C. Soler-rivas et al., Induction of a tyrosinase mRNA in Agaricus bisporus upon treatment with a tolaasin preparation from Pseudomonas tolaasii, PHYSL MOL P, 58(2), 2001, pp. 95-99
In Agaricus bisporus infected with Pseudomonas tolaasii, or treated with a
partially purified tolaasin extract or with purified tolaasin. induction of
a specific mRNA of the two sequences encoding tyrosinase was found. Tyrosi
nase isoforms in samples treated with several concentrations of a partially
purified tolaasin (PT) extract were visualized after Western analysis and
staining with polyclonal tyrosinase-specific antibodies. Similar concentrat
ion of a 67 kDa latent tyrosinase was shown in all the samples including th
e water-treated control hut the treatment with the PT extract caused the po
st-translational modification of the protein into an active tyrosinase of 4
3 kDa. (C) 2001 Academic Press.