Evaluation of silica gel-immobilized phosphorylcholine columns for size exclusion chromatography and their application in the analysis of the subunit structures of fish-egg lectins

Y. Watanabe, M. Abolhassani, Y. Tojo, Y. Suda, K. Miyazawa, Y. Igarashi, K. Sakuma, T. Ogawa, K. Muramoto

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Columns of phosphorylcholine (PC) immobilized on silica gel were shown to be useful for size exclusion chromatography (SEC) of proteins. The columns provided good separation of proteins in 50 mM sodium phosphate buffer (pH 6.9) containing 0.25 M NaCl, and there was a linear relationship between the retention times and the logarithmic values of the molecular weights with a correlation coefficient (R2) of 0.978-0.992. The columns were used in analyzing the subunit structures of the rhamnose-binding lectins CSL1, CSL2, and CSL3, isolated from chum salmon (Oncorhynchus keta) eggs. Although the lectins, which are a group of carbohydrate-binding and hydrophobic proteins, behaved anomalously in SEC with conventional matrices, they could be eluted from the immobilized PC columns without non-size-related retention, thereby allowing their molecular weights to be reliably estimated.

Original languageEnglish
Pages (from-to)8563-8566
Number of pages4
JournalJournal of Chromatography A
Volume1216
Issue number48
DOIs
Publication statusPublished - 2009 Nov 27

Keywords

  • Column
  • Phosphorylcholine
  • Rhamnose-binding lectin
  • Size exclusion chromatography
  • Subunit structure

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Organic Chemistry

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