Preparation of dimerized polypeptide-carrying microspheres and purification of specific proteins bound to these microspheres

M. Hatakeyama, Y. Ogura, J. Sawada, Keiji Fujimoto, H. Handa, H. Kawaguchi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We have developed polypeptide-carrying microspheres for bioaffinity separation. The carrier microspheres were composed of a polystyrene core and a poly(glycidyl methacrylate) surface layer on which ethyleneglycol diglycidyl ether was introduced as a spacer. The epoxy group of the spacer's end was hydrolyzed. The hydroxy end group was then activated by tosyl(p-toluenesulfonyl) chloride. To tosyl-group-carrying microspheres, we immobilized a polypeptide, HT-Lys5-N236, which contains the carboxyl terminal region of transcription factor hGABP β, analyzed the structure of the polypeptide immobilized on the surface of microspheres and used these hybrid microspheres for the purification of N236-binding protein from HeLa cell nuclear extracts directly and from the fractions separated with a phosphocellulose column.

Original languageEnglish
Pages (from-to)41-49
Number of pages9
JournalColloids and Surfaces B: Biointerfaces
Volume10
Issue number1
DOIs
Publication statusPublished - 1997 Oct

Fingerprint

Polypeptides
polypeptides
Microspheres
purification
Purification
proteins
Proteins
spacers
Peptides
preparation
ethers
polystyrene
surface layers
chlorides
Transcription factors
Polystyrenes
Cell Extracts
HeLa Cells
Ether
Ethers

Keywords

  • Affinity purification
  • Dimerization
  • Microsphere
  • Polypeptide

ASJC Scopus subject areas

  • Biotechnology
  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry
  • Surfaces and Interfaces

Cite this

Preparation of dimerized polypeptide-carrying microspheres and purification of specific proteins bound to these microspheres. / Hatakeyama, M.; Ogura, Y.; Sawada, J.; Fujimoto, Keiji; Handa, H.; Kawaguchi, H.

In: Colloids and Surfaces B: Biointerfaces, Vol. 10, No. 1, 10.1997, p. 41-49.

Research output: Contribution to journalArticle

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