dc.contributor.author |
Simpson, C
|
|
dc.contributor.author |
Jordaan, J
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|
dc.contributor.author |
Whiteley, C
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dc.contributor.author |
Gardiner, NS
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dc.date.accessioned |
2007-06-29T07:57:48Z |
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dc.date.available |
2007-06-29T07:57:48Z |
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dc.date.issued |
2007-02 |
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dc.identifier.citation |
Simpson C et al. 2007. Isolation, purification and characterization of a novel glucose oxidase from Penicillium sp. CBS 120262 optimally active at neutral pH. Protein Expression and Purification, Vol 51(2), pp 260-266 |
en |
dc.identifier.issn |
1046-5928 |
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dc.identifier.uri |
http://hdl.handle.net/10204/759
|
|
dc.description |
http://0-www.sciencedirect.com.innopac.up.ac.za/science/journal/10465928 |
en |
dc.description.abstract |
A novel glucose oxidase (GOX), a Xavoenzyme, from Penicillium sp. was isolated, purified and partially characterised. Maximum activities of 1.08Umg‾1dry weight intracellular and 6.9Uml‾1 extracellular GOX were obtained. Isoelectric focussing revealed two iso-enzymes present in both intra- and extracellular fractions, having pI’s of 4.30 and 4.67. GOX from Penicillium sp. was shown to be dimeric with a molecular weight of 148 kDa, consisting of two equal subunits with molecular weight of 70 kDa. The enzyme displayed a temperature optimum between 25 and 30 °C, and an optimum pH range of 6–8 for the oxidation of Beta-D-glucose. The enzyme was stable at 25 °C for a minimum of 10 h, with a half-life of approximately 30min at 37 °C without any prior stabilisation. The lyophilized enzyme was stable at -20 °C for a minimum of 6 months. GOX from Penicillium sp. Tt42 displayed the following kinetic characteristics: Vmax, 240.5Umg‾1; Km, 18.4mM; kcat, 741 s‾1 and kcat/Km, 40 s‾1mM‾1. Stability at room temperature, good shelf-life without stabilisation and the neutral range for the pH optimum of this GOX contribute to its usefulness in current GOX-based biosensor applications. |
en |
dc.language.iso |
en |
en |
dc.publisher |
Academic Press Inc Elsevier Science |
en |
dc.subject |
Glucose oxidase |
en |
dc.subject |
Flavoenzyme |
en |
dc.subject |
Penicillium sp |
en |
dc.subject |
Biosensor application |
en |
dc.title |
Isolation, purification and characterization of a novel glucose oxidase from Penicillium sp. CBS 120262 optimally active at neutral pH |
en |
dc.type |
Article |
en |
dc.identifier.apacitation |
Simpson, C., Jordaan, J., Whiteley, C., & Gardiner, N. (2007). Isolation, purification and characterization of a novel glucose oxidase from Penicillium sp. CBS 120262 optimally active at neutral pH. http://hdl.handle.net/10204/759 |
en_ZA |
dc.identifier.chicagocitation |
Simpson, C, J Jordaan, C Whiteley, and NS Gardiner "Isolation, purification and characterization of a novel glucose oxidase from Penicillium sp. CBS 120262 optimally active at neutral pH." (2007) http://hdl.handle.net/10204/759 |
en_ZA |
dc.identifier.vancouvercitation |
Simpson C, Jordaan J, Whiteley C, Gardiner N. Isolation, purification and characterization of a novel glucose oxidase from Penicillium sp. CBS 120262 optimally active at neutral pH. 2007; http://hdl.handle.net/10204/759. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Simpson, C
AU - Jordaan, J
AU - Whiteley, C
AU - Gardiner, NS
AB - A novel glucose oxidase (GOX), a Xavoenzyme, from Penicillium sp. was isolated, purified and partially characterised. Maximum activities of 1.08Umg‾1dry weight intracellular and 6.9Uml‾1 extracellular GOX were obtained. Isoelectric focussing revealed two iso-enzymes present in both intra- and extracellular fractions, having pI’s of 4.30 and 4.67. GOX from Penicillium sp. was shown to be dimeric with a molecular weight of 148 kDa, consisting of two equal subunits with molecular weight of 70 kDa. The enzyme displayed a temperature optimum between 25 and 30 °C, and an optimum pH range of 6–8 for the oxidation of Beta-D-glucose. The enzyme was stable at 25 °C for a minimum of 10 h, with a half-life of approximately 30min at 37 °C without any prior stabilisation. The lyophilized enzyme was stable at -20 °C for a minimum of 6 months. GOX from Penicillium sp. Tt42 displayed the following kinetic characteristics: Vmax, 240.5Umg‾1; Km, 18.4mM; kcat, 741 s‾1 and kcat/Km, 40 s‾1mM‾1. Stability at room temperature, good shelf-life without stabilisation and the neutral range for the pH optimum of this GOX contribute to its usefulness in current GOX-based biosensor applications.
DA - 2007-02
DB - ResearchSpace
DP - CSIR
KW - Glucose oxidase
KW - Flavoenzyme
KW - Penicillium sp
KW - Biosensor application
LK - https://researchspace.csir.co.za
PY - 2007
SM - 1046-5928
T1 - Isolation, purification and characterization of a novel glucose oxidase from Penicillium sp. CBS 120262 optimally active at neutral pH
TI - Isolation, purification and characterization of a novel glucose oxidase from Penicillium sp. CBS 120262 optimally active at neutral pH
UR - http://hdl.handle.net/10204/759
ER -
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en_ZA |