Characterization of a Lactococcus lactis promoter for heterologous protein production

Constitutively active promoter elements for heterologous protein production in Lactococcus lactis are scarce. Here, the promoter of the PTS-IIC gene cluster from L. lactis NZ3900 is described. This promoter was cloned upstream of an enhanced green fluorescent protein, GFPmut3a, and transformed into...

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Main Authors: Christian E. Ogaugwu, Qiuying Cheng, Annabeth Fieck, Ivy Hurwitz, Ravi Durvasula
Format: Article
Language:English
Published: Elsevier 2018-03-01
Series:Biotechnology Reports
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2215017X17300061
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author Christian E. Ogaugwu
Qiuying Cheng
Annabeth Fieck
Ivy Hurwitz
Ravi Durvasula
author_facet Christian E. Ogaugwu
Qiuying Cheng
Annabeth Fieck
Ivy Hurwitz
Ravi Durvasula
author_sort Christian E. Ogaugwu
collection DOAJ
description Constitutively active promoter elements for heterologous protein production in Lactococcus lactis are scarce. Here, the promoter of the PTS-IIC gene cluster from L. lactis NZ3900 is described. This promoter was cloned upstream of an enhanced green fluorescent protein, GFPmut3a, and transformed into L. lactis. Transformants produced up to 13.5 μg of GFPmut3a per milliliter of log phase cells. Addition of cellobiose further increased the production of GFPmut3a by up to two-fold when compared to glucose. Analysis of mutations at two specific positions in the PTS-IIC promoter showed that a ‘T’ to ‘G’ mutation within the −35 element resulted in constitutive expression in glucose, while a ‘C’ at nucleotide 7 in the putative cre site enhanced promoter activity in cellobiose. Finally, this PTS-IIC promoter is capable of mediating protein expression in Bacillus subtilis and Escherichia coli Nissle 1917, suggesting the potential for future biotechnological applications of this element and its derivatives.
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spelling doaj.art-34feb3f283f24cd0927f66c294ba62882022-12-21T17:16:03ZengElsevierBiotechnology Reports2215-017X2018-03-0117C869210.1016/j.btre.2017.11.010Characterization of a Lactococcus lactis promoter for heterologous protein productionChristian E. Ogaugwu0Qiuying Cheng1Annabeth Fieck2Ivy Hurwitz3Ravi Durvasula4New Mexico VA Health Care System, Albuquerque, NM, United StatesNew Mexico VA Health Care System, Albuquerque, NM, United StatesNew Mexico VA Health Care System, Albuquerque, NM, United StatesNew Mexico VA Health Care System, Albuquerque, NM, United StatesNew Mexico VA Health Care System, Albuquerque, NM, United StatesConstitutively active promoter elements for heterologous protein production in Lactococcus lactis are scarce. Here, the promoter of the PTS-IIC gene cluster from L. lactis NZ3900 is described. This promoter was cloned upstream of an enhanced green fluorescent protein, GFPmut3a, and transformed into L. lactis. Transformants produced up to 13.5 μg of GFPmut3a per milliliter of log phase cells. Addition of cellobiose further increased the production of GFPmut3a by up to two-fold when compared to glucose. Analysis of mutations at two specific positions in the PTS-IIC promoter showed that a ‘T’ to ‘G’ mutation within the −35 element resulted in constitutive expression in glucose, while a ‘C’ at nucleotide 7 in the putative cre site enhanced promoter activity in cellobiose. Finally, this PTS-IIC promoter is capable of mediating protein expression in Bacillus subtilis and Escherichia coli Nissle 1917, suggesting the potential for future biotechnological applications of this element and its derivatives.http://www.sciencedirect.com/science/article/pii/S2215017X17300061Lactococcus lactisHeterologous protein expressionPromoterProbiotics
spellingShingle Christian E. Ogaugwu
Qiuying Cheng
Annabeth Fieck
Ivy Hurwitz
Ravi Durvasula
Characterization of a Lactococcus lactis promoter for heterologous protein production
Biotechnology Reports
Lactococcus lactis
Heterologous protein expression
Promoter
Probiotics
title Characterization of a Lactococcus lactis promoter for heterologous protein production
title_full Characterization of a Lactococcus lactis promoter for heterologous protein production
title_fullStr Characterization of a Lactococcus lactis promoter for heterologous protein production
title_full_unstemmed Characterization of a Lactococcus lactis promoter for heterologous protein production
title_short Characterization of a Lactococcus lactis promoter for heterologous protein production
title_sort characterization of a lactococcus lactis promoter for heterologous protein production
topic Lactococcus lactis
Heterologous protein expression
Promoter
Probiotics
url http://www.sciencedirect.com/science/article/pii/S2215017X17300061
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