Purification and Characterization of Asparaginase from Phaseolus vulgaris Seeds

L-asparaginase from bacteria has been used in treatment of acute lymphoblastic leukemia. The aim of this study was to purify and characterize L-asparaginase from Phaseolus vulgaris seeds instead of microbial sources. L-asparaginase was purified to apparent homogeneity. The enzyme has molecular mass...

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Autores principales: Mohamed, Saleh A., Elshal, Mohamed F., Kumosani, Taha A., Aldahlawi, Alia M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4564614/
https://www.ncbi.nlm.nih.gov/pubmed/26413120
http://dx.doi.org/10.1155/2015/309214
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author Mohamed, Saleh A.
Elshal, Mohamed F.
Kumosani, Taha A.
Aldahlawi, Alia M.
author_facet Mohamed, Saleh A.
Elshal, Mohamed F.
Kumosani, Taha A.
Aldahlawi, Alia M.
author_sort Mohamed, Saleh A.
collection PubMed
description L-asparaginase from bacteria has been used in treatment of acute lymphoblastic leukemia. The aim of this study was to purify and characterize L-asparaginase from Phaseolus vulgaris seeds instead of microbial sources. L-asparaginase was purified to apparent homogeneity. The enzyme has molecular mass of 79 kDa. The purified asparaginase had very low activity toward a number of asparagine and glutamine analogues. L-asparaginase was free from glutaminase activity. Kinetic parameters, Km and Vmax of purified enzyme, were found to be 6.72 mM and 0.16 μM, respectively. The enzyme had optimum pH at 8.0. The enzyme showed high stability at alkaline pH (pH 7.5–9.0) when incubated for up to 24 h. L-asparaginase had the same temperature optimum and thermal stability at 37°C. K(+) was able to greatly enhance the activity of asparaginase by 150% compared with other metals tested. In conclusion, L-asparaginase showed no glutaminase activity and good stability over a wide range of physiological conditions, and thus it could be used as a potential candidate for treatment of acute lymphoblastic leukemia.
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spelling pubmed-45646142015-09-27 Purification and Characterization of Asparaginase from Phaseolus vulgaris Seeds Mohamed, Saleh A. Elshal, Mohamed F. Kumosani, Taha A. Aldahlawi, Alia M. Evid Based Complement Alternat Med Research Article L-asparaginase from bacteria has been used in treatment of acute lymphoblastic leukemia. The aim of this study was to purify and characterize L-asparaginase from Phaseolus vulgaris seeds instead of microbial sources. L-asparaginase was purified to apparent homogeneity. The enzyme has molecular mass of 79 kDa. The purified asparaginase had very low activity toward a number of asparagine and glutamine analogues. L-asparaginase was free from glutaminase activity. Kinetic parameters, Km and Vmax of purified enzyme, were found to be 6.72 mM and 0.16 μM, respectively. The enzyme had optimum pH at 8.0. The enzyme showed high stability at alkaline pH (pH 7.5–9.0) when incubated for up to 24 h. L-asparaginase had the same temperature optimum and thermal stability at 37°C. K(+) was able to greatly enhance the activity of asparaginase by 150% compared with other metals tested. In conclusion, L-asparaginase showed no glutaminase activity and good stability over a wide range of physiological conditions, and thus it could be used as a potential candidate for treatment of acute lymphoblastic leukemia. Hindawi Publishing Corporation 2015 2015-08-27 /pmc/articles/PMC4564614/ /pubmed/26413120 http://dx.doi.org/10.1155/2015/309214 Text en Copyright © 2015 Saleh A. Mohamed et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Mohamed, Saleh A.
Elshal, Mohamed F.
Kumosani, Taha A.
Aldahlawi, Alia M.
Purification and Characterization of Asparaginase from Phaseolus vulgaris Seeds
title Purification and Characterization of Asparaginase from Phaseolus vulgaris Seeds
title_full Purification and Characterization of Asparaginase from Phaseolus vulgaris Seeds
title_fullStr Purification and Characterization of Asparaginase from Phaseolus vulgaris Seeds
title_full_unstemmed Purification and Characterization of Asparaginase from Phaseolus vulgaris Seeds
title_short Purification and Characterization of Asparaginase from Phaseolus vulgaris Seeds
title_sort purification and characterization of asparaginase from phaseolus vulgaris seeds
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4564614/
https://www.ncbi.nlm.nih.gov/pubmed/26413120
http://dx.doi.org/10.1155/2015/309214
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