Table 2.

Intra- and inter-subfamily sequence identities

	Arfs/Arl1(28 proteins)	Arl2/Arl3(8 proteins)	Arl4/Arl7(3 proteins)	Arl5(5 proteins)	Arl6(3 proteins)	ARP(5 proteins)	Sar(9 proteins)	Arl8(7 proteins)
Arfs/Arl1	65 41–99	39 22–46	38 31–45	46 36–53	34 27–41	27 23–32	27 23–33	29 21–35
Arl2/Arl3		47 30–76	31 23–36	36 23–41	30 22–40	29 21–34	27 20–31	28 22–32
Arl4/Arl7			61 57–68	34 31–37	28 23–32	27 22–32	24 23–28	24 21–26
Arl5				59 49–80	32 26–37	29 28–32	26 22–29	25 23–29
Arl6					42 35–50	25 19–28	25 21–28	25 22–28
ARP						40 30–63	24 19–27	24 21–30
Sar							67 55–95	28 23–33
Arl8								72 59–96

Pairwise sequence identities were calculated with program Mscore (A. Soyer and I. Callebaut, LMCP, CNRS Paris) for all proteins listed in Supplementary table 3, except for sequences that may have errors or be incomplete. Average (bold) and minimal–maximal (italic) values for intra- and inter-subfamily pairings are listed as percentages.