wild type strains IWD72 and BY4741 and enzyme knockout mutants, knockout mutant forms large, invasive filaments, activity increases at 5-6 h of cultivation in the presence of 0.5% isoamyl alcohol and then quickly declines to become undetectable after 8 h
in strains lacking Gre2 activity, which are subjected to environmental stress straining the cell membrane, growth is significantly and exclusively reduced. No compensatory mechanisms are activated due to loss of Gre2p during growth in favourable conditions (synthetic defined media, no stress), but a striking and highly specific induction of the ergosterol biosynthesis pathway, enzymes Erg10, Erg19 and Erg6, is observed in Gre2 mutant strains during growth in a stress conditions in which lack of Gre2 significantly affects growth. Mutant strains display vastly impaired tolerance exclusively to agents targeting the ergosterol biosynthesis
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crystal structures in an apo-form at 2.00 A and NADPH-complexed form at 2.40 A resolution. Gre2 forms a homodimer, each subunit of which contains an N-terminal Rossmann-fold domain and a variable C-terminal domain, which participates in substrate recognition. The induced fit upon binding to the cofactor NADPH makes the two domains shift toward each other, producing an interdomain cleft that better fits the substrate