Table 1.

Percentage identities between E. coli Tat proteins and those from other eubacteria analysed in this study.

Protein	Length (amino acids)	Percentage identity to E. coli homologue
E. coli TatA	89
P. syringae TatA	91	60% over 48 residue overlap
S. coelicolor TatA	95	36% over 40 residue overlap
A. aeolicus TatA1	59	41% over 46 residue overlap
A. aeolicus TatA2	77	38% over 55 residue overlap
E. coli TatB	171
P. syringae TatB	153	40% over 71 residue overlap
S. coelicolor TatB	161	33% over 55 residue overlap
A. aeolicus TatB	117	23% over 102 residue overlap
E. coli TatC	258
P. syringae TatC	266	62% over 245 residue overlap
S. coelicolor TatC	301	27% over 247 residue overlap
A. aeolicus TatC	240	41% over 234 residue overlap