Fig. 1

a Full-length nucleotide sequences and the corresponding amino acids of KTX-Sp4. The signal peptide is underlined, while the potential polyadenylation signal AATAAA is underlined twice. Red colors indicate the cysteine residues, 5′ and 3′ UTR regions are in lowercase letters. The numbers to the right mean the order of amino acids. b Sequence alignments of peptide KTX-Sp4 with the nearest neighbors