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The C-type lysozyme from the upper gastrointestinal tract of Opisthocomus hoatzin, the stinkbird

DOI: 10.3390/ijms20225531 DOI Help

Authors: Edward J. Taylor (The University of York) , Michael Skjøt (Novozymes A/S) , Lars K. Skov (Novozymes A/S) , Mikkel Klausen (Novozymes A/S) , Leonardo De Maria (Novozymes A/S) , Garry P. Gippert (Novozymes A/S) , Johan P. Turkenburg (The University of York) , Gideon J. Davies (The University of York) , Keith S. Wilson (The University of York)
Co-authored by industrial partner: Yes

Type: Journal Paper
Journal: International Journal Of Molecular Sciences , VOL 20

State: Published (Approved)
Published: November 2019
Diamond Proposal Number(s): 306 , 7864

Open Access Open Access

Abstract: Muramidases/lysozymes are important bio-molecules, which cleave the glycan backbone in the peptidoglycan polymer found in bacterial cell walls. The glycoside hydrolase (GH) family 22 C-type lysozyme, from the folivorous bird Opisthocomus hoazin (stinkbird), was expressed in Aspergillus oryzae, and a set of variants was produced. All variants were enzymatically active, including those designed to probe key differences between the Hoatzin enzyme and Hen Egg White lysozyme. Four variants showed improved thermostability at pH 4.7, compared to the wild type. The X-ray structure of the enzyme was determined in the apo form and in complex with chitin oligomers. Bioinformatic analysis of avian GH22 amino acid sequences showed that they separate out into three distinct subgroups (chicken-like birds, sea birds and other birds). The Hoatzin is found in the “other birds” group and we propose that this represents a new cluster of avian upper-gut enzymes.

Journal Keywords: lysozyme; peptidoglycan cleavage; avian gut GH22; crystal structure

Diamond Keywords: Enzymes; Animal Feed

Subject Areas: Biology and Bio-materials, Chemistry

Instruments: I02-Macromolecular Crystallography , I04-Macromolecular Crystallography

Added On: 20/11/2019 09:34


Discipline Tags:

Catalysis Life Sciences & Biotech Structural biology Chemistry Biochemistry

Technical Tags:

Diffraction Macromolecular Crystallography (MX)