Results 51 to 60 of about 5,622,516 (403)

Multiplexed Mass Spectrometry of Individual Ions Improves Measurement of Proteoforms and Their Complexes

Nature Methods, 2020
An Orbitrap-based ion analysis procedure determines the direct charge for numerous individual protein ions to generate true mass spectra. This individual ion mass spectrometry (I2MS) method for charge detection enables the characterization of highly ...
Jared O. Kafader, R. Melani, Kenneth R. Durbin, Bon C. Ikwuagwu, Bryan P. Early, Ryan T. Fellers, S. Beu, V. Zabrouskov, A. Makarov, Joshua T. Maze, D. Shinholt, P. Yip, D. Tullman-Ercek, M. Senko, Philip D. Compton, N. Kelleher   +15 more
semanticscholar   +1 more source

Shotgun ion mobility mass spectrometry sequencing of heparan sulfate saccharides [PDF]

, 2020
Despite evident regulatory roles of heparan sulfate (HS) saccharides in numerous biological processes, definitive information on the bioactive sequences of these polymers is lacking, with only a handful of natural structures sequenced to date.
Grabarics, Márkó, Guimond, Scott E., Hofmann, Johanna, Manz, Christian, Miller, Rebecca L., Pagel, Kevin, Schwörer, Ralf, Tyler, Peter C., Xu, Yongmei [u.v.m.], Zubkova, Olga V.   +9 more
core   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

On the chemistry of 1-pyrroline in solution and in the gas phase

Scientific Reports, 2017
1-Pyrroline has a highly characteristic odor, which is employed by living organisms for chemical signaling and other purposes, but the mechanism whereby this odor is formed remains poorly understood.
Xiaoping Zhang, Konstantin Chingin, Dacai Zhong, Juchao Liang, Yongzhong Ouyang, Huanwen Chen   +5 more
doaj   +1 more source

Imaging mass spectrometry

Mass Spectrometry Reviews, 2007
AbstractImaging mass spectrometry combines the chemical specificity and parallel detection of mass spectrometry with microscopic imaging capabilities. The ability to simultaneously obtain images from all analytes detected, from atomic to macromolecular ions, allows the analyst to probe the chemical organization of a sample and to correlate this with ...
McDonnell, L.A., Heeren, R.M.A.
openaire   +4 more sources

Application of tandem two-dimensional mass spectrometry for top-down deep sequencing of calmodulin [PDF]

, 2018
Two-dimensional mass spectrometry (2DMS) involves simultaneous acquisition of the fragmentation patterns of all the analytes in a mixture by correlating their precursor and fragment ions by modulating precursor ions systematically through a fragmentation
Barrow, Mark P., Chiron, Lionel, Delsuc, Marc-André, Floris, Federico, Lynch, Alice M., O’Connor, Peter B.   +5 more
core   +1 more source

The Caenorhabditis elegans DPF‐3 and human DPP4 have tripeptidyl peptidase activity

FEBS Letters, EarlyView.
The dipeptidyl peptidase IV (DPPIV) family comprises serine proteases classically defined by their ability to remove dipeptides from the N‐termini of substrates, a feature that gave the family its name. Here, we report the discovery of a previously unrecognized tripeptidyl peptidase activity in DPPIV family members from two different species.
Aditya Trivedi, Rajani Kanth Gudipati
wiley   +1 more source

A diverse proteome is present and enzymatically active in metabolite extracts

Nature Communications
Metabolite extraction is the critical first-step in metabolomics experiments, where it is generally regarded to inactivate and remove proteins. Here, arising from efforts to improve extraction conditions for polar metabolomics, we discover a proteomic ...
Rachel (Rae) J. House, Molly T. Soper-Hopper, Michael P. Vincent, Abigail E. Ellis, Colt D. Capan, Zachary B. Madaj, Emily Wolfrum, Christine N. Isaguirre, Carlos D. Castello, Amy B. Johnson, Martha L. Escobar Galvis, Kelsey S. Williams, Hyoungjoo Lee, Ryan D. Sheldon   +13 more
doaj   +1 more source

Workflow automation in liquid chromatography mass spectrometry [PDF]

, 2019
We describe the fully automated workflow path developed for the ingest and analysis of liquid chromatography mass spectrometry (LCMS) data. With the help of this computational workflow, we were able to replace two human work days to analyze data with two
Baidoo, E, Gentz, R, Martin, HG, Peisert, S   +3 more
core  

Peptide‐based ligand antagonists block a Vibrio cholerae adhesin

FEBS Letters, EarlyView.
The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang, Grace Du, Charity Yongo‐Luwawa, Angelina Lu, Brett Kinrade, Kim Munro, Karl E. Klose, William D. Lubell, Peter Davies, Shuaiqi Guo   +9 more
wiley   +1 more source