National Repository of Grey Literature 473 records found  beginprevious460 - 469next  jump to record: Search took 0.01 seconds. 
Separation and identification of monogalactosyldiacylglycerols and digalactosyldiacylglycerols by RP-HPLC/ESI-MS
Krásová, Marie ; Cvačka, Josef
RP-HPLC/ESI-MS methods for analyzing complex mixtures of monogalactosyldiacylglycerols (MGDGs) and digalactosyldiacylglycerols (DGDGs) was developed. The methods allow separation and detection of more than 30 molecular species of MGDGs and more than 40 molecular species of DGDGs in plant samples.
Study on oligosaccharide composition of wort and beer samples by liquid chromatography/electrospray ionization tandem mass spectrometry
Čmelík, Richard ; Berkecz, R. ; Janáky, T. ; Bobálová, Janette
LC-MS technique was successfully applied to the description of oligosaccharides mixtures in wort and beer samples. Based on the important differences in MS/MS spectra the structural features of coeluted oligosaccharides were found.
Analysis of art objects by mass spectrometry
Kučková, Štěpánka ; Hynek, R. ; Kodíček, M.
This paper reviews the latest progress in the identification of the proteinaceous materials and organic dyes presented in art and in historical building materials using mass spectrometry as a dominant method.
Hmotnostní spektrometrie peptidů z jedových váčků čmeláků
Cvačka, Josef ; Voburka, Zdeněk ; Hovorka, Oldřich ; Nováková, Kateřina ; Valterová, Irena ; Čeřovský, Václav
Five novel structurally related peptides were isolated and characterized from the venom of the bumblebee Bombus terrestris. Some of these peptides consisting of 13-18 amino acids residues presented strong antimicrobial activity against Bacillus subtilis.
Vliv vápníku na komplex calmodulin-melittin: Studie používající chemického zesítění a FTMS
Giannakopulos, A. ; Derrick, P. J. ; Havlíček, Vladimír ; Novák, Petr
Melittin binds tightly to calmodulin in the presence of calcium and inhibits the function o f calmodulin. Chemical cross-linking combined with mass spectrometry has been used in order to define the positions of Calmodulin and melittin in the complex at different concentrations of calcium
Je zde nějaký HLA-B27 asociovaný peptid odpovědný za Ankylosní spondylitidu
Novák, Petr ; Man, Petr ; Stodůlková, Eva ; Ivašková, E. ; Flieger, Miroslav
Peptides eluted from HLA-B27 molecules of peripheral blood leukocytes (PBL) of healthy blood donors (HLT) and AS patients were analyzed by MALDI mass spectrometry and ESI mass spectrometry. Similarity within HLT and AS data sets was evaluated
ESI-MS/MS studie nativních a modifikovaných komplexů hemoglobinu
Hesso, A. ; Tornaeus, J. ; Havlíček, Vladimír
Tandem mass spectroemtry is a suitable method to analyse haemoglobin complexes and resolve their structure
Interakce apomyoglobinu s liposomy prozkoumána pomocí H/D výměny
Man, Petr ; Montagner, C. ; Dublet, B. ; Yelmo, Ch. B. ; Halada, Petr ; Forge, V. ; Forest, E.
Interaction between apomyoglobin and lipidic vesicles was investigated by hydrogen deuterium exchange coupled to mass spectrometry. We revealed two regions in the protein implicated in the pH dependent binding to the surface of lipidic membrane
Influence of the laser power and analyte concentration on the results in MALDI-TOF MS of oligosaccharides
Čáslavský, Josef ; Chmelík, Josef
MALDI-TOF MS has been successfully applied for the analysis of a wide range of organic biopolymers including oligosaccharides. We focus our attention to the group of oligosaccharides occuring in beer and in malting and mashing products, which are mainly oligosaccharides containing from 3 to more than 30 glucose units in their molecules. We tried to evaluate various factors influencing the obtained results. We found that the shape of the spectrum depends significantly on the energy of ionising laser pulse and also on the amount of the analyte on the MALDI target. These effects were studied with standard mixtures as well as with real samples.
Microchips and MS coupling
Foret, František
Review of the current state of system miniaturization and coupling of chips with mass spectrometry.

National Repository of Grey Literature : 473 records found   beginprevious460 - 469next  jump to record:
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