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Escherichia coli Expression, Purification, Crystallization, and Structure Determination of Bacterial Cohesin–Dockerin Complexes

Lookup NU author(s): Emeritus Professor Harry Gilbert

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Abstract

Cellulosomes are highly efficient nanomachines that play a fundamental role during the anaerobic deconstruction of complex plant cell wall carbohydrates. The assembly of these complex nanomachines results from the very tight binding of repetitive cohesin modules, located in a noncatalytic molecular scaffold, and dockerin domains located at the C-terminus of the enzyme components of the cellulosome. The number of enzymes found in a cellulosome varies but may reach more than 100 catalytic subunits if cellulosomes are further organized in poly-cellulosomes, through a second type of cohesin dockerin interaction. Structural studies have revealed how the cohesin dockerin interaction mediates cellulosome assembly and cell-surface attachment, while retaining the flexibility required to potentiate catalytic synergy within the complex. Methods that might be applied for the production, purification, and structure determination of cohesin dockerin complexes are described here.


Publication metadata

Author(s): Bras JLA, Carvalho AL, Viegas A, Najmudin S, Alves VD, Prates JAM, Ferreira LMA, Romao MJ, Gilbert HJ, Fontes CMGA

Editor(s): Gilbert, H.J.

Publication type: Book Chapter

Publication status: Published

Book Title: Cellulases

Year: 2012

Volume: 510

Pages: 395-415

Print publication date: 01/01/2012

Series Title: Methods in Enzymology (ISSN: 0076-6879)

Publisher: Academic Press

Place Published: San Diego, California, USA

URL: http://dx.doi.org/10.1016/B978-0-12-415931-0.00021-5

DOI: 10.1016/B978-0-12-415931-0.00021-5

Library holdings: Search Newcastle University Library for this item

ISBN: 9780124159310


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