Characterization of the surface properties of chitosanase under heat stress condition using aqueous two-phase systems and an immobilized-liposome sensor system

Ho Sup Jung, Hiroshi Umakoshi, Se Young Son, Toshinori Shimanouchi, Ryoichi Kuboi

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The surface properties of chitosanase from Storeptomyces griseus were characterized under heat stress conditions by using aqueous two-phase systems and by using an immobilized-liposome sensor. The surface net (HFS) and local hydrophobicities (LH), were first characterized by using the poly (ethylene glycol) (PEG) / dextran 100-200k (Dex) aqueous two-phase system at various temperatures (25-50°C). The LH values of dithiothreitol (DTT)-treated chitosanase showed a maximum at a specific temperature (45°C) while the HFS values gradually increased with increasing temperature from 40 to 50°C. At the same temperature conditions as above, the surface properties of chitosanase were also analyzed by using a sensor tip immobilized-liposome electrode. Similarly in the case of the variation of LH but not HFS, the detected signal (maxima in electric current) was maximized at 45°C, and a linear correlation between the LH values and the signal values of the new immobilized-liposome sensor system was obtained. It was thus found that the new sensor system was effective for the characterization of the surface properties and LH values, of proteins, as well as the aqueous two-phase system method.

Original languageEnglish
Pages (from-to)123-132
Number of pages10
JournalSolvent Extraction Research and Development
Volume10
Publication statusPublished - 2003
Externally publishedYes

Fingerprint

chitosanase
Liposomes
Hydrophobicity
Surface properties
Sensors
Polyethylene glycols
Temperature
Dextran
Dithiothreitol
Electric currents
Dextrans
Hot Temperature
Proteins
Electrodes

ASJC Scopus subject areas

  • Chemistry(all)
  • Filtration and Separation
  • Chemical Engineering(all)

Cite this

@article{d6481ae776954a98afcc14799308f2e7,
title = "Characterization of the surface properties of chitosanase under heat stress condition using aqueous two-phase systems and an immobilized-liposome sensor system",
abstract = "The surface properties of chitosanase from Storeptomyces griseus were characterized under heat stress conditions by using aqueous two-phase systems and by using an immobilized-liposome sensor. The surface net (HFS) and local hydrophobicities (LH), were first characterized by using the poly (ethylene glycol) (PEG) / dextran 100-200k (Dex) aqueous two-phase system at various temperatures (25-50°C). The LH values of dithiothreitol (DTT)-treated chitosanase showed a maximum at a specific temperature (45°C) while the HFS values gradually increased with increasing temperature from 40 to 50°C. At the same temperature conditions as above, the surface properties of chitosanase were also analyzed by using a sensor tip immobilized-liposome electrode. Similarly in the case of the variation of LH but not HFS, the detected signal (maxima in electric current) was maximized at 45°C, and a linear correlation between the LH values and the signal values of the new immobilized-liposome sensor system was obtained. It was thus found that the new sensor system was effective for the characterization of the surface properties and LH values, of proteins, as well as the aqueous two-phase system method.",
author = "Jung, {Ho Sup} and Hiroshi Umakoshi and Son, {Se Young} and Toshinori Shimanouchi and Ryoichi Kuboi",
year = "2003",
language = "English",
volume = "10",
pages = "123--132",
journal = "Solvent Extraction Research and Development",
issn = "1341-7215",
publisher = "Japan Association of Solvent Extraction",

}

TY - JOUR

T1 - Characterization of the surface properties of chitosanase under heat stress condition using aqueous two-phase systems and an immobilized-liposome sensor system

AU - Jung, Ho Sup

AU - Umakoshi, Hiroshi

AU - Son, Se Young

AU - Shimanouchi, Toshinori

AU - Kuboi, Ryoichi

PY - 2003

Y1 - 2003

N2 - The surface properties of chitosanase from Storeptomyces griseus were characterized under heat stress conditions by using aqueous two-phase systems and by using an immobilized-liposome sensor. The surface net (HFS) and local hydrophobicities (LH), were first characterized by using the poly (ethylene glycol) (PEG) / dextran 100-200k (Dex) aqueous two-phase system at various temperatures (25-50°C). The LH values of dithiothreitol (DTT)-treated chitosanase showed a maximum at a specific temperature (45°C) while the HFS values gradually increased with increasing temperature from 40 to 50°C. At the same temperature conditions as above, the surface properties of chitosanase were also analyzed by using a sensor tip immobilized-liposome electrode. Similarly in the case of the variation of LH but not HFS, the detected signal (maxima in electric current) was maximized at 45°C, and a linear correlation between the LH values and the signal values of the new immobilized-liposome sensor system was obtained. It was thus found that the new sensor system was effective for the characterization of the surface properties and LH values, of proteins, as well as the aqueous two-phase system method.

AB - The surface properties of chitosanase from Storeptomyces griseus were characterized under heat stress conditions by using aqueous two-phase systems and by using an immobilized-liposome sensor. The surface net (HFS) and local hydrophobicities (LH), were first characterized by using the poly (ethylene glycol) (PEG) / dextran 100-200k (Dex) aqueous two-phase system at various temperatures (25-50°C). The LH values of dithiothreitol (DTT)-treated chitosanase showed a maximum at a specific temperature (45°C) while the HFS values gradually increased with increasing temperature from 40 to 50°C. At the same temperature conditions as above, the surface properties of chitosanase were also analyzed by using a sensor tip immobilized-liposome electrode. Similarly in the case of the variation of LH but not HFS, the detected signal (maxima in electric current) was maximized at 45°C, and a linear correlation between the LH values and the signal values of the new immobilized-liposome sensor system was obtained. It was thus found that the new sensor system was effective for the characterization of the surface properties and LH values, of proteins, as well as the aqueous two-phase system method.

UR - http://www.scopus.com/inward/record.url?scp=2442428081&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=2442428081&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:2442428081

VL - 10

SP - 123

EP - 132

JO - Solvent Extraction Research and Development

JF - Solvent Extraction Research and Development

SN - 1341-7215

ER -