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  • Title: Purification and characterization of a hemolysin of Vibrio mimicus that relates to the thermostable direct hemolysin of Vibrio parahaemolyticus.
    Author: Yoshida H, Honda T, Miwatani T.
    Journal: FEMS Microbiol Lett; 1991 Dec 01; 68(3):249-53. PubMed ID: 1804756.
    Abstract:
    A hemolysin (designated Vm-rTDH) from Vibrio mimicus (AQ0915-E13) was purified by ammonium sulfate fractionation and successive column chromatography with DEAE-Sephadex A-25, hydroxyapatite, Mono Q, Superose 12 and Phenyl-Superose. The Mr of the subunit was estimated to be about 22,000 by sodium dodecyl sulfate-slab gel electrophoresis. The isoelectric point of Vm-rTDH was approximately pH 4.9. The hemolytic activity of Vm-rTDH was stable upon heating at 100 degrees C for 10 min, similar to that of the thermostable direct hemolysin (Vp-TDH) of V. parahaemolyticus. Vm-rTDH also showed lytic activities similar to those of Vp-TDH. Immunological cross-reactivity between Vp-TDH and Vm-rTDH was demonstrated by the Ouchterlony double-diffusion test. Thus we conclude that V. mimicus produces a newly discovered type of hemolysin (Vm-rTDH) which is similar to Vp-TDH.
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