Table 2. Physical and chemical parameters of three serine protease isoforms and chorionic proteinase inhibitor in Amphibalanus amphitrite.

	Serine Protease I	Serine protease II	Serine protease III	chorionic proteinase inhibitor
Contig	CL563.Contig1	CL1641.Contig1	CL200.Contig3	CL5577.Contig1
Present fractions	10% SDS	10% SDS	1% SDS	acetic acid
Sequence length (AA)	659	890	300	274
MW (kDa)	66.0	91.5	33.2	29.6
pI	4.88	5.74	5.44	7.29
Instability index	30.38 (stable)	34.28 (stable)	44.00 (unstable)	40.25 (unstable)
Signal peptide	yes	no	no	yes