Table 1.

Apelin isoform amino acid sequences

Identity	Amino acid sequence*
Apelin-77 (Preproapelin)	MNLRLCVQALLLLWLSLTAVCGGSLMPLPDGNGLEDGNVRHLVQPRGSRNGPGPWQGGRRKFRRQRPRLSHKGPMPF
Apelin-55 (Proapelin)	GSLMPLPDGNGLEDGNVRHLVQPRGSRNGPGPWQGGRRKFRRQRPRLSHKGPMPF
Apelin-36	LVQPRGSRNGPGPWQGGRRKFRRQRPRLSHKGPMPF
Apelin-17	KFRRQRPRLSHKGPMPF
Apelin-13	QRPRLSHKGPMPF
Pyr-apelin-13	<ERPRLSHKGPMPF

*Underlined residues in preproapelin represent the signal peptide; < E represents the N-terminal pyroglutamate that is spontaneously formed from glutamine