VRÁBEL, Patrik, Petr TÁBORSKÝ, Markéta RYVOLOVÁ, Helena ŘEHULKOVÁ, Josef HAVEL and Jan PREISLER. Study of Fluorescently Labelled Peptides and Small Proteins Using Capillary Electrophoresis Combined with Laser Induced Fluorescence and MALDI MS Detection. In Collection Symposium Series, Biollogicaly Active Peptides. 8th ed. Praha: Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, 2005, p. 103-106. ISBN 80-86241-26-2.
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Basic information
Original name Study of Fluorescently Labelled Peptides and Small Proteins Using Capillary Electrophoresis Combined with Laser Induced Fluorescence and MALDI MS Detection
Name in Czech Studium fluorescenčně značených peptidů a malých proteinů pomocí kapilární elektroforézy s laserem indukovanou detekcí kombinovanou s hmotnostní spektrometrií MALDI.
Authors VRÁBEL, Patrik (203 Czech Republic, guarantor, belonging to the institution), Petr TÁBORSKÝ (203 Czech Republic, belonging to the institution), Markéta RYVOLOVÁ (203 Czech Republic, belonging to the institution), Helena ŘEHULKOVÁ (203 Czech Republic, belonging to the institution), Josef HAVEL (203 Czech Republic, belonging to the institution) and Jan PREISLER (203 Czech Republic, belonging to the institution).
Edition 8. vyd. Praha, Collection Symposium Series, Biollogicaly Active Peptides, p. 103-106, 4 pp. 2005.
Publisher Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic
Other information
Original language English
Type of outcome Proceedings paper
Field of Study 10406 Analytical chemistry
Country of publisher Czech Republic
Confidentiality degree is not subject to a state or trade secret
Publication form printed version "print"
WWW URL
RIV identification code RIV/00216224:14310/05:00012704
Organization unit Faculty of Science
ISBN 80-86241-26-2
Keywords in English Derivatization; Fluorescent labelling; Capillary Electrophoresis; MALDI Mass Spectrometry; Peptides and Proteins
Tags Capillary electrophoresis, derivatization, Fluorescent labelling, MALDI Mass Spectrometry, Peptides and Proteins
Changed by Changed by: prof. Mgr. Jan Preisler, Ph.D., učo 45329. Changed: 11/4/2013 16:30.
Abstract
In this work, we apply CE-LIF, CE-UV and CE - Matrix Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry (MALDI TOFMS) to investigate derivatization of model peptides and small proteins with rhodamine-based fluorescent reagents, which are compatible with the wavelength of frequency doubled diode pumped Nd:YAG excitation laser (532 nm). While the LIF detection mode is needed for sensitive detection, the MALDI TOFMS analysis can reveal the mass of analytes. Both derivatized and non-derivatized peptides and proteins, the number of fluorescent labels per peptide/proteins and other product of derivatization process can be detected directly from reaction mixtures or after separation. Thus, MALDI TOFMS serves for additional identification of peaks present in CELIF or CEUV electropherograms. For off-line coupling of CE with MALDI MS, subatmospheric deposition interface was used. An examples of final sensitive CELIF separation of derivatized peptides and small proteins are given. Main advantages and disadvantages of LIF, absorbance and MS detector for capillary electrophoresis of polypeptides are disscused. Attention is paid to detection limits in practical analysis.
Abstract (in Czech)
V této práci aplikujeme metody CELIF, CEUV a CE-MALDITOF MS pro analýzu modelových peptidů a proteinů derivatizovaných fluorescenčními barvivy založenými na rhodaminu. Fluorescence připravených rhodaminových derivátů je excitovatelná snadno dostupným pevnolátkovým laserem - diodově pumpovaným Nd:YAG s dvojitě násobenou frekvencí a vlnovou délkou 532 nm. Laserem indukovaná fluorescenční detekce umožňuje velmi citlivé stanovení látek. Podmínkou aplikovatelnosti metody je však dobrá optimalizace celého postupu derivatizace a spolehlivá identifikace elektroferogramu z metody CELIF nebo CEUV. K tomuto účelu je využito laboatorně sestavená konstrukce pro kombinaci CE s hmotnostně spektrometrickou detekcí MALDITOF. V práci jsou na separacích derivatizovaných směsí peptidů a malých proteinů demonstrovány možnosti derivatizace pro 532 nm LIF detektor, a je diskutována citlivost stanovení reálných analytů včetně porovnání s metodou CE bez použití derivatizace a LIF detekce.
Links
GA203/03/0515, research and development projectName: Integrovaná analýza genomu a proteomu terapeuticky významných bakteriofágů kombinací elektroforézy a hmotnostní spektrometrie
Investor: Czech Science Foundation, Integrated genome and proteome analysis of therapeutically important bacteriophages by combination of electrophoresis and mass spectrometry
MSM0021622415, plan (intention)Name: Molekulární podstata buněčných a tkáňových regulací
Investor: Ministry of Education, Youth and Sports of the CR, Molecular basis of cell and tissue regulations
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