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J Bacteriol. 1975 January; 121(1): 65-69

Transport of D- and L-tryptophan in Bacillus megaterium by an inducible permease.

R R Bouknight and H L Sadoff

ABSTRACT

Tryptophan-grown cells of Bacillus megaterium ATCC 19213 contain a permease system that transports both D- and L-tryptophan and is inhibited by sodium azide. Arginine-grown cells contain little tryptophan permease activity, suggesting that the system is inducible. Arginine represses the tryptophan permease as well as the transport system for leucine and phenylalanine. Kynurenine was a more effective inducer of the tryptophan transport system than either D- or L-tryptophan.

J Bacteriol. 1975 January; 121(1): 65-69






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