Membrane-bound b-type cytochromes in Nitrobacter
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چکیده
منابع مشابه
Concentration and function of membrane-bound cytochromes in cyanobacterial heterocysts.
Membranes isolated from heterocysts and vegetative cells of Anabaena 7120 were assayed for content of cytochrome f, cytochrome b-563, cytochrome b-559(HP), cytochrome b-559(LP), and cytochrome aa(3) by use of reduced-minus-oxidized difference spectra. The level of cytochrome aa(3) in heterocyst membranes was 4 to 100 times higher than that in vegetative cells of Anabaena 7120 or other species o...
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Mitochondrial apocytochrome c and c1 are converted to their holoforms in the intermembrane space by attachment of heme to the cysteines of the CXXCH motif through the activity of assembly factors cytochrome c heme lyase and cytochrome c1 heme lyase (CCHL and CC1HL). The maintenance of apocytochrome sulfhydryls and heme substrates in a reduced state is critical for the ligation of heme. Factors ...
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We purified membrane-bound cytochrome c-550 [cytochrome c-550(m)] to an electrophoretically homogeneous state from Nitrobacter winogradskyi. The cytochrome showed peaks at 409 and 525 nm in the oxidized form and peaks at 416, 521, and 550 nm in the reduced form. The molecular weight of the cytochrome was estimated to be 18,400 on the basis of protein and heme c contents and 18,600 by gel filtra...
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The composition and characteristics of b-type cytochromes from higher plant plasma membranes, purified using aqueous two-phase partitioning, were investigated. At least three different cytochromes were identified by their wavelength maxima and redox midpoint potentials (E(0)'). Cytochrome b-560.7 (E(0)' from + 110 to + 160 millivolts) was present in zucchini (Cucurbita pepo) hypocotyls and bean...
متن کاملOxidation of c-Type Cytochromes by the Membrane-Bound Cytochrome Oxidase (Cytochrome aa(3)) of Blue-Green Algae.
Respiratory particles containing an aa(3)-type cytochrome oxidase were prepared from Anacystis nidulans, Synechocystis 6714, Synechococcus lividus, Anabaena variabilis, Nostoc sp. strain MAC, Nostoc muscorum, and Mastigocladus laminosus. Oxidation of c-type cytochromes by membrane preparations of the different blue-green algae was observed using purified cytochromes from horse heart, Candida kr...
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ژورنال
عنوان ژورنال: FEMS Microbiology Letters
سال: 1986
ISSN: 0378-1097
DOI: 10.1016/0378-1097(86)90131-x