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Cited by 358

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Limited proteolysis of the cellobiohydrolase I from Trichoderma reesei: Separation of functional domains

Open access
Van Tilbeurgh, Herman, Tomme, Peter, Claeyssens, Marc, Bhikhabhai, Rama, Pettersson, Göran·1986·FEBS Letters

Abstract

Limited proteolysis of the cellobiohydrolase I (CBH I, 65 kDa) from Trichoderma reesei by papain yields a core protein (56 kDa) which is fully active against small, soluble substrates such as the chromophoric glycosides derived from the cellodextrins and lactose. Activity against an insoluble substrate, such as Avicel, is however completely lost and concomitantly decreased adsorption onto this microcrystalline cellulose is observed. The peptide (10 kDa), initially split off during proteolysis, is identified as the heavily glycosylated carboxy‐terminal of the native CBH I. Depending on the experimental conditions the core protein is further nicked in between disulfide bonds, but its properties and stability do not appreciably differ from those of intact CBH I. These results lead to the proposal of a bifunctional organisation of the CBH I: one domain, corresponding to the carboxyterminal, acts as a binding site for insoluble cellulose and the other, localised in the core protein, contains the active (hydrolytic) site.

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Metadata

Authors
Van Tilbeurgh, H., Tomme, P., Claeyssens, M., Bhikhabhai, R., & Pettersson, G.
Venue
FEBS Letters
Publisher
Wiley
Published
1986-08-18
Volume
204
Issue
2
Pages
223-227
ISSN
  • 0014-5793 (ISSN-L)
  • 1873-3468
OpenAlex
W1497315448
Cited by
358
References
5
FWCI
17.54
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Limited proteolysis of the cellobiohydrolase I from Trichoderma reesei: Separation of functional domains. https://app.cochat.ai/papers/10.1016/0014-5793(86)80816-x
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Van Tilbeurgh, H., Tomme, P., Claeyssens, M., Bhikhabhai, R., & Pettersson, G. (1986). Limited proteolysis of the cellobiohydrolase I from Trichoderma reesei: Separation of functional domains. FEBS Letters. https://doi.org/10.1016/0014-5793(86)80816-x

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