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  • Title: [Study of the structure of the photosynthetic reaction center of the green thermophilic bacteria Chloroflexus aurantiacus].
    Author: Kutuzov MA, Shmukler BE, Zargarov AA, Telezhinskaia IN, Levina NB, Zolotarev AS, Abdulaev NG.
    Journal: Bioorg Khim; 1990 Sep; 16(9):1218-35. PubMed ID: 2080929.
    Abstract:
    Analysis of the Chloroflexus aurantiacus reaction centre (RC) using both protein and recombinant DNA techniques resulted in determination of its polypeptide composition and the primary structures of its two subunits. A model of the polypeptide chains' folding in the membrane is suggested based on: i) homology between L- and M-subunits of Chloroflexus aurantiacus RC and their counterparts in purple bacteria; ii) comparison of their hydropathy plots, and iii) data on the tertiary structures of purple bacteria RCs. The role of a number of functionally important amino acid residues in the RC electron transport activity is discussed. Limited proteolysis of the RC under non-denaturing conditions was used to determine the contribution of the N-terminal regions to its thermal stability.
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