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- W8908037 abstract "Coriolus versicolor, a white-rot basidiomycete, secretes ligno-celluloytic enzymes. Because these are valuable to paper-pulp agricultural industries, trials are in progress to substrate induce these enzymes enhance their secretions. Reported are attempts to develop an extracellular PPO (o-diphenols to 0-diquinones) purification protocol applicable to [open quote]batch-cultured[close quote] C. versicolor. Whereas dialysis (MW [open quote]cut-off[close quote], 14,000) of 13 day growth medium (GM) resulted in 2.17 fold PPO spc. act. increase, dialysis plus a 0-30% (NH[sub 4])[sub 2]SO[sub 4] [open quote]cut[close quote] yielded a 3.27 fold enhancement. Subsequent GM chromatography on DEAE CM-Sephadexes revealed that PPO exchanged with DEAE's counterion without enhancing spc. act. Gel filtration of GM commercial PPOs on G-150 resulted in similar elutions indicating a substitute for ion exchange chromatography. Time-dependent fungal growth in liquid medium followed by viscometry utilizing CMC revealed a GM endocellulase 2 days after inoculation an activity rise to day 12. Filteration of Onozuka cellulase on G-150 yielded an elution profile similar to those of GM authentic PPO's compounding C. versicolor's PPO purification. SDS-PAGE of dialyzed GM revealed 4 proteins, one of which was removed by the (NH[sub 4])[sub 2]SO[sub 4]. The m[sub TS] of commercial Sigma's PPO Onozuka cellulase were 0.76 0.59, respectively, formore » comparison to C. versicolor's PPO. Affinity, hydroxylapatite hydrophobic interaction chromatographies may yield a single SDS-PAGE PPO band.« less" @default.
- W8908037 created "2016-06-24" @default.
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- W8908037 date "1993-05-01" @default.
- W8908037 modified "2023-09-26" @default.
- W8908037 title "Partial purification of coriolus versicolor's extracellular polyphenol oxidase (PPO)" @default.
- W8908037 hasPublicationYear "1993" @default.
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