TABLE 1.

Sequence alignment of cyclotides observed in P. x hybrida extracts

Peptide	Amino acid sequencea,b	Expt.c m/z	Expt.c mass	Theor.c mass	Errorc	Theor.d mass
			Da	Da	ppm	Da
Phyb A	-GIGCGESCVWIPCVS-AAIGCSCSNKIC-YRN	3434.47	3434.47	3434.55	−23.29	3068.29
Phyb K	-STDCGEPCVYIPCTITALLGCSCLNKVC-VRP	1200.89	3599.67	3599.71	−11.11	3251.46
Phyb M	pQSISCAESCVWIPCAT-SLIGCSCVNSRCIYSK	1246.17	3735.51	3735.73	−58.89	3387.47

^a Ile and Leu in Phyb M were assigned on the basis of homology to Phyb L.

^b Phyb K and Phyb M are acyclic.

^c Expt., experimental; Theor., theoretical; linearized peptide masses after reduction and carbamidomethylation of cysteines.

^d Theor., theoretical; native peptide masses.