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Adsorption of two cellobiohydrolases fromTrichoderma reesei to Avicel: Evidence for “exo-exo” synergism and possible “loose complex” formation

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Summary

Pure cellobiohydrolases I and II (CBH I & II) fromTrichoderma reesei adsorb strongly (K=104M−1) onto micro-crystalline Avicel. Equilibration is slow (>40 min) and saturation levels determined from the adsorption isotherms are almost identical:107–110 nmoles enzyme/mg Avicel. In admixture synergistic effects are observed dependent on the ratio of the enzymes. These effects are maximal for non-saturating conditions (1–10 μM) and when the enzymes are added in two consecutive steps synergism of binding is only apparent for CBH I.

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Authors and Affiliations

  1. Laboratorium voor Biochemie, State University Ghent, K.L.Ledeganckstraat, 35, B-9000, Gent, (Belgium)

    Tomme P., Heriban V. & Claeyssens M.

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  1. Tomme P.
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  2. Heriban V.
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  3. Claeyssens M.
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Tomme, P., Heriban, V. & Claeyssens, M. Adsorption of two cellobiohydrolases fromTrichoderma reesei to Avicel: Evidence for “exo-exo” synergism and possible “loose complex” formation. Biotechnol Lett 12, 525–530 (1990). https://doi.org/10.1007/BF01086347

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