Artigo publicado pelo Grupo do INCT-Acqua “Chemical reactions of As complexation by glutathione: an XAFS study”

O grupo do ICB da UFMG, integrante do INCT-Acqua, publicou recentemente artigo intitulado “Chemical reactions of As complexation by glutathione: an
XAFS study” no Journal of Physics.  O Professor Francisco Barbosa, vice-coordenador do INCT-Acqua é coautor do artigo, e sua aluna Maione Franco é a autora principal.

Abstract

In this study, the chemical reactions between As(III) and As(V) with glutathione,
which is a target compound in As biochemistry due to its primordial role in As immobilization
and intracellular reduction, in various molar ratios were investigated using As K-edge XAFS
spectroscopy. Results showed a gradual substitution of As-O bonds in the coordination of
aqueous As(III) and As(V) for three As-S bonds in the As+GSH complex. Moreover, the data
showed reduction of As(V) to As(III) prior or concomitant to the As+GSH complex formation.

Confira o artigo na integra:  https://acqua-inct.org/wp-content/uploads/2016/06/Artigo-IOP-glutathiona.pdf