Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.18/2221
Título: Mitochondria proteome profiling: a comparative analysis between gel- and gel-free approaches
Autor: Ferreira, R.
Rocha, H.
Almeida, V.
Padrão, A.L.
Santa, C.
Vilarinho, L.
Amado, F.
Vitorino, R.
Palavras-chave: Doenças Genéticas
Proteoma Mitocondrial
Electrophoresis
Gel-based
Gel-free
LC-MS/MS
PTMs
Proteomics
Data: 15-Out-2013
Editora: Elsevier
Citação: Talanta. 2013 Oct 15;115:277-83. doi: 10.1016/j.talanta.2013.04.026. Epub 2013 Apr 22
Resumo: Mitochondrial proteomics emerged aiming to disclose the dynamics of mitochondria under various pathophysiological conditions. In the present study we investigated the relative merits of gel-based (2DE and SDS-LC) and gel-free (2D-LC) protein separation approaches and protein identification algorithms (Mascot and Paragon) in the proteome profiling of mitochondria isolated from cultured fibroblasts, a sample traditionally used for diagnosis purposes. Combining data retrieved from 2DE, 2D-LC and SDS-LC and search methods, a total of 696 non-redundant proteins were identified. An overlap of only 19% between the proteins identified by the three different methods was observed when Mascot and Paragon were used. Regarding protein ID, a consistency in the number of identified proteins per sample was noticed for 2DE approach. Independent of the methodological approach chosen, it was noticed that the predominance in mitochondria of hydrophilic proteins with 20-50 kDa and pI 5-6 and 8-9; however, 2D-LC and SDS-LC allowed the enrichment of proteins with a mass below 30 kDa and of basic proteins with pI values above 8. In conclusion, data from the present study highlight the power of integrating different separation technologies and protein identification algorithms.
Peer review: yes
URI: http://hdl.handle.net/10400.18/2221
ISSN: 0039-9140
Versão do Editor: http://www.sciencedirect.com/science/article/pii/S0039914013003081
Aparece nas colecções:DGH - Artigos em revistas internacionais

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