Percent identity of sequences
The percent of sequence identity (PID) (Supplementary, PID and SD) was calculated according to equation (1):
\(\text{PID}=\ \frac{N_{\text{eq}}\bullet 100}{N_{1}+N_{2}-N_{\text{eq}}},\ \%\) (1)
where Neq is the number of identical aligned non-gapped characters; N1 andN2 are the length of aligned sequences30. Note that equation 1 is applied to full-sized sequences. In this study, the number of amino acid residues (hereinafter referred to as the length of the sequences) ranged from 450 to 650 aa residues.