Article
Competitive accumulation of betaines by Escherichia coli K-12 and derivative strains lacking betaine porters.
Biochimica et biophysica acta - 17 Aug 1995
Randall K, Lever M, Peddie B A, Chambers S T
Abstract excerpt
Escherichia coli was grown in hyperosmotic media containing both glycine betaine and one other betaine. E. coli K-12 derivative WG439 (putP- proP- proU-) did not accumulate any of 15 betaines. Strains WG445 (putP- proP- proU+), WG443 (putP- proP+ proU-) and the control strains all accumulated less betaine, (CH3)3N(+)-(CH2)n-COO-, when n was greater than 1. Accumulation was not detectable when n = 5. Both L- and...
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