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Showing 1-16 of 16 results for "94141" within Papers
Marcel Wiegelmann et al.
Analytical and bioanalytical chemistry, 405(22), 6925-6932 (2012-10-16)
A high analytical sensitivity in ultraviolet matrix-assisted laser desorption ionization mass spectrometry (MALDI-MS) is only achieved if the laser wavelength corresponds to a high optical absorption of the matrix. Laser fluence and the physicochemical properties of the compounds, e.g., the
Thorsten W Jaskolla et al.
Journal of proteome research, 8(7), 3588-3597 (2009-05-14)
The performance of the recently developed 4-chloro-alpha-cyanocinnamic acid (Cl-CCA) matrix-assisted laser desorption ionization mass spectrometry (MALDI MS) matrix was investigated in comparison to the most widely used matrix alpha-cyano-4-hydroxycinnamic acid (CHCA). For this purpose, in-solution digestions of standard proteins in
Jens Soltwisch et al.
Journal of the American Society for Mass Spectrometry, 24(10), 1477-1488 (2013-08-15)
The success of matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) as a widely employed analytical tool in the biomolecular sciences builds strongly on an effective laser-material interaction that is resulting in a soft co-desorption and ionization of matrix and imbedded biomolecules.
Tiffany Porta et al.
Journal of mass spectrometry : JMS, 46(2), 144-152 (2011-01-25)
Analysis of low molecular weight compounds (LMWC) in complex matrices by vacuum matrix-assisted laser desorption/ionization (MALDI) often suffers from matrix interferences, which can severely degrade limits of quantitation. It is, therefore, useful to have available a range of suitable matrices
Jens Soltwisch et al.
Analytical chemistry, 84(15), 6567-6576 (2012-07-19)
The laser wavelength constitutes a key parameter in ultraviolet-matrix-assisted laser desorption ionization-mass spectrometry (UV-MALDI-MS). Optimal analytical results are only achieved at laser wavelengths that correspond to a high optical absorption of the matrix. In the presented work, the wavelength dependence
Mark W Towers et al.
Journal of proteome research, 9(4), 1931-1940 (2010-02-13)
Matrix-assisted laser desorption/ionization (MALDI) is a key ionization technique in mass spectrometry (MS) for the analysis of labile macromolecules. An important area of study and improvements in relation to MALDI and its application in high-sensitivity MS is that of matrix
John D Leszyk
Journal of biomolecular techniques : JBT, 21(2), 81-91 (2010-07-02)
MALDI-TOF continues to be an important tool for many proteomic studies. Recently, a new rationally designed matrix 4-chloro-alpha-cyanocinnamic acid was introduced, which is reported to have superior performance as compared with the "gold standard" alpha-cyano-4-hydroxycinnamic acid (CHCA). In this study
Florian Baum et al.
Journal of agricultural and food chemistry, 61(38), 9110-9117 (2013-09-03)
Multiphosphorylated peptides endogenously present in milk exert anticariogenic activity due to their calcium binding capacity. This study performed comprehensive analysis of multiphosphorylated peptides in raw milk using matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF-MS). Since phosphopeptides are often negatively
Thorsten W Jaskolla et al.
Journal of the American Society for Mass Spectrometry, 22(6), 976-988 (2011-09-29)
This work experimentally verifies and proves the two long since postulated matrix-assisted laser desorption/ionization (MALDI) analyte protonation pathways known as the Lucky Survivor and the gas phase protonation model. Experimental differentiation between the predicted mechanisms becomes possible by the use
Dimitrios G Papasotiriou et al.
Journal of proteome research, 9(5), 2619-2629 (2010-04-07)
Peptide Mass Fingerprinting (PMF) of tryptically in-gel digested samples is a well-established protein identification technique for MALDI mass spectrometry but an in-depth PMF evaluation for in-gel digestions of less specific enzymes is still missing. This study demonstrates that the MALDI-LTQ-Orbitrap
Thorsten Jaskolla et al.
Journal of the American Society for Mass Spectrometry, 20(5), 867-874 (2009-02-10)
Phosphatidylethanolamines (PEs) are abundant lipid constituents of the cellular membrane. The amino group of PEs exhibits high reactivity with hypochlorous acid that is generated under inflammatory conditions in vivo. The analysis of the resulting PE mono- and dichloramines is of
Joerg Flemmig et al.
Chemistry and physics of lipids, 161(1), 44-50 (2009-07-07)
The binding of the heme enzyme myeloperoxidase to phosphatidylserine epitopes on the surface of non-vital polymorphonuclear leukocytes and other cells at inflammatory sites favours modifications of this phospholipid by myeloperoxidase products. As detected by MALDI-TOF mass spectrometry hypochlorous acid and
Kristin Teuber et al.
Chemistry and physics of lipids, 163(6), 552-560 (2010-04-28)
Due to its sensitivity, the tolerance of impurities and the simplicity of performance, matrix-assisted laser desorption and ionization time-of-flight (MALDI-TOF) mass spectrometry (MS) is increasingly used to analyze lipids from biological sources. Although its detailed role is not understood so
Maurice H J Selman et al.
Proteomics, 12(9), 1337-1348 (2012-05-17)
For MALDI analysis of glycans and glycopeptides, the choice of matrix is crucial in minimizing desialylation by mass spectrometric in-source and metastable decay. Here, we evaluated the potential of 4-chloro-α-cyanocinnamic acid (Cl-CCA) for MALDI-TOF-MS analysis of labile sialylated tryptic N-glycopeptides
Maja Pučić Baković et al.
Journal of proteome research, 12(2), 821-831 (2013-01-10)
Age and sex dependence of subclass specific immunoglobulin G (IgG) Fc N-glycosylation was evaluated for 1709 individuals from two isolated human populations. IgGs were obtained from plasma by affinity purification using 96-well protein G monolithic plates and digested with trypsin.
Thorsten W Jaskolla et al.
Proceedings of the National Academy of Sciences of the United States of America, 105(34), 12200-12205 (2008-08-30)
Matrix-assisted laser desorption ionization (MALDI) has become an enabling technology for the fields of protein mass spectrometry (MS) and proteomics. Despite its widespread use, for example, in protein identification via peptide mass fingerprinting, a comprehensive model for the generation of
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