron resonance mass spectra

open access: yes, 2005
The charge ratio analysis method (CRAM) is a new approach for the interpretation of high resolution Fourier transform ion cyclotron resonance (FT-ICR) electrospray mass spectral data.
M. Downard, Kevin, Maleknia, Simin
core   +1 more source

APPLICATION OF FTICR MASS SPECTROMETRY FOR THE IDENTIFICATION OF POLAR COMPOUNDS IN ITALIAN CRUDE OIL [PDF]

open access: yes, 2006
The use of the crude oil as primary source for the energy oblige necessarily the characterization of this matrix to the aim to estimate the impact in several contexts: productive and environmental.
LELARIO, FILOMENA   +4 more
core   +1 more source

Assessing Human Treg Suppression at Single-Cell Resolution Using Mass Cytometry

open access: yesBio-Protocol
Regulatory T cells (Tregs) are essential for maintaining immune balance by controlling the activation and expansion of other immune cells. Conventional suppression assays often rely on co-culturing purified cell populations, which limits multiplexed ...
Jonas Søndergaard   +4 more
doaj   +1 more source

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

open access: yesFEBS 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   +2 more
wiley   +1 more source

Lipids in Clinical Nutrition and Health: Narrative Review and Dietary Recommendations

open access: yesFoods
Lipids are essential components of human health, serving as critical structural elements of cell membranes, energy sources, and precursors for bioactive molecules.
Adrian Frydrych   +3 more
doaj   +1 more source

Monolayer MXene Nanoelectromechanical Piezo-Resonators with 0.2 Zeptogram Mass Resolution. [PDF]

open access: yesAdv Sci (Weinh), 2022
Tan D   +9 more
europepmc   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

open access: yesFEBS 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   +6 more
wiley   +1 more source

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