Figure 4.

Organization of attractin cDNA and peptide domains. (A) Attractin cDNA: the uppercase bases at the origin represent bases satisfying the Kozak consensus. The asterisks indicate in-frame stop codons. (B) Comparison of attractin protein domains and motifs with C. elegans F33C8.1 protein, the horizontal bars depict the position of cysteines shared by both sequences. (C) Comparison of the putative catalytic serine motif of attractin with the catalytic serine motifs of other serine proteases. The shaded box indicates agreement with the consensus, the # or exclusion from the shaded boxes indicates conflict, and the X indicates satisfaction by any amino acid. The parentheses enclose amino acids any of which would satisfy the consensus.