TABLE 2.

Amino acid sequences of EIAV peptides and the A. marginale peptide (Ana-P16a) used in this study

Peptidea	Response (reference)	Amino acid sequenceb
Gag 221-245	Th1 (13)	QGPIPMTARFIRGLGVPRERQMEPA
Gag 250-269	Th1 (13)	RQTYRQWIIEAMSEGIKVMI
Pol 326-347	Th1 (13)	LPQGFVLSPYIYQKTLQEILQP
Pol 704-719c	Th (12)	EIVYFAWVPGHKGIYG
Gag 13-32	Th (12) and CTL (33)	KLEKVTVQGSQKLTTGNCNW
Env 195-206PVd	CTL (33)	RVEDVMNTTEYW
Pol 704-Env 195PV	Th (12) and CTL (33)	EIVYFAWVPGHKGIYGPGPGRVEDVMNTTEYW
Ana-P16a	Unknown	LYLDTGIASFNFAYFGGELGVRFA

^aAmino acid numbers for EIAV peptides are published elsewhere (53).

^bMinimal ELA-A1-restricted CTL epitope sequences are underlined. The artificial linker amino acid residues in the hybrid peptide Pol 704-Env 195_PV are in boldface and italic.

^cThe corresponding peptide in EIAV_WSUS has a C at position 718; however, this peptide is recognized by horses infected with various strains including EIAV_PV, EIAV_WSUS, EIAV_WY (12).

^dThe corresponding peptide in EIAV_WSUS is RVEDVTNTAEYW (33). However, the two peptide versions are cross-recognized by CTLs from ELA-A1 horses infected with either EIAV_WSUS or EIAV_PV (45).