Table 1.

Primary structures of avian and mammalian GnlHs [LPXRFamide (X = L or Q) peptides].

	Animal	Name	Sequence	Reference
Birds	Quail	GnIH	SIKPSAYLPLRFa	Tsutsui et al. (2000)
		GnIH-RP-1*	SLNFEEMKDWGSKNFMKVNTPTVNKVPNSVANLPLRFa	Satake et al. (2001)
		GnIH-RP-2	SSIQSLLNLPQRFa	Satake et al. (2001)
	Chicken	GnIH*	SIRPSAYLPLRFa	Ikemoto et al. (2005)
		GnIH-RP-1*	SLNFEEMKDWGSKNFLKVNTPTVNKVPNSVANLPLRFa	Ikemoto et al. (2005)
		GnIH-RP-2*	SSIQSLLNLPQRFa	Ikemoto et al. (2005) <
	Sparrow	GnIH*	SIKPFSNLPLRFa	Osugi et al. (2004)
		GnIH-RP-1*	SLNFEEMEDWGSKDIIKMNPFTASKMPNSVANLPLRFa	Osugi et al. (2004)
		GnIH-RP-2*	SPLVKGSSQSLLNLPQRFa	Osugi et al. (2004)
	Starling	GnIH	SIKPFANLPLRFa	Ubuka et al. (2008)
		GnIH-RP-1*	SLNFDEMEDWGSKDIIKMNPFTVSKMPNSVANLPLRFa	Ubuka et al. (2008)
		GnIH-RP-2*	GSSQSLLNLPQRFa	Ubuka et al. (2008)
	Zebra finch	GnIH	SIKPFSNLPLRFa	Tobari et al. (2010)
		GnIH-RP-1*	SLNFEEMEDWRSKDIIKMNPFAASKMPNSVANLPLRFa	Tobari et al. (2010)
		GnIH-RP-2*	SPLVKGSSQSLLNLPQRFa	Tobari et al. (2010)
Mammals	Human	RFRP-1	MPHSFANLPLRFa	Ubuka et al. (2009)
		RFRP-3	VPNLPQRFa	Ubuka et al. (2009)
	Macaque	RFRP-1*	MPHSVTNLPLRFa	Ubuka et al. (2009)
		RFRP-3	SGRNMEVSLVRQVLNLPQRFa	Ubuka et al. (2009)
	Bovine	RFRP-1	SLTFEEVKDWAPKIKMNKPVVNKMPPSAANLPLRFa	Fukusumi et al. (2001)
		RFRP-3	AMAHLPLRLGKNREDSLSRWVPNLPQRFa	Yoshida et al. (2003)
	Ovine	RFRP-1*	SLTFEEVKDWGPKIKMNTPAVNKMPPSAANLPLRFa	Clarke et al. (2008)
		RFRP-3*	VPNLPQRFa	Clarke et al. (2008)
	Rat	RFRP-1*	SVTFQELKDWGAKKDIKMSPAPANKVPHSAANLPLRFa	Ukena et al. (2002)
		RFRP-3	ANMEAGTMSHFPSLPQRFa	Ukena et al. (2002)
	Hamster (Siberian)	RFRP-1	SPAPANKVPHSAANLPLRFa	Ubuka et al. (2012)
		RFRP-3	TLSRVPSLPQRFa	Ubuka et al. (2012)
	Hamster (Syrian)	RFRP-1*	SPAPANKVPHSAANLPLRFa	Kriegsfeld et al., (2006)
		RFRP-3*	ILSRVPSLPQRFa	Kriegsfeld et al., (2006)

^*Putative peptides. The C-terminal LPXRFamide (X = L or Q) motifs are shown in bold.