Table 2. Modification of the peptides obtained by enzymatic digestion of LaIT1.

No.	Peptide sequencea	Conversion (%)b	N-Terminus : Lys : Bothb
1	DFPLSK	88	100 : 13 : 35
2	EYETCVRPRK	84	100 : 14 : 57
3	CQPPLK	93	100 : 0 : 20
4	AQICVDPK	78	100 : 0 : 10

^aThe side chain of Cys residues is carboxymethylated. ^bDetermined based on the peak areas in the TIC chromatograms of LC/MS analysis.