Fig. 2. Amino acid sequences of Bb1C and Bb2C. (A) Alignment of the entire amino acid sequences of Bb1C (Bb1) and Bb2C (Bb2). The putative signal sequences and transmembrane segments are underlined. The boundaries of the domains are also indicated. Cysteine residues conserved between Bb1C and Bb2C are indicated by the character `+' while those present in either Bb1C or Bb2C are indicated by the character `0'. (B) Alignment of the amino acid sequences of the CPs of Bb1C, Bb2C, mouse E-cadherin (mE), ascidian Ci-cadherin, oyster Secadhrin, sea star Ap-cadherin, acorn worm Pf1-cadherin and Drosophila DN-cadherin. The abbreviations for these cadherins are shown in the legend of Fig. 3. Residues that are identical with those of Bb1C or Bb2C are highlighted. Numbers in parentheses represent the numbers of amino acid residues that were omitted at the indicated site. The p120- and ß-catenin-binding sites are indicated. The position of the primers used for PCR amplification, DQ1 and KL2, is also indicated.