Amino Acid Sequence of Cytochrome c₃ from Desulfovibrio vulgaris, Miyazaki

Abstract

The complete amino acid sequence of a tetrahemoprotein, cytochrome c₃ isolated from Desulfovibrio vulgaris, Miyazaki, was determined to be Ala-Pro-Lys-Ala-Pro-Ala-Asp-Gly-Leu-Lys -Met -Asp-Lys-Thr-Lys-Gln-Pro-Val-Val-Phe-Asn-His-Ser-Thr-His-Lys-Ala-Val-Lys-Cys-Gly-Asp-Cys-His-His-Pro-Val-Asn-Gly-Lys-GI u-Asn-Tyr-Gln-Lys-Cys-Ala-Thr-Ala-Gly-Cys-His-Asp-Asn-Met-Asp-Lys-Lys-Asp-Lys-Ser-Ala-Lys-Gly-Tyr-Tyr-His-Ala-Met-His-Asp-Lys-Gly-Thr-Lys-Phe-Lys-Ser-Cys-Val-Gly-Cys-His-Leu-Gl u-Thr-Ala-Gly-Ala-Asp-Ala-Ala-Lys-Lys-Lys-Glu-Leu-Thr-Gly-Cys-Lys-Gly-Ser-Lys-Cys-His-Ser. The highest homology was found between the sequence of cytochrome c₃ of D. vulgaris, Miyazaki, and that of D. vulgaris, Hildenborough, on comparison among various cytochrome c₃'s. These two consist of 107 amino acid residues and they differ by 14 residues.