J 2017

LC coupled to ESI, MALDI and ICP MS - A multiple hyphenation for metalloproteomic studies

COUFALÍKOVÁ, Kateřina, Iva BENEŠOVÁ, Tomáš VACULOVIČ, Viktor KANICKÝ, Jan PREISLER et. al.

Basic information

Original name

LC coupled to ESI, MALDI and ICP MS - A multiple hyphenation for metalloproteomic studies

Authors

COUFALÍKOVÁ, Kateřina (203 Czech Republic, belonging to the institution), Iva BENEŠOVÁ (203 Czech Republic, belonging to the institution), Tomáš VACULOVIČ (203 Czech Republic, belonging to the institution), Viktor KANICKÝ (203 Czech Republic, belonging to the institution) and Jan PREISLER (203 Czech Republic, guarantor, belonging to the institution)

Edition

Analytica Chimica Acta, Amsterdam, Elsevier Science BV, 2017, 0003-2670

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10406 Analytical chemistry

Country of publisher

Netherlands

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 5.123

RIV identification code

RIV/00216224:14310/17:00094859

Organization unit

Faculty of Science

UT WoS

000398436800006

Keywords in English

Matrix-assisted laser desorption/ionization; mass spectrometry; Inductively coupled plasma mass; spectrometry; Electrospray ionization mass spectrometry; Liquid chromatography; Metallothionein isoforms; Metal complexes

Tags

Změněno: 6/4/2018 11:38, Ing. Nicole Zrilić

Abstract

V originále

A new multiple detection arrangement for liquid chromatography (LC) that supplements conventional electrospray ionization (ESI) mass spectrometry (MS) detection with two complementary detection techniques, matrix-assisted laser desorption/ionization (MALDI) MS and substrate-assisted laser desorption inductively coupled plasma (SALD ICP) MS has been developed. The combination of the molecular and elemental detectors in a single separation run is accomplished by utilizing a commercial MALDI target made of conductive plastic. The proposed platform provides a number of benefits in today's metalloproteomic applications, which are demonstrated by analysis of a metallothionein mixture. To maintain metallothionein complexes, separation is carried out at a neutral pH. The effluent is split; a major portion is directed to ESI MS while the remaining 1.8% fraction is deposited onto a plastic MALDI target. Dried droplets are overlaid with MALDI matrix and analysed consecutively by MALDI MS and SALD ICP MS. In the ESI MS spectra, the MT isoform complexes with metals and their stoichiometry are determined; the apoforms are revealed in the MALDI MS spectra. Quantitative determination of metallothionein isoforms is performed via determination of metals in the complexes of the individual protein isoforms using SALD ICP MS. (C) 2017 Elsevier B.V. All rights reserved.

Links

GA15-05387S, research and development project
Name: Laserově desorpční hmotnostní spektrometrie pro analýzu molekul a nanočástic
Investor: Czech Science Foundation
LQ1601, research and development project
Name: CEITEC 2020 (Acronym: CEITEC2020)
Investor: Ministry of Education, Youth and Sports of the CR