1. Mercury metalloproteomic profile in muscle tissue of Arapaima gigas from the Brazilian Amazon
- Author
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Izabela, da Cunha Bataglioli, João Vitor, de Queiroz, José Cavalcante Souza, Vieira, Nubya Gonçalves, Cavalline, Camila Pereira, Braga, Marília Afonso Rabelo, Buzalaf, Luís Fabrício, Zara, Jiri, Adamec, and Pedro, de Magalhães Padilha
- Subjects
Proteome ,Muscles ,Fishes ,PROTEÔMICA ,Mercury ,General Medicine ,Management, Monitoring, Policy and Law ,Pollution ,Tandem Mass Spectrometry ,Animals ,Biomarkers ,Brazil ,Water Pollutants, Chemical ,Chromatography, Liquid ,Environmental Monitoring ,General Environmental Science - Abstract
Metalloproteomics is an innovative methodology for identifying of protein-associated mercury. Thus, we analyzed the muscle proteome of Arapaima gigas (pirarucu), collected in the Madeira River of the Brazilian Amazon, to identify protein-associated mercury, with the aim of identifying possible mercury biomarkers in fish muscle tissue. After obtaining the protein pellet, we conducted two-dimensional electrophoresis (2D PAGE) to fractionate the muscle proteome. Total mercury in muscle tissue and protein pellets and mapping of mercury content in protein spots of the 2D PAGE gels was determined using graphite furnace atomic absorption spectrometry (GFAAS). The protein-associated mercury identification was performed using liquid chromatography coupled with sequence mass spectrometry (LC‒MS/MS). Total mercury determinations by GFAAS indicated concentrations on the order of 153 ± 1.90 mg kg
- Published
- 2022