Role of the cell surface-exposed regions of outer membrane protein PhoE of Escherichia coli K12 in the biogenesis of the protein

1989 ◽  
Vol 185 (2) ◽  
pp. 365-370 ◽  
Author(s):  
Marja AGTERBERG ◽  
Henriette ADRIAANSE ◽  
Edwin TIJHAAR ◽  
Annelies RESINK ◽  
Jan TOMMASSEN
Keyword(s):  
Escherichia Coli ◽  
Membrane Protein ◽  
Cell Surface ◽  
Outer Membrane ◽  
Outer Membrane Protein ◽  
Escherichia Coli K12

Role of outer membrane protein T in pathogenicity of avian pathogenic Escherichia coli

2017 ◽  
Vol 115 ◽  
pp. 109-116 ◽  
Author(s):  
Hassan M.A. Hejair ◽  
Jiale Ma ◽  
Yingchu Zhu ◽  
Min Sun ◽  
Wenyang Dong ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Membrane Protein ◽  
Outer Membrane ◽  
Outer Membrane Protein ◽  
Avian Pathogenic Escherichia Coli ◽  
Pathogenic Escherichia Coli

scholarly journals Physiological Characterization of SusG, an Outer Membrane Protein Essential for Starch Utilization byBacteroides thetaiotaomicron

1999 ◽  
Vol 181 (23) ◽  
pp. 7206-7211 ◽  
Author(s):  
Joseph A. Shipman ◽  
Kyu Hong Cho ◽  
Hilary A. Siegel ◽  
Abigail A. Salyers
Keyword(s):  
Membrane Protein ◽  
Cell Surface ◽  
Outer Membrane ◽  
Outer Membrane Protein ◽  
Main Role ◽  
Binding Assays ◽  
Bacterial Surface ◽  
Physiological Characterization ◽  
Starch Utilization

ABSTRACT Results from previous studies had suggested that Bacteroides thetaiotaomicron utilizes starch by binding the polysaccharide to the bacterial surface and subsequently degrading the polymer by using cell-associated enzymes. Most of the starch-degrading activity was localized to the periplasm, but a portion appeared to be membrane associated. This raised the possibility that some breakdown might occur in the outer membrane prior to exposure of the polysaccharide to the periplasmic polysaccharide-degrading enzymes. In this study, we show that SusG, an outer membrane protein which has been shown genetically to be essential for starch utilization, has enzymatic activity. Results of protease accessibility experiments support the hypothesis that SusG is exposed on the cell surface. Results of [14C]starch binding assays, however, show that SusG plays a negligible role in binding of starch to the cell surface. Consistent with this, SusG has a relatively high Km for starch and by itself is not sufficient to allow cells to grow on starch or to bind starch. Hence, the main role of SusG is to hydrolyze starch, but the binding of starch to the cell surface is evidently mediated by other proteins presumably interacting with SusG.

meoA is the structural gene for outer membrane protein c of Escherichia coli K12

1979 ◽  
Vol 169 (2) ◽  
pp. 147-155 ◽  
Author(s):  
Loek van Alphen ◽  
Ben Lugtenberg ◽  
Ria van Boxtel ◽  
Anne-Marie Hack ◽  
Cornelis Verhoef ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Membrane Protein ◽  
Outer Membrane ◽  
Structural Gene ◽  
Outer Membrane Protein ◽  
Protein C ◽  
Escherichia Coli K12
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