ChemInform Abstract: Arene Hydroxylases: Metalloenzymes Catalyzing Dioxygenation of Aromatic Compounds

Bertini, Ivano; Cremonini, Matteo; Ferretti, Silvia; Lozzi, Irene; Luchinat, Claudio; Viezzoli, Maria Silvia

doi:10.1002/chin.199639275

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“…They participate in oxidation-reduction pathways and catalysis. The proteins belonging to this group are ferredoxins, which represent the iron-sulphur cluster that performs the intermediate step in the electron transfer chain, transferring electrons from the flavoprotein to the terminal dioxygenase (Bertini et al, 1996). Complexation of iron in forest soils is influenced by several soil solution variables, including the redox potential and the solution pH value.…”

Section: Introductionmentioning

confidence: 99%

Iron forms and peroxidase activity in forest island soils

Szajdak¹,

Meysner²

2013

Estonian J. Ecol.

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Oxidation-reduction reactions play a key role in ecologically important biogeochemical processes in soil and influence soil chemical, biochemical, and biological properties. The objective of this study was to compare the effect of a forest island located on two kinds of soils on the concentrations of iron forms and peroxidase activity participating in oxidation-reduction processes. The investigations were carried out in the Agroecological Landscape Park in Turew (40 km south of Poznan, Western Polish Lowland, 16°45'E, 52°0rN). The subject of the study was a palace park, which can be considered as a forest island. Part of this forest island is located on mineral soil and another part on mineral-organic soil. Our results showed that the flow of groundwater was accompanied by an increase in peroxidase activity, total iron concentration, and Fe(II) and Fe(in) ions in the mineral soils in most periods of sampling. However, an increase of peroxidase activity and a decrease of total iron concentration and Fe(II) and Fe(III) ions accompanying the flow of groundwater were observed in the mineral-organic soils.

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Section: Introductionmentioning

confidence: 99%