Table 2.

Structure-based alignment of surface-exposed loop regions of WD repeat peptides

WD	Loop 1	Loop 2	Loop 3
1	GHNGWV	TTPQFP-DM	SRDKT
2	GHSHFV	ISS-DG-QF	SWDGT
3	GHTKDV	FSS-DN-RQ	SRDKT
4	SHSEWV	FSPNSSNPI	GWDKL
5	GHTGYL	VSP-DG-SL	GKDGQ
6	DGGDII	FSP-NR-YW	T-GPS
7	AEPPQC	WSA-DG-QT	YTDNL

Sequences that differ in WD repeats 4 and 6 compared with the other repeats are bolded and underlined.