Dataset Information

Analysis of Escherichia coli CyDisCo proteome changes in response to the expression of scFv and the misfolded scFv

ABSTRACT: E. coli CyDisCo strain enables a high yield secretion of disulfide bond-containing proteins to the periplasm via Twin-arginine (Tat) pathway. Introducing two exogenous oxidases: the yeast sulfydryl oxidase (Erv1p) and human protein disulfide isomerase (PDI), the CyDisCo strain changes the cytoplasm into an oxidized environment, where the disulfide bonds can efficiently be formed. In this study, we analyzed the proteome changes upon the expression of disulfide bond-containing scFv and the misfolded scFv in the CyDisCo strain. The correctly folded protein is secreted to the periplasm, while the misfolded protein accumulates exclusively in the inclusion body fraction. We observed a high number of significant changes mostly in proteins associated with protein folding and degradation, oxidative stress, membrane transport and integrity.

INSTRUMENT(S):

ORGANISM(S): Escherichia Coli

SUBMITTER: Katarzyna Dolata

LAB HEAD: Katarzyna Dolata

PROVIDER: PXD010078 | Pride | 2019-02-18

REPOSITORIES: Pride

ACCESS DATA

Dataset's files

Source:

Items per page:

1 - 5 of 6

Publications

Comparative proteome analysis in an Escherichia coli CyDisCo strain identifies stress responses related to protein production, oxidative stress and accumulation of misfolded protein.

Guerrero Montero Isabel I Dolata Katarzyna Magdalena KM Schlüter Rabea R Malherbe Gilles G Sievers Susanne S Zühlke Daniela D Sura Thomas T Dave Emma E Riedel Katharina K Robinson Colin C

Microbial cell factories 20190129 1

<h4>Background</h4>The Twin-arginine translocation (Tat) pathway of Escherichia coli has great potential for the export of biopharmaceuticals to the periplasm due to its ability to transport folded proteins, and its proofreading mechanism that allows correctly folded proteins to translocate. Coupling the Tat-dependent protein secretion with the formation of disulfide bonds in the cytoplasm of E. coli CyDisCo provides a powerful platform for the production of industrially challenging proteins. In ...[more]

PMID: 30696436

Similar Datasets

Project description:Human histomonocytic U937 cells exhibit macrophage-like properties after phorbol ester stimulation. Accumulating evidence demonstrated that remarkable number of transcripts changed in their amount at total RNA levels. However, post-transcriptional regulation has not been fully elucidated in this model. Thus, we compared expression profiles between polysomal and cytoplasmic RNAs before and after phorbol 12-myristate 13-acetate stimulation (48h, 32nM). Table 1: Detailed description of the expression data of human histomonocytic cell line U937 cells. Data of total cytoplasmic and polysomal fractions before and after PMA stimulation is shown. This table contains all spot data except: 1) saturated spots, 2) undetectable spots, 3) stained spots, and 4) spots only detected in less than one samples. Column A: Gene symbol (âI_xxxxxxâ is corresponding to EST clones); Column B: Genbank accession no. Column C: Description; Column D: Average value of expression levels in total cytoplasmic fraction in the absence of PMA; Column E: Average value of expression levels in total cytoplasmic fraction in the presence of PMA (32nM, 48h); Column F: Average value of expression levels in polysomal fraction in the absence of PMA; Column G: Average value of expression levels in polysomal fraction in the presence of PMA; Column H: Expression ratio of polysome, PMA (-) to cytoplasm, PMA(-); Column I: Expression ratio of polysome, PMA (+) to cytoplasm, PMA(+); Column J: Expression ratio of cytoplasm, PMA (+) to cytoplasm, PMA(-); Column K: Expression ratio of polysome, PMA (+) to polysome, PMA(-); Column L: Different expression between polysome, PMA (-) and cytoplasm, PMA(-): different=1; Column M: Different expression between polysome, PMA (+) and cytoplasm, PMA(+): different=1; Column N: Different expression between cytoplasm, PMA (+) and cytoplasm, PMA(-): different=1; Column O: Different expression between polysome, PMA (+) and polysome, PMA(-): different=1; ; Table 2: Candidates post-transcriptionally regulated by PMA. We extracted 105 transcripts whose expression levels were altered only in either fraction accompanied by changes in polysome/cytoplasm expression ratio. Column A: Gene symbol (âI_xxxxxxâ is corresponding to EST clones); Column B: Genbank accession no. Column C: Description; Column D: Average value of expression levels in total cytoplasmic fraction in the absence of PMA; Column E Average value of expression levels in total cytoplasmic fraction in the presence of PMA; Column F: Average value of expression levels in polysomal fraction in the absence of PMA; Column G: Average value of expression levels in polysomal fraction in the presence of PMA; Column H: Expression ratio of polysome, PMA (-) to cytoplasm, PMA(-); Column I: Expression ratio of polysome, PMA (+) to cytoplasm, PMA(+); Column J: Expression ratio of cytoplasm, PMA (+) to cytoplasm, PMA(-); Column K: Expression ratio of polysome, PMA (+) to polysome, PMA(-)

			Action	DRS
	Cytoplasm.rar	Other
	E.colik12_hGH.fasta	Fasta
	Membrane.rar	Other
	Membraneparameters.xml	Xml
	Periplasm.rar	Other