Sequence analyses of LBD peptides of different FcALFs. (A) Showed multiple alignments of LBD sequences from seven ALFs in F. chinensis; (B) Showed multiple alignments of these LBD sequences base on the acid-base properties of amino acid residues. “1”, “2”, “3” and “4” represented hydrophobic, neutral, basic and acidic amino acid residues, respectively. CS represented consensus sequence. Identical sites were marked by black background and shown with stars below. Sites with a similarity more than 50% were highlighted with gray background. Arrows showed identical sites that only existed in anti-WSSV peptides.