Results 11 to 20 of about 218,280 (260)

BLINK enables ultrafast tandem mass spectrometry cosine similarity scoring

open access: yesScientific Reports, 2023
Metabolomics has a long history of using cosine similarity to match experimental tandem mass spectra to databases for compound identification. Here we introduce the Blur-and-Link (BLINK) approach for scoring cosine similarity.
Thomas V. Harwood   +5 more
doaj   +1 more source

Plasma free and total carnitine measured in children by tandem mass spectrometry

open access: yesBrazilian Journal of Medical and Biological Research, 2002
Free and total carnitine quantification is important as a complementary test for the diagnosis of unusual metabolic diseases, including fatty acid degradation disorders.
J.H. Osorio, M. Pourfarzam
doaj   +1 more source

Tandem mass spectrometry data quality assessment by self-convolution

open access: yesBMC Bioinformatics, 2007
Background Many algorithms have been developed for deciphering the tandem mass spectrometry (MS) data sets. They can be essentially clustered into two classes.
Tham Wai, Choo Keng
doaj   +1 more source

Water Circulation and Marine Environment in the Antarctic Traced by Speciation of 129I and 127I

open access: yesScientific Reports, 2017
Emissions of anthropogenic 129I from human nuclear activities are now detected in the surface water of the Antarctic seas. Surface seawater samples from the Drake Passage, Bellingshausen, Amundsen, and Ross Seas were analyzed for total 129I and 127I, as ...
Shan Xing   +6 more
doaj   +1 more source

Improved mass accuracy for tandem mass spectrometry [PDF]

open access: yesJournal of the American Society for Mass Spectrometry, 2005
With the emergence of top-down proteomics, the ability to achieve high mass measurement accuracy on tandem MS/MS data will be beneficial for protein identification and characterization. (FT-ICR) Fourier transform ion cyclotron resonance mass spectrometers are the ideal instruments to perform these experiments with their ability to provide high ...
Kaiser, Nathan K.   +2 more
openaire   +2 more sources

Sucrose gradient chromatin enrichment for quantitative proteomics analysis in budding yeast

open access: yesSTAR Protocols, 2021
Summary: Here, we describe a fractionation protocol optimized to quantify changes in relative abundance of the chromatin-bound proteome (chromatome) by tandem mass tag multiplexing-based tandem mass spectrometry. It has been applied to yeast cells before
Kiran Challa   +2 more
doaj   +1 more source

Seminolipid and its precursor/degradative product, galactosylalkylacylglycerol, in the testis of saposin A- and prosaposin-deficient mice

open access: yesJournal of Lipid Research, 2003
Sphingolipid activator proteins (saposins A, B, C, and D) are derived from a common precursor protein (prosaposin) and specifically activate in vivo degradation of glycolipids with short carbohydrate chains.
Keiko Tadano-Aritomi   +4 more
doaj   +1 more source

An updated map of Trypanosoma cruzi histone post-translational modifications

open access: yesScientific Data, 2021
Measurement(s) histone_modification Technology Type(s) mass spectrometry • nanoflow liquid chromatography-tandem mass spectrometry • Data-Dependent Acquisition Sample Characteristic - Organism Trypanosoma cruzi Machine-accessible metadata file describing
Rafael Fogaça de Almeida   +2 more
doaj   +1 more source

Gas-Phase Fragmentation of Cyclic Oligosaccharides in Tandem Mass Spectrometry

open access: yesMolecules, 2019
Modern mass spectrometry, including electrospray and MALDI, is applied for analysis and structure elucidation of carbohydrates. Cyclic oligosaccharides isolated from different sources (bacteria and plants) have been known for decades and some of them ...
Alexander O. Chizhov   +2 more
doaj   +1 more source

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