Table 1.

Signal sequence analysis of type 1 fimbrial cluster genes

Feature	Gene
	fimA	fimI	fimC	fimD	fimF	fimG	fimH
Function	Rod subunit	Unknown	Chaperone	Usher	Tip subunit	Tip subunit	Adhesin
No. of sequences analyzed	365	179	215	20	87	102	365
SP length, aa	23	19	36	37	22	23	21
#NS/#S	6/12	2/4	6/3	3/6	2/4	6/0	6/0

#NS/#S, number of nonsynonymous to synonymous signal sequence mutations.