6 výsledky
In the present paper we have investigated the effect of mutagenesis of a number of highly conserved residues (R159, D163, L177 and L267) which we have recently shown to line the hydrophobic inhibitor/substrate cavity in the alternative oxidases (AOXs). Measurements of respiratory activity in rSgAOX
Molecularly imprinted polymer nanoparticles (MIPNPs) with the ability to recognize coenzyme Q10 (CoQ10) were synthesised in order to be employed as sorbent in a dispersive micro-solid phase extraction (DMSPE) for the determination of CoQ10 in a liver extract. CoQ10 is a redox-active, lipophilic
The crystal structure of the cytochrome bc1 complex (ubiquinol-cytochrome c reductase) from bovine heart submitochondria was determined at 2.9 A resolution. The bc1 complex in crystal exists as a closely interacting dimer, suggesting that the dimer is a functional unit. Over half of the mass of the
A number of mutant forms of horse cytochrome-c with single or double substitutions of lysine residues near the heme cavity was prepared that provided an interaction of mitochondrial ubiquinone with cytochrome-c reductase (EC 1.10.2.2) (complex III) and cytochrome-c oxidase (EC 1.9.3.1) (complex IV).
BACKGROUND
Mitochondrial processing peptidase (MPP) is a metalloendopeptidase that cleaves the N-terminal signal sequences of nuclear-encoded proteins targeted for transport from the cytosol to the mitochondria. Mitochondrial signal sequences vary in length and sequence, but each is cleaved at a
In addition to haem copper oxidases, all higher plants, some algae, yeasts, molds, metazoans, and pathogenic microorganisms such as Trypanosoma brucei contain an additional terminal oxidase, the cyanide-insensitive alternative oxidase (AOX). AOX is a diiron carboxylate protein that catalyzes the