scholarly journals The rcsB gene, a positive regulator of colanic acid biosynthesis in Escherichia coli, is also an activator of ftsZ expression.

1992 ◽  
Vol 174 (12) ◽  
pp. 3964-3971 ◽  
Author(s):  
F G Gervais ◽  
P Phoenix ◽  
G R Drapeau
Keyword(s):  
Escherichia Coli ◽  
Acid Biosynthesis ◽  
Positive Regulator ◽  
Colanic Acid

scholarly journals Structural studies on colanic acid, the common exopolysaccharide found in the Enterobacteriaceae, by partial acid hydrolysis. Oligosaccharides from colanic acid

1969 ◽  
Vol 115 (5) ◽  
pp. 935-945 ◽  
Author(s):  
I. W. Sutherland
Keyword(s):  
Escherichia Coli ◽  
Salmonella Typhimurium ◽  
Pyruvic Acid ◽  
Glucuronic Acid ◽  
Periodate Oxidation ◽  
Structural Studies ◽  
Acid Biosynthesis ◽  
Partial Acid Hydrolysis ◽  
Colanic Acid ◽  
The Common

The exopolysaccharide slime colanic acid has been isolated from representative strains of Escherichia coli, Salmonella typhimurium and Aerobacter cloacae. Analysis showed that each polymer contained glucose, galactose, fucose and glucuronic acid, together with acetate and pyruvate. The molar proportions of these components were 1:1·8:1·9:1:1:1 approximately. On the basis of periodate oxidation of the natural and deacetylated polysaccharide, glucose is proposed as the site of the acetyl groups. The pyruvate is attached to galactose. Three neutral oligosaccharides and ten electrophoretically mobile oligosaccharides were isolated and partially characterized. Four of the fragments were esters of pyruvic acid. Most oligosaccharides were isolated from all three polysaccharide preparations. Three further oligosaccharides were isolated from carboxyl-reduced colanic acid and sodium borotritide was used to label the glucose derived from glucuronic acid in these fragments. One trisaccharide was obtained from periodate-oxidized polysaccharide. On the basis of these oligosaccharides a repeating hexasaccharide unit of the following structure is proposed: [Formula: see text] The significance of this structure in colanic acid biosynthesis is discussed.

scholarly journals Colanic acid biosynthesis in Escherichia coli is dependent on lipopolysaccharide structure and glucose availability

2020 ◽  
Vol 239 ◽  
pp. 126527
Author(s):  
Chenhui Wang ◽  
Hailing Zhang ◽  
Jianli Wang ◽  
Shanshan Chen ◽  
Zhen Wang ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Acid Biosynthesis ◽  
Colanic Acid ◽  
Glucose Availability

scholarly journals Escherichia coli dnaJ deletion mutation results in loss of stability of a positive regulator, CRP.

1992 ◽  
Vol 267 (19) ◽  
pp. 13180-13184
Author(s):  
R Ohki ◽  
T Kawamata ◽  
Y Katoh ◽  
F Hosoda ◽  
M Ohki
Keyword(s):  
Escherichia Coli ◽  
Deletion Mutation ◽  
Loss Of Stability ◽  
Positive Regulator
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