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Docking and electron transfer studies between rubredoxin and rubredoxin : oxyge...
Victor, Bruno; Vicente, João; Rodrigues, Rute; Oliveira, Solange; Rodrigues-Pousada, Claudina; Frazão, Carlos; Gomes, Cláudio; Teixeira, MiguelAbstract: The interaction and electron transfer (ET) between rubredoxin (Rd) and rubredoxin: oxygen oxidoreductase (ROO) from Desulfovibrio gigas is studied by molecular modelling techniques. Experimental kinetic assays using recombinant proteins show that the Rd reoxidation by ROO displays a bell-shaped dependence on ionic strength, suggesting a non-trivial electrostatic dependence of the interaction between t...
Structure of a dioxygen reduction enzyme from Desulfovibrio gigas
Frazão, Carlos; Silva, Gabriela; Gomes, Claudio; Matias, Pedro; Coelho, R; Sieker, L; Macedo, S; Liu, MY; Oliveira, Solange; Teixeira, MiguelDesulfovibrio gigas is a strict anaerobe that contains a well-characterized metabolic pathway that enables it to survive transient contacts with oxygen. The terminal enzyme in this pathway, rubredoxin:oxygen oxidoreductase (ROO) reduces oxygen to water in a direct and safe way. The 2.5 Angstrom resolution crystal structure of ROO shows that each monomer of this homodimeric enzyme consists of a novel combination...
The Glycosylation of the Aspartic Proteinases from Barley (Hordeum Vulgare L.) ...
Costa, Júlia; Ashford, David A.; Nimtz, Manfred; Bento, Isabel; Frazão, Carlos; Esteves, Cristina L.; Faro, Carlos J.; Kervinen, Jukka; Pires, EuclidesPlant aspartic proteinases characterised at the molecular level contain one or more consensus N-glycosylation sites [Runeberg-Roos, P., Törmäkangas, K. & Östman, A. (1991) Eur. J. Biochem. 202, 102120131027; Asakura, T., Watanabe, H., Abe, K. & Arai, S. (1995) Eur. J. Biochem. 232, 77201383; Veríssimo, P., Faro, C., Moir, A. J. G., Lin, Y., Tang, J. & Pires, E. (1996) Eur. J. Biochem. 235, 76220137681. We found...
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