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Multiple-generation oxidation

Multiple-generation oxidation has been studied theoretically via mechanism generators that apply structure activity relations for rate constants and product distributions [49]. Several specific tracers of later-generati(Mi oxidation have been proposed. One is a Cg triacid formed via gas-phase oxidation of c/s-pinonic acid, which is itself a first-generation oxidation product of a-pinene [154]. The triacid is produced rapidly when gas-phase c/s-pinonic acid is exposed to OH radicals, but not when the pinonic acid is partitioned into SOA at low temperatures [155]. For bulk SOA characteristics, Chhabra et al. [156] have shown that SOA formation... [Pg.125]

Sulfatases are unusual in having a residue of formylglycine at the active site. This is generated oxidatively from cysteine in human enzymes923/923a and from serine in some bacterial sulfatases.924 9243 Absence of this modification results in a multiple sulfatase deficiency disease. A probable mechanism of sulfatase... [Pg.659]

If oxygen limits growth and multiplication of aerobic bacteria, the adaptive value and inductive mechanism of poly(3HB) synthesis are quite similar to those outlined for nitrogen limitation. 2/H/ generated are not oxidized via elec-... [Pg.130]

The catalytic cycle of laccase includes several one-electron transfers between a suitable substrate and the copper atoms, with the concomitant reduction of an oxygen molecule to water during the sequential oxidation of four substrate molecules [66]. With this mechanism, laccases generate phenoxy radicals that undergo non-enzymatic reactions [65]. Multiple reactions lead finally to polymerization, alkyl-aryl cleavage, quinone formation, C> -oxidation or demethoxylation of the phenolic reductant [67]. [Pg.142]

Mitochondria, nitric oxide synthase and arachidonic acid metabolism are sources of reactive oxygen species during ischemia-reperfusion injury. ROS generation during ischemia-reperfusion may come from several sources, including NOS activity, mitochondrial electron transport, multiple steps in the metabolism of arachidonic... [Pg.568]

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See also in sourсe #XX -- [ Pg.125 ]



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Multiple oxides

Oxidative generation

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