Escherichia coli	B	37343, 37344, 37345	
Escherichia coli	B1t-7A	665767	
Escherichia coli	gene tnaA	726660, 728262, 728650	
Escherichia coli	gene tnaA on plasmid pMD6	727478	
Escherichia coli	prototypical EPEC 2348/69 serotype O127:H6	715385	
Escherichia coli	strains MG1655, MG1406, and MG1655H	701449	
Escherichia coli	structural gene mutant and two regulatory mutants	37361	
Escherichia coli	tryptophanase with strong cysteine beta-lyase activity	677276	
Escherichia coli B / ATCC 11303	B	37343, 37344, 37345	
Escherichia coli B/1t7-A	-	37335, 37337, 37339, 37340, 37348, 37359, 37360