Characterization of ceramides with phytosphingosine backbone by hydrogen-deuterium exchange mass spectrometry

Ceramides are a lipid subclass of the sphingolipids that show large structural diversity. Structural characterization of the ceramides (CERs) can lead to better understanding of their role and function in the biological system. Here we investigated representatives of NP (CER III, CER IIIB) and AP ce...

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Permalink: http://skupni.nsk.hr/Record/nsk.NSK01001074278/Details
Matična publikacija: Croatica chemica acta (Online)
92 (2019), 3 ; str. 411-417
Glavni autori: Đapić, Irena (Author), Jakaša, Ivone, Kobetić, Renata, inženjerka kemije, Brkljačić, Lidija, inženjerka kemije
Vrsta građe: e-članak
Jezik: eng
Predmet:
Online pristup: https://doi.org/10.5562/cca3506
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100 1 |a Đapić, Irena  |4 aut 
245 1 0 |a Characterization of ceramides with phytosphingosine backbone by hydrogen-deuterium exchange mass spectrometry  |h [Elektronička građa] /  |c Irena Dapic, Ivone Jakasa, Renata Kobetic, Lidija Brkljacic. 
300 |b Graf. prikazi. 
504 |a Bibliografija: 33 jed. 
504 |a Summary. 
520 |a Ceramides are a lipid subclass of the sphingolipids that show large structural diversity. Structural characterization of the ceramides (CERs) can lead to better understanding of their role and function in the biological system. Here we investigated representatives of NP (CER III, CER IIIB) and AP ceramide classes (CER VI) that contain phytosphingosine (P) backbone. Ceramides were characterized in positive ionization mode by hydrogen-deuterium exchange mass spectrometry (HDX-MS). Fragmentation in positive ionization mode of the CER III and CER VI resulted in abundant ions assigned to phytosphingosine moiety at m/z 282, 300 and 318. HDX-MS of fragments showed increase in m/z of corresponding ions confirming the exchange of deuterium. In negative ionisation spectra multiple fragment ions were assigned to fatty acyl (RCOO–) moiety. Presence of RCOO– allowed unambiguous identification of CER III and CER IIIB which were distinguished by the presence of double bond on fatty acyl chain. 
653 0 |a Ceramidi  |a Lipidi  |a Sfingolipidi  |a Sfingozin  |a Vodikovi izotopi  |a Teški vodik  |a Deuterij  |a Masena spektrometrija  |a Tandemska spektrometrija masa 
700 1 |a Jakaša, Ivone  |4 aut 
700 1 |a Kobetić, Renata,  |c inženjerka kemije  |4 aut 
700 1 |a Brkljačić, Lidija,  |c inženjerka kemije  |4 aut 
773 0 |t Croatica chemica acta (Online)  |x 1334-417X  |g 92 (2019), 3 ; str. 411-417  |w nsk.(HR-ZaNSK)000255036 
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