An expansin from the marine bacterium Hahella chejuensis acts synergistically with xylanase and enhances xylan hydrolysis

Hee Jin Lee, In Jung Kim, Jihyun F. Kim, In-Geol Choi, Kyoung Heon Kim

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

HcEXLX2 is a bacterial expansin found in a marine bacterium, Hahella chejuensis. Previously, HcEXLX2 was reported to act synergistically with a commercial cellulase preparation on the cellulose hydrolysis. The aim of the present study was to investigate the possible synergistic activity of HcEXLX2 with an endo-type xylanase from Saccharophagus degradans 2-40T (Xyn10C) in the hydrolysis of xylan. When 160μg of HcEXLX2 was incubated with 12μg of Xyn10C, the yield of reducing sugar increased 3.1 times when compared to that without HcEXLX2. The optimal temperature and pH for the synergism of HcEXLX2 with Xyn10C were 30°C and pH 7, respectively. In addition, binding experiments revealed that HcEXLX2 binds to xylan more preferentially than to Avicel. These results imply that HcEXLX2 could be used as an accessory protein to boost the activity of xylanase if its synergistic effect is strengthened at lower dosages.

Original languageEnglish
JournalBioresource Technology
Volume149
DOIs
Publication statusPublished - 2013 Dec 1

Fingerprint

Xylans
Cellulose
hydrolysis
Hydrolysis
Bacteria
bacterium
synergism
Cellulase
Accessories
Sugars
cellulose
sugar
Proteins
protein
experiment
temperature
Experiments
Temperature
dosage
effect

Keywords

  • Bacterial expansin
  • Hahella chejuensis
  • Synergism
  • Xylan hydrolysis

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Waste Management and Disposal

Cite this

An expansin from the marine bacterium Hahella chejuensis acts synergistically with xylanase and enhances xylan hydrolysis. / Lee, Hee Jin; Kim, In Jung; Kim, Jihyun F.; Choi, In-Geol; Kim, Kyoung Heon.

In: Bioresource Technology, Vol. 149, 01.12.2013.

Research output: Contribution to journalArticle

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AU - Kim, Kyoung Heon

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