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A simple, efficient and rapid screening technique for differentiating nitrile hydratase and nitrilase producing bacteria
Nitrile hydrolyzing enzymes catalyze the hydration of nitrile compounds to corresponding amides and acids. Bacteria, isolated from soil samples were screened for nitrile hydrolyzing enzymes by simple dye based 96 well plate and nesslerization method. Bromothymol blue was used as an indicator for the...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6881679/ https://www.ncbi.nlm.nih.gov/pubmed/31799145 http://dx.doi.org/10.1016/j.btre.2019.e00396 |
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author | Sahu, Ruchi Meghavarnam, Anil Kumar Janakiraman, Savitha |
author_facet | Sahu, Ruchi Meghavarnam, Anil Kumar Janakiraman, Savitha |
author_sort | Sahu, Ruchi |
collection | PubMed |
description | Nitrile hydrolyzing enzymes catalyze the hydration of nitrile compounds to corresponding amides and acids. Bacteria, isolated from soil samples were screened for nitrile hydrolyzing enzymes by simple dye based 96 well plate and nesslerization method. Bromothymol blue was used as an indicator for the detection of amides and acids based on colour change of the indicator dye from blue to dark green or yellow. The screening assay also differentiates between nitrile hydratase (NHase) and nitrilase producing bacteria. Among the 108 bacterial strains screened for enzyme activity, six strains were positive for NHase activity and eleven strains were positive for nitrilase activity based on their ability to degrade acrylonitrile into products. The strain showing maximum NHase activity in quantitative assay was identified as Rhodococcus rhodochrous. The modified method developed by us would be useful for rapid screening of nitrile degrading bacteria potent for acrylamide/acrylic acid production when acrylonitrile is supplied as substrate. |
format | Online Article Text |
id | pubmed-6881679 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-68816792019-12-03 A simple, efficient and rapid screening technique for differentiating nitrile hydratase and nitrilase producing bacteria Sahu, Ruchi Meghavarnam, Anil Kumar Janakiraman, Savitha Biotechnol Rep (Amst) Research Article Nitrile hydrolyzing enzymes catalyze the hydration of nitrile compounds to corresponding amides and acids. Bacteria, isolated from soil samples were screened for nitrile hydrolyzing enzymes by simple dye based 96 well plate and nesslerization method. Bromothymol blue was used as an indicator for the detection of amides and acids based on colour change of the indicator dye from blue to dark green or yellow. The screening assay also differentiates between nitrile hydratase (NHase) and nitrilase producing bacteria. Among the 108 bacterial strains screened for enzyme activity, six strains were positive for NHase activity and eleven strains were positive for nitrilase activity based on their ability to degrade acrylonitrile into products. The strain showing maximum NHase activity in quantitative assay was identified as Rhodococcus rhodochrous. The modified method developed by us would be useful for rapid screening of nitrile degrading bacteria potent for acrylamide/acrylic acid production when acrylonitrile is supplied as substrate. Elsevier 2019-11-15 /pmc/articles/PMC6881679/ /pubmed/31799145 http://dx.doi.org/10.1016/j.btre.2019.e00396 Text en © 2019 The Authors http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Research Article Sahu, Ruchi Meghavarnam, Anil Kumar Janakiraman, Savitha A simple, efficient and rapid screening technique for differentiating nitrile hydratase and nitrilase producing bacteria |
title | A simple, efficient and rapid screening technique for differentiating nitrile hydratase and nitrilase producing bacteria |
title_full | A simple, efficient and rapid screening technique for differentiating nitrile hydratase and nitrilase producing bacteria |
title_fullStr | A simple, efficient and rapid screening technique for differentiating nitrile hydratase and nitrilase producing bacteria |
title_full_unstemmed | A simple, efficient and rapid screening technique for differentiating nitrile hydratase and nitrilase producing bacteria |
title_short | A simple, efficient and rapid screening technique for differentiating nitrile hydratase and nitrilase producing bacteria |
title_sort | simple, efficient and rapid screening technique for differentiating nitrile hydratase and nitrilase producing bacteria |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6881679/ https://www.ncbi.nlm.nih.gov/pubmed/31799145 http://dx.doi.org/10.1016/j.btre.2019.e00396 |
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