Glycoside Hydrolase family 30 harbors fungal subfamilies with distinct polysaccharide specificities

Xinxin Li, Dimitrios Kouzounis, Mirjam A Kabel, Ronald P de Vries, Adiphol Dilokpimol

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Efficient bioconversion of agro-industrial side streams requires a wide range of enzyme activities. Glycoside Hydrolase family 30 (GH30) is a diverse family that contains various catalytic functions and has so far been divided into ten subfamilies (GH30_1-10). In this study, a GH30 phylogenetic tree using over 150 amino acid sequences was contructed. The members of GH30 cluster into four subfamilies and eleven candidates from these subfamilies were selected for biochemical characterization. Novel enzyme activities were identified in GH30. GH30_3 enzymes possess β-(1→6)-glucanase activity. GH30_5 targets β-(1→6)-galactan with mainly β-(1→6)-galactobiohydrolase catalytic behavior. β-(1→4)-Xylanolytic enzymes belong to GH30_7 targeting β-(1→4)-xylan with several activities (e.g. xylobiohydrolase, endoxylanase). Additionally, a new fungal subfamily in GH30 was proposed, i.e. GH30_11, which displays β-(1→6)-galactobiohydrolase. This study confirmed that GH30 fungal subfamilies harbor distinct polysaccharide specificity and have high potential for the production of short (non-digestible) di- and oligosaccharides.

Original languageEnglish
Pages (from-to)32-41
Number of pages10
JournalNew Biotechnology
Volume67
DOIs
Publication statusPublished - 25 Mar 2022
MoE publication typeA1 Journal article-refereed

Keywords

  • Endoxylanase
  • Fungal subfamily
  • Glycoside Hydrolase family 30
  • β-(1→4)-xylobiohydrolase
  • β-(1→6)-galactobiohydrolase
  • β-(1→6)-glucanase

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