Document Detail


Effect of oxygen supply on metabolism of immobilized and suspended Escherichia coli.
MedLine Citation:
PMID:  18629836     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
The effect of reduced oxygen supply on the production of a recombinant protein (plasmid-encoded beta-galactosidase) was investigated in Escherichia coli. A novel modified bubble tank reactor was used to provide a direct comparison between immobilized and suspended cells in identical environments except for the immobilization matrix. Decreased oxygen supply led to increased beta-galactosidase synthesis by both immobilized and suspended cells. Immobilized cells produced similar amounts of beta-galactosidase as the suspended cells. Lactose consumption and acetate production, on a per cell basis, were significantly higher in immobilized cells, suggesting that immobilized cells utilized fermentative metabolism. However, a transport analysis of the immobilized cell system showed that immobilized cells were not subject to either external or internal mass transfer gradients.
Authors:
E Inanç; J E Miller; D Dibiasio
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Biotechnology and bioengineering     Volume:  51     ISSN:  0006-3592     ISO Abbreviation:  Biotechnol. Bioeng.     Publication Date:  1996 Sep 
Date Detail:
Created Date:  2008-07-16     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7502021     Medline TA:  Biotechnol Bioeng     Country:  United States    
Other Details:
Languages:  eng     Pagination:  697-702     Citation Subset:  -    
Affiliation:
Department of Molecular Biology and Genetics, Bilkent University, 06533 Bilkent, Ankara, Turkey.
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