25 resultados para heme iron


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Dissertação apresentada para obtenção do Grau de Doutor em Bioquímica, ramo de Bioquímica-Física, pela Universidade Nova de Lisboa, Faculdade de Ciências e Tecnologia

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Biochemistry, 2011, 50 (20), pp 4251–4262 DOI: 10.1021/bi101605p

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J Biol Inorg Chem (2006) 11: 548–558 DOI 10.1007/s00775-006-0104-y

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Dissertation presented to obtain the Master Degree in Molecular Genetics and Biomedicine

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Heme, i.e. iron (Fe) protoporphyrin IX, functions as a prosthetic group in a variety of hemoproteins that participate in vital biologic functions essential to sustain life. Heme is a highly reactive molecule, participating in redox reactions, and presumably for this reason it must be sequestered within the heme pockets of hemoproteins, controlling its reactivity. However, under biological stress conditions, hemoproteins can release their prosthetic groups, generating “free heme”, which binds loosely to proteins or to other molecules and presumably acquires unfettered redox activity. Moreover, a growing body of evidence supports the notion that “free heme” can act in a vasoactive, pro-inflammatory and cytotoxic manner when released from a subset of these hemoproteins, such as extracellular hemoglobin, generated during hemolytic conditions. (...)

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A Thesis submitted at the Faculty Science and Technology of the New University of Lisbon for a degree in Doctor of Philosophy in Biochemistry with specialization in Physical Biochemistry

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Dissertation submitted to obtain the phD degree in Biochemistry, specialty in Physical- Biochemistry, by the Faculdade de Ciências e Tecnologia from the Universidade Nova de Lisboa

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Dissertation presented to obtain the Ph.D. degree in Biochemistry

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Dissertation presented to obtain the Ph.D degree in Biology

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Protein Sci. 2009 Mar;18(3):619-28. doi: 10.1002/pro.69.