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13 results on '"Cervenansky, Carlos"'

3. Time course and site(s) of cytochrome c tyrosine nitration by peroxynitrite

Author

Bathyany, Carlos, Souza, Jose M., Duran, Rosario, Cassina, Adriana, Cervenansky, Carlos, and Radi, Rafael

Subjects
Nitration -- Research, Tyrosine -- Chemical properties, Cytochrome c -- Chemical properties, Biological sciences, Chemistry
Abstract

The time course and site(s) of tyrosine nitration in horse cytochrome c by peroxynitrite is analyzed and a method of purifying nitrated cytochrome c product by cation-exchange high performance liquid chromatography (HPLC) is developed. The use of purified and well-characterized mono- and dinitrated cytochrome c species highlights the influence of nitration of specific tyrosines in cytochrome c functions.

Published
2005

4. Site-specific interactions of Cu(II) with [alpha] and [beta]-synuclein: bridging the molecular gap between metal binding and aggregation

Author

Binolfi, Andres, Lamberto, Gonzalo R., Duran, Rosario, Quintanar, Liliana, Bertoncini, Carlos W., Souza, Jose M., Cervenansky, Carlos, Zweckstetter, Markus, Griesinger, Christian, and Fernandez, Claudio O.

Subjects
Organocuprates -- Structure, Organocuprates -- Chemical properties, Mutation (Biology) -- Analysis, Chemistry
Abstract

The unresolved structural details related to the binding specificity of Cu(II) is addressed through design of site-directed and domain-truncated mutants of [alpha]-synuclein (AS) and by the characterization of the metal-binding features of its natural homologue [beta]-synuclein (BS). The results have proved that Cu(II) binding in the C-terminal region of synucleins has represented a nonspecific, very low affinity process.

Published
2008

5. Identification of an iron-regulated, hemin-binding outer membrane protein in Sinorhizobium meliloti

Author

Battistoni, Federico, Platero, Raul, Duran, Rosario, Cervenansky, Carlos, Battistoni, Julio, Arias, Alicia, and Fabiano, Elena

Subjects
Rhizobium meliloti -- Research, Iron in the body -- Physiological aspects, Protein binding -- Physiological aspects, Membrane proteins -- Physiological aspects, Biological sciences
Abstract

Research describes the presence of an iron-regulated outer membrane protein in Sinorhizobium meliloti, which binds to hemin. The membrane protein, Sinorhizobium heme receptor, mediates high-affinity heme-mediated iron transport in iron-limited environments.

Published
2002

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