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Glycoconjugate Journal

, Volume 35, Issue 4, pp 403–409 | Cite as

A rapid and effective method for purification of a heat-resistant lectin from potato (Solanum tuberosum) tubers

  • Yun Feng
  • Jintian Song
  • Zixuan Zhao
  • Feiyi Zhao
  • Lingjuan Yang
  • Chengjin Jiao
Short Communication
  • 55 Downloads

Abstract

The potato lectin has been identified to consist of two chitin-binding modules, each containing twin hevein domains. Based on the thermotolerance of the hevein polypeptide, a simple, rapid, and effective protocol for the small-scale purification of the potato lectin has been developed in this study. The method involves only one anion exchange chromatographic step beyond the ammonium sulfate precipitation and the heating treatment. With this method, the potato lectin, a glycoprotein with molecular mass of approximately 60 kDa was found and purified to homogeneity with 9513.3 u/mg of specific hemagglutination (HA) activity in 76.8% yield. The homogeneity was confirmed by SDS-PAGE electrophoresis and reverse-phase HPLC analysis. The purified lectin was identified using MS-based peptide sequencing (MALDI-TOF/TOF) and showed a 100% Confidence Interval as being homologous to hevein domains in potato lectin. The periodic acid-Schiff staining and ferric-orcinol assay for pentose, as well as its HA activity inhibition by chitosan oligomers further confirmed the purified lectin as a potato chitin-binding lectin. It is noteworthy that the purified potato lectin exhibited heat resistance, by which, together with a short time precipitation by ammonium sulfate, more than 96% of the total proteins in the crude extract were removed. The lectin therefore was easily resolved from the other remining proteins on a DEAE-methyl polyacrylate column.

Keywords

Potato lectin Hevein domain-containing glycoprotein Thermotolerance Anion exchange chromatography 

Notes

Acknowledgments

We would like to thank all the members of the Institute of Sulfur Biotechnology in Tianshui Normal University for the help and concern. I would like to give special thanks to Yu-qing Li, Shan Cai, Fei-na Wang, Jun-li me, Guo-xia Qiao, and Jin-qiang Wang et al. for participating in some preliminary experiments in this study. This work was supported by the National Natural Science Foundation of China (Grant no. 31660153 to Cheng-jin Jiao) and the Undergraduate Innovation Project of Tianshui Normal University.

Compliance with ethical standards

Conflict of interest

The authors declare no conflict of interest.

Ethical approval

This article does not contain any studies with human participants or animals performed by any of the authors.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Yun Feng
    • 1
    • 2
  • Jintian Song
    • 1
    • 2
  • Zixuan Zhao
    • 1
    • 2
  • Feiyi Zhao
    • 1
    • 2
  • Lingjuan Yang
    • 2
    • 3
  • Chengjin Jiao
    • 1
    • 2
  1. 1.School of Bioengineering and BiotechnologyTianshui Normal UniversityTianshuiPeople’s Republic of China
  2. 2.Institute of Sulfur BiotechnologyTianshui Normal UniversityTianshuiPeople’s Republic of China
  3. 3.School of Chemical Engineering and TechnologyTianshui Normal UniversityTianshuiPeople’s Republic of China

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