Amino acid sequences of Euglena viridis ferredoxin and cytochromes c
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Amino acid sequences of Euglena viridis ferredoxin and cytochromes c.
The Order Euglenida comprises many species and perhaps 40 genera, but almost all biochemical and genetic studies have been limited to a single species. Euglena gracilis, because of its ease of growth in the laboratory. Sequence studies of chloroplast and mitochondrial proteins from E. gracilis show that they have diverged widely from other eukaryotic lines. In the present paper we report the se...
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The amino acid composition of several preparations of spinach ferredoxin was determined, and the most reliable composition was concluded to be: Lysd, Hisr, Argr, Trpr, Asp,,, Thr8, Ser?, Glu13, Prod, GUYS, Alas, CYSS, V&, Meto, Ile4, Leus, Tgr4, Phez, (NH3)6. The total number of amino acid residues is 9’7. The molecular weight of spinach ferredoxin was determined by gel tiltration, amino acid c...
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A pigment-protein complex can be extracted, in aqueous 2-percent digitonin, from Euglena grown in the light. When further fractionated by acetone and ammonium sulfate this flagellate yields a c-type cytochrome. By similar extraction of dark-grown, nonphotosynthetic Euglena, another c-type cytochrome can be isolated. The cytochrome from the light-grown Euglena- is like that of cytochrome c isola...
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Cytochrome c-557 from Crithidia oncopelti and cytochrome c-558 from Euglena gracilis are mitochondrial cytochromes c that have an atypical haem-binding site. It was of interest to know whether the loss of one thioether bond affected the physicochemical properties of these cytochromes. The thermodynamic parameters of the redox potential were measured. The reaction with imidazole, the kinetics an...
متن کاملThe amino acid sequence of Chromatium ferredoxin.
The amino acid sequence of Chromatium ferredoxin was determined by studies of thermolysin peptides of S-carboxymethylcysteinylferredoxin and chymotryptic peptides of oxidized ferredoxin. The 81 amino acid residues in the molecule have the following sequence: Ala-Leu-Met-IleThr-Asp-Gln-Cys-Ile-Asn-Cys-Asn-Val-Cys-Gln-ProGlu-Cys-Pro-Asn-Gly-Ala-Ile-Ser-Gln-Gly-Asp-Glu-ThrTyr-Val-Ile-Glu-Pro-Ser-L...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1991
ISSN: 0264-6021,1470-8728
DOI: 10.1042/bj2760047