TABLE 1.

Sizes of predicted EFV gene products and LTR compared to those of primate and nonprimate FVs^a

Virus (GenBank accession no.)	Size
	LTR (bp)	Gag (aa)	Pol (aa)	Env (aa)	Tas (aa)	ORF2 (aa)
EFV	1,449	559	1,154	987	249	329
BFV (U94514)	1,305	544	1,220	990	249	335
FeFV (Y08851)	1,355	574	1,156	982	209	313
SFV1 (X54482)	1,623	647	1,158	985	308	403
SFVcpz (U04327)	1,769	653	1,146	988	300	364
HFV13 (U21247)	1,123	648	1,143	989	300	356

^aNote that the HFV13 LTR has been shown to derive from the SFVcpz LTR by a specific deletion in the U3 region (2, 22).