Abstract
When transport of polyamines in Escherichia coli was examined, putrescine excretion was observed under two different physiological conditions: (i) strictly correlated to growth and (ii) following a hyperosmotic shock. Spermidine was not excreted. Characterization of a deletion mutant showed that PotE is not involved in these transport processes.
MeSH terms
-
Antiporters / genetics
-
Antiporters / metabolism*
-
Bacterial Proteins / genetics
-
Bacterial Proteins / metabolism*
-
Escherichia coli / metabolism*
-
Escherichia coli Proteins*
-
Gene Deletion
-
Osmotic Pressure
-
Polyamines / metabolism*
-
Putrescine / metabolism
Substances
-
Antiporters
-
Bacterial Proteins
-
Escherichia coli Proteins
-
Polyamines
-
PotE protein, E coli
-
Putrescine