Molecular Weight: 3562.76 Salt Form: TFA Purity: >95% Sequence (3-letter): Glp-Pro-Leu-Pro-Asp-Cys-Cys-Arg-Gln-Lys-Thr-Cys-Ser-Cys-Arg-Leu-Tyr-Glu-Leu-Leu-His-Gly-Ala-Gly-Asn-His-Ala-Ala-Gly-Ile-Leu-Thr-Leu-NH2 [Cys6-Cys12, Cys7-Cys14] Sequence (1-letter): (Glp)PLPDCCRQKTCSCRLYELLHGAGNHAAGILTL-NH2 Storage: -20 ?C or below Orexin A, aka hypocretin 1, is a neuropeptide that regulates wakefulness. Orexin A binds to the two G-protein coupled orexin receptors, OX1 and OX2, with almost equal affinity.