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  • Title: Hydrogenosomal succinate thiokinase in Tritrichomonas foetus and Trichomonas vaginalis.
    Author: Jenkins TM, Gorrell TE, Müller M, Weitzman PD.
    Journal: Biochem Biophys Res Commun; 1991 Sep 16; 179(2):892-6. PubMed ID: 1898409.
    Abstract:
    Succinate thiokinase displays a diversity of nucleotide specificity and molecular size throughout Nature. Eukaryotes and Gram-positive bacteria possess distinct 'small' (dimeric) thiokinase enzymes which are specific for adenine (ADP) or guanine (GDP) nucleotides, whereas Gram-negative bacteria contain a single 'large' (tetrameric) enzyme which utilizes both nucleotides. Succinate thiokinase activities, both ADP- and GDP-dependent, were shown to be hydrogenosomal in Tritrichomonas foetus and Trichomonas vaginalis. Surprisingly, the 'small' enzyme was found in T. foetus whereas T. vaginalis contained a 'large' enzyme.
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