Název: ANALYSIS OF NON-ENZYMATIC POSTTRANSLATIONAL MODIFICATED (GLYCATED) ALBUMIN BY NANO-LC/MS/MS
Autoři: Šťastná, Zdeňka ; Pataridis, Statis ; Sedláková, Pavla ; Mikšík, Ivan
Typ dokumentu: Příspěvky z konference
Konference/Akce: CECE 2012. International Interdisciplinary Meeting on Bioanalysis /9./, Brno (CZ), 2012-11-01 / 2012-11-02
Rok: 2012
Jazyk: eng
Abstrakt: Posttranslational modifications of proteins are important reactions, which significantly affect the function of proteins in the organism. In principle, they can be divided into enzymatic and non-enzymatic modifications. Non-enzymatic reactions include glycation (earlier called nonezymatic glycosylation), which plays an important role in the development of chronic complications of diabetes mellitus, uremia, in the process of aging and degeneration of the brain.This work deals with the study of glycated albumins (human serum albumin and bovine serum albumin). Methodologically we used nano-liquid chromatography coupled to Q-TOF mass spectrometer. In vitro modified proteins were cleavaged by trypsin and arising peptides were separated on C18 nano column with trap-column. Peptides and their modifications were analysed by high-resolution Q-TOF mass spectrometer MaXis with precision determination of mass below 2 ppm. We found some modifications of proteins. Besides well known carboxymethyllysine new ones were determined - create mass shift 78, 132 and 218. Origin of these modifications is discussed and possible structure is presented. All found modifications were allocated to the structure of proteins and reactivity to various oxo-compounds was also examined
Klíčová slova: non-enzymatic glycation; serum albumin
Číslo projektu: GAP206/12/0453 (CEP), GA203/08/1428 (CEP)
Poskytovatel projektu: GA ČR, GA ČR
Zdrojový dokument: CECE 2012. 9th International Interdisciplinary Meeting on Bioanalysis, ISBN 978-80-904959-1-3

Instituce: Fyziologický ústav AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0240234

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-178145


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Fyziologický ústav
Konferenční materiály > Příspěvky z konference