ArticleJournal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry2013
Characterizing the effects of the protein environment on the reduction potentials of metalloproteins.
Article in Journal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 9 citations in OpenAlex.
- Development of a Rubredoxin-Type Center Embedded in a de Dovo-Designed Three-Helix Bundle.Biochemistry · 2018Article
- Protein dynamics and the all-ferrous [Fe4 S4 ] cluster in the nitrogenase iron protein.Protein science : a publication of the Protein Society · 2016Article
- De novo-designed metallopeptides with type 2 copper centers: modulation of reduction potentials and nitrite reductase activities.Journal of the American Chemical Society · 2013Article
- Identifying sequence determinants of reduction potentials of metalloproteins.Journal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry · 2013Article
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2 authors at 1 institution in 1 country.
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Abstract
The reduction potentials of electron transfer proteins are critically determined by the degree of burial of the redox site within the protein and the degree of permanent polarization of the polypeptide around the redox site. Although continuum electrostatics calculations of protein structures can predict the net effect of these factors, quantifying each individual contribution is a difficult task. Here, the burial of the redox site is characterized by a dielectric radius R(p) (a Born-type radius for the protein), the polarization of the polypeptide is characterized by an electret potential ϕ(p) (the average electrostatic potential at the metal atoms), and an electret-dielectric spheres (EDS) model of the entire protein is then defined in terms of R(p) and ϕ(p). The EDS model shows that for a protein with a redox site of charge Q, the dielectric response free energy is a function of Q(2), while the electret energy is a function of Q. In addition, R(p) and ϕ(p) are shown to be characteristics of the fold of a protein and are predictive of the most likely redox couple for redox sites that undergo different redox couples.
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