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https://hdl.handle.net/10316/7578
Título: | Structural characterization of agmatine at physiological conditions | Autor: | Toninello, Antonio Battaglia, Valentina Salvi, Mauro Calheiros, Rita Marques, M. Paula M. |
Data: | 2006 | Citação: | Structural Chemistry. 17:2 (2006) 163-175 | Título da revista, periódico, livro ou evento: | Structural Chemistry | Volume: | 17 | Número: | 2 | Resumo: | Abstract The present work aims at determining the structure–activity relationships (SAR’s) which rule the biological function of agmatine (4-(aminobutyl)guanidinium, AGM), a biogenic amine produced by decarboxylation of arginine. Its structural preferences, both as an isolated molecule and in aqueous solution (namely at physiological conditions) were ascertained, by vibrational (Raman) spectroscopy coupled to theoretical (density functional) calculations. An evaluation of mitochondrial functions (membrane potential (??), mitochondrial swelling, and cytochrome c release) in rat liver mitochondria (RLM) was also carried out. The results thus obtained, coupled to the conformational analysis performed for the distinct polyamine protonation states, allowed to individualize the agmatine structures which interact with the mitochondrial site responsible for its transport and for the protection against mitochondrial permeability transition (MPT) induction, as well as to gain information on the specific mechanisms involved. | URI: | https://hdl.handle.net/10316/7578 | DOI: | 10.1007/s11224-006-9025-1 | Direitos: | openAccess |
Aparece nas coleções: | FCTUC Ciências da Vida - Artigos em Revistas Internacionais |
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SChem_06_17.pdf | 563.37 kB | Unknown | Ver/Abrir |
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