Hydrophobic interaction chromatography on octyl sepharosean approach for one-step platform purification of cyclodextrin glucanotransferases

Premalatha Shetty, Smitha Bhat, J. L. Iyer, Srikant Shenoy, J. S. Pai, K. Satyamoorthy

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Cyclodextrin glucanotransferase (CGTase) from Bacillus circulans ATCC 21783 was concentrated by ultrafiltration and subsequently purified by hydrophobic interaction chromatography on Octyl Sepharose 4 fast flow. The matrix was able to bind selectively to the enzyme at a very low ammonium sulfate concentration of 0.67M and enzyme desorption was performed by decreasing gradient of the salt. The overall recovery was 80% with 689-fold purity. CGTases derived from four soil isolates and Toruzyme, the commercial preparation of CGTase, also bound to Octyl Sepharose under similar conditions at 0.67M and eluted at 0.55-0.5M of ammonium sulfate. Octyl Sepharose chromatography can thus be used as a platform approach for purification of CGTases from various bacterial sources. Long stretches of sequence predominated by hydrophobic amino acids are reportedly present in the starch binding domains of CGTases. Starch binding experiments indicated the binding of the enzymes to the octyl matrix through these domains.

Original languageEnglish
Pages (from-to)350-364
Number of pages15
JournalPreparative Biochemistry and Biotechnology
Volume41
Issue number4
DOIs
Publication statusPublished - 10-2011

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Chromatography
Hydrophobic and Hydrophilic Interactions
Purification
Ammonium Sulfate
Starch
Enzymes
Agarose Chromatography
Ultrafiltration
Bacilli
Bacillus
Desorption
Soil
Salts
Soils
Amino Acids
Recovery
octyl-sepharose CL-4B
cyclomaltodextrin glucanotransferase
Experiments

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Biotechnology

Cite this

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title = "Hydrophobic interaction chromatography on octyl sepharosean approach for one-step platform purification of cyclodextrin glucanotransferases",
abstract = "Cyclodextrin glucanotransferase (CGTase) from Bacillus circulans ATCC 21783 was concentrated by ultrafiltration and subsequently purified by hydrophobic interaction chromatography on Octyl Sepharose 4 fast flow. The matrix was able to bind selectively to the enzyme at a very low ammonium sulfate concentration of 0.67M and enzyme desorption was performed by decreasing gradient of the salt. The overall recovery was 80{\%} with 689-fold purity. CGTases derived from four soil isolates and Toruzyme, the commercial preparation of CGTase, also bound to Octyl Sepharose under similar conditions at 0.67M and eluted at 0.55-0.5M of ammonium sulfate. Octyl Sepharose chromatography can thus be used as a platform approach for purification of CGTases from various bacterial sources. Long stretches of sequence predominated by hydrophobic amino acids are reportedly present in the starch binding domains of CGTases. Starch binding experiments indicated the binding of the enzymes to the octyl matrix through these domains.",
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Hydrophobic interaction chromatography on octyl sepharosean approach for one-step platform purification of cyclodextrin glucanotransferases. / Shetty, Premalatha; Bhat, Smitha; Iyer, J. L.; Shenoy, Srikant; Pai, J. S.; Satyamoorthy, K.

In: Preparative Biochemistry and Biotechnology, Vol. 41, No. 4, 10.2011, p. 350-364.

Research output: Contribution to journalArticle

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