An Effective Bacterial Fucosidase for Glycoprotein Remodeling

ACS Chem Biol. 2017 Jan 20;12(1):63-72. doi: 10.1021/acschembio.6b00821. Epub 2016 Nov 18.

Abstract

Fucose is an important component of many oligo- and polysaccharide structures as well as glycoproteins and glycolipids, which are often associated with a variety of physiological processes ranging from fertilization, embryogenesis, signal transduction, and disease progression, such as rheumatoid arthritis, inflammation, and cancer. The enzyme α-l-fucosidase is involved in the cleavage of the fucosidic bond in glycans and glycoconjugates, particularly the Fuc-α-1,2-Gal, Fuc-α-1,3/4-GlcNAc, and Fuc-α-1,6-GlcNAc linkages. Here, we report a highly efficient fucosidase, designated as BfFucH identified from a library of bacterial glycosidases expressed in E. coli from the CAZy database, which is capable of hydrolyzing the aforementioned fucosidic linkages, especially the α-1,6-linkage from the N-linked Fuc-α-1,6-GlcNAc residue on glycoproteins. Using BfFucH coupled with endoglycosidases and the emerging glycosynthases allows glycoengineering of IgG antibodies to provide homogeneous glycoforms with well-defined glycan structures and optimal effector functions.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bacteria / enzymology*
  • Bacteria / metabolism
  • Escherichia coli / enzymology
  • Escherichia coli / metabolism
  • Fucose / chemistry
  • Fucose / metabolism*
  • Glycoconjugates / chemistry
  • Glycoconjugates / metabolism
  • Glycoproteins / chemistry
  • Glycoproteins / metabolism*
  • Humans
  • Immunoglobulin G / chemistry
  • Immunoglobulin G / metabolism*
  • Polysaccharides / chemistry
  • Polysaccharides / metabolism
  • Substrate Specificity
  • alpha-L-Fucosidase / metabolism*

Substances

  • Glycoconjugates
  • Glycoproteins
  • Immunoglobulin G
  • Polysaccharides
  • Fucose
  • alpha-L-Fucosidase