Cold shock induction of recombinant Arctic environmental genes
Published Version, also available at http://dx.doi.org/10.1186/s12896-015-0185-1 Background: Heterologous expression of psychrophilic enzymes in E. coli is particularly challenging due to their intrinsic instability. The low stability is regarded as a consequence of adaptation that allow them to fun...
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Online Access: | https://hdl.handle.net/10037/8752 https://doi.org/10.1186/s12896-015-0185-1 |
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ftunivtroemsoe:oai:munin.uit.no:10037/8752 2023-05-15T15:00:00+02:00 Cold shock induction of recombinant Arctic environmental genes Bjerga, Gro Elin Kjæreng Williamson, Adele Kim 2015-08-19 https://hdl.handle.net/10037/8752 https://doi.org/10.1186/s12896-015-0185-1 eng eng BioMed Central Norges forskningsråd: 192123 BMC Biotechnology (2015) 15:78 FRIDAID 1286160 doi:10.1186/s12896-015-0185-1 1472-6750 https://hdl.handle.net/10037/8752 URN:NBN:no-uit_munin_8331 openAccess cspA promoter Heterologous expression Fusion partner Restriction-free cloning Cold-adapted Metagenomic DNA VDP::Matematikk og Naturvitenskap: 400::Basale biofag: 470::Generell mikrobiologi: 472 VDP::Mathematics and natural science: 400::Basic biosciences: 470::General microbiology: 472 Journal article Tidsskriftartikkel Peer reviewed 2015 ftunivtroemsoe https://doi.org/10.1186/s12896-015-0185-1 2021-06-25T17:54:37Z Published Version, also available at http://dx.doi.org/10.1186/s12896-015-0185-1 Background: Heterologous expression of psychrophilic enzymes in E. coli is particularly challenging due to their intrinsic instability. The low stability is regarded as a consequence of adaptation that allow them to function at low temperatures. Recombinant production presents a significant barrier to their exploitation for commercial applications in industry. Methods: As part of an enzyme discovery project we have investigated the utility of a cold-shock inducible promoter for low-temperature expression of five diverse genes derived from the metagenomes of marine Arctic sediments. After evaluation of their production, we further optimized for soluble production by building a vector suite from which the environmental genes could be expressed as fusions with solubility tags. Results: We found that the low-temperature optimized system produced high expression levels for all putatively cold-active proteins, as well as reducing host toxicity for several candidates. As a proof of concept, activity assays with one of the candidates, a putative chitinase, showed that functional protein was obtained using the lowtemperature optimized vector suite. Conclusions: We conclude that a cold-shock inducible system is advantageous for the heterologous expression of psychrophilic proteins, and may also be useful for expression of toxic mesophilic and thermophilic proteins where properties of the proteins are deleterious to the host cell growth. Article in Journal/Newspaper Arctic University of Tromsø: Munin Open Research Archive Arctic BMC Biotechnology 15 1 |
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Open Polar |
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University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
cspA promoter Heterologous expression Fusion partner Restriction-free cloning Cold-adapted Metagenomic DNA VDP::Matematikk og Naturvitenskap: 400::Basale biofag: 470::Generell mikrobiologi: 472 VDP::Mathematics and natural science: 400::Basic biosciences: 470::General microbiology: 472 |
spellingShingle |
cspA promoter Heterologous expression Fusion partner Restriction-free cloning Cold-adapted Metagenomic DNA VDP::Matematikk og Naturvitenskap: 400::Basale biofag: 470::Generell mikrobiologi: 472 VDP::Mathematics and natural science: 400::Basic biosciences: 470::General microbiology: 472 Bjerga, Gro Elin Kjæreng Williamson, Adele Kim Cold shock induction of recombinant Arctic environmental genes |
topic_facet |
cspA promoter Heterologous expression Fusion partner Restriction-free cloning Cold-adapted Metagenomic DNA VDP::Matematikk og Naturvitenskap: 400::Basale biofag: 470::Generell mikrobiologi: 472 VDP::Mathematics and natural science: 400::Basic biosciences: 470::General microbiology: 472 |
description |
Published Version, also available at http://dx.doi.org/10.1186/s12896-015-0185-1 Background: Heterologous expression of psychrophilic enzymes in E. coli is particularly challenging due to their intrinsic instability. The low stability is regarded as a consequence of adaptation that allow them to function at low temperatures. Recombinant production presents a significant barrier to their exploitation for commercial applications in industry. Methods: As part of an enzyme discovery project we have investigated the utility of a cold-shock inducible promoter for low-temperature expression of five diverse genes derived from the metagenomes of marine Arctic sediments. After evaluation of their production, we further optimized for soluble production by building a vector suite from which the environmental genes could be expressed as fusions with solubility tags. Results: We found that the low-temperature optimized system produced high expression levels for all putatively cold-active proteins, as well as reducing host toxicity for several candidates. As a proof of concept, activity assays with one of the candidates, a putative chitinase, showed that functional protein was obtained using the lowtemperature optimized vector suite. Conclusions: We conclude that a cold-shock inducible system is advantageous for the heterologous expression of psychrophilic proteins, and may also be useful for expression of toxic mesophilic and thermophilic proteins where properties of the proteins are deleterious to the host cell growth. |
format |
Article in Journal/Newspaper |
author |
Bjerga, Gro Elin Kjæreng Williamson, Adele Kim |
author_facet |
Bjerga, Gro Elin Kjæreng Williamson, Adele Kim |
author_sort |
Bjerga, Gro Elin Kjæreng |
title |
Cold shock induction of recombinant Arctic environmental genes |
title_short |
Cold shock induction of recombinant Arctic environmental genes |
title_full |
Cold shock induction of recombinant Arctic environmental genes |
title_fullStr |
Cold shock induction of recombinant Arctic environmental genes |
title_full_unstemmed |
Cold shock induction of recombinant Arctic environmental genes |
title_sort |
cold shock induction of recombinant arctic environmental genes |
publisher |
BioMed Central |
publishDate |
2015 |
url |
https://hdl.handle.net/10037/8752 https://doi.org/10.1186/s12896-015-0185-1 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
Norges forskningsråd: 192123 BMC Biotechnology (2015) 15:78 FRIDAID 1286160 doi:10.1186/s12896-015-0185-1 1472-6750 https://hdl.handle.net/10037/8752 URN:NBN:no-uit_munin_8331 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1186/s12896-015-0185-1 |
container_title |
BMC Biotechnology |
container_volume |
15 |
container_issue |
1 |
_version_ |
1766332105704341504 |