Table 2.

Mutations of wild-type flagellin (SJW 1103), applied either singly or as a pair: Δn − 2 is the change in value of n, relative to the wild type (n = 2)

Strain	Mutation	Helical form	n	Δn − 2
SJW 1655	A449V	Straight R	11	9
SJW 1660	G426A	Straight L	0	− 2
SJW 1660-D 503	A449V + G426A	Curly	5	3
SJW 2871	A449T	Curly	5 or 6	3 or 4

Data in rows 1, 2 and 4 are from Ref. 15, and those in row 3 are from Ref. 19.