The transcriptional programme of Salmonella enterica serovar Typhimurium reveals a key role for tryptophan metabolism in biofilms

Table 1 Expression levels of S. Typhimurium tryptophan biosynthetic genes during biofilm growth under flowing conditions.

Gene name	Description	Identifier	Fold-induction	P-value^a
trpD	Anthranilate synthase, component II	STM1724	5	3E-03
trpC	Tryptophan biosynthesis protein TRPCF, bifunctional	STM1725	11	4E-04
trpB	Tryptophan synthase beta protein	STM1726	8	6E-05
trpA	Tryptophan synthase alpha chain	STM1727	7	7E-05
trpS2	Putative tryptophanyl-tRNA synthetase	STM4508	2	6E-04
trpR	Transcriptional regulator for tryptophan operon and aroH	STM4583	3	3E-04

a. Genes which passed the statistical filtering (P < 0.01). Expression values are expressed as fold-induction comparing expression in biofilm cells to planktonic cells.

ISSN: 1471-2164