Literature DB >> 15672284

A thermostable glucoamylase from a thermophilic Bacillus sp.: characterization and thermostability.

Rupinder K Gill1, Jagdeep Kaur.   

Abstract

A thermostable glucoamylase (GA) showed optimum activity at 70 degrees C and pH 5.0. It was highly stable at pH 7.0. The half-life of the enzyme at pH 7.0 was 13, 8, and 3 h 40 min at 60, 65, and 70 degrees C respectively. The residual activity of the enzyme sample incubated at 5 psi (110 degrees C) for 30 min was about 32% of the control set (incubated at 4 degrees C), while no activity was observed at 10 and 15 psi. The thermostability of the enzyme was enhanced twofold in the presence of 0.5% (w/v) starch at 5 psi. Thin-layer chromatography indicated that this enzyme is a GA.

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Year:  2004        PMID: 15672284     DOI: 10.1007/s10295-004-0185-y

Source DB:  PubMed          Journal:  J Ind Microbiol Biotechnol        ISSN: 1367-5435            Impact factor:   3.346


  8 in total

Review 1.  Advances in microbial amylases.

Authors:  A Pandey; P Nigam; C R Soccol; V T Soccol; D Singh; R Mohan
Journal:  Biotechnol Appl Biochem       Date:  2000-04       Impact factor: 2.431

2.  The action of an amyloglucosidase of Aspergillus niger on starch and malto-oligosaccharides.

Authors:  J H PAZUR; T ANDO
Journal:  J Biol Chem       Date:  1959-08       Impact factor: 5.157

3.  General Biochemical Characterization of Thermostable Pullulanase and Glucoamylase from Clostridium thermohydrosulfuricum.

Authors:  H H Hyun; J G Zeikus
Journal:  Appl Environ Microbiol       Date:  1985-05       Impact factor: 4.792

Review 4.  Starch-hydrolyzing enzymes from thermophilic archaea and bacteria.

Authors:  Costanzo Bertoldo; Garabed Antranikian
Journal:  Curr Opin Chem Biol       Date:  2002-04       Impact factor: 8.822

5.  Thermostable glucose-tolerant glucoamylase produced by the thermophilic fungus Scytalidium thermophilum.

Authors:  A C Aquino; J A Jorge; H F Terenzi; M L Polizeli
Journal:  Folia Microbiol (Praha)       Date:  2001       Impact factor: 2.099

6.  Purification and properties of an amylopullulanase, a glucoamylase, and an alpha-glucosidase in the amylolytic enzyme system of Thermoanaerobacterium thermosaccharolyticum.

Authors:  D Ganghofner; J Kellermann; W L Staudenbauer; K Bronnenmeier
Journal:  Biosci Biotechnol Biochem       Date:  1998-02       Impact factor: 2.043

7.  Cloning, heterologous expression, and enzymatic characterization of a thermostable glucoamylase from Talaromyces emersonii.

Authors:  Bjarne R Nielsen; Jan Lehmbeck; Torben P Frandsen
Journal:  Protein Expr Purif       Date:  2002-10       Impact factor: 1.650

8.  Purification and kinetics of a raw starch-hydrolyzing, thermostable, and neutral glucoamylase of the thermophilic mold Thermomucor indicae-seudaticae.

Authors:  Sanjeev Kumar; T Satyanarayana
Journal:  Biotechnol Prog       Date:  2003 May-Jun
  8 in total

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