Crystal structure of a novel two domain GH78 family α-rhamnosidase from

DOI: 10.1002/prot.24807
PMID: 25846411

Authors: Ellis C. O'neill (John Innes Centre) , Clare Stevenson (John Innes Centre) , Michael J. Paterson (John Innes Centre) , Martin Rejzek (John Innes Centre) , Anne-laure Chauvin (Laboratorio Nacional De Genómica Para La Biodiversidad (Langebio)) , David Lawson (John Innes Centre) , Robert A. Field (John Innes Centre)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Proteins: Structure, Function, And Bioinformatics , VOL 83 (9) , PAGES 1742 - 1749

State: Published (Approved)
Published: September 2015
Diamond Proposal Number(s): 7641

Abstract: The crystal structure of the GH78 family α-rhamnosidase from Klebsiella oxytoca (KoRha) has been determined at 2.7 Å resolution with rhamnose bound in the active site of the catalytic domain. Curiously, the putative catalytic acid, Asp 222, is preceded by an unusual non-proline cis-peptide bond which helps to project the carboxyl group into the active centre. This KoRha homodimeric structure is significantly smaller than those of the other previously determined GH78 structures. Nevertheless, the enzyme displays α-rhamnosidase activity when assayed in vitro, suggesting that the additional structural domains found in the related enzymes are dispensible for function. Proteins 2015; 83:1742–1749. © 2015 The Authors. Proteins: Structure, Function, and Bioinformatics Published by Wiley Periodicals, Inc.

Journal Keywords: ?-L-Rhamnosidase; Glycosyl Hydrolase Family 78; Enzyme Structure; Flavonoid; Rutin; E.C. 3.2.1.40

Subject Areas: Biology and Bio-materials


Instruments: I04-1-Macromolecular Crystallography (fixed wavelength) , I24-Microfocus Macromolecular Crystallography

Added On: 20/11/2015 14:49

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