Fig. 2

Nucleotide and deduced amino-acid sequences of cDNAs encoding Sp-CTx-α a and β-subunit b. Single-letter amino-acid notation is used. Underlined sequences refer to primers; boxed sequences were identical to peptide sequences isolated from tryptic digestion of purified Sp-CTx toxin [11]. Stop codons in frame are indicated by asterisks. The B30.2/SPRY domain is boxed. The nucleotide sequences for α- and β-subunits from S. plumieri have been deposited in the DDBJ/EMBL/GenBank nucleotide sequence databases under accession numbers 2,052,576 MG053103 and MG53104, respectively