Figure 3.

Small new putative mussel foot proteins, Mcfp-7, -8, -9, -13, -14, from the phenol gland. Full-length primary sequences are shown, predicted signal peptides for each protein are underlined orange, and the cleavage site is marked with a vertical line. Key amino acids of the post-signal cleavage portions are highlighted: arginine and lysine (dark blue), tyrosine (magenta), glycine (yellow), histidine (green), and aspartate and glutamate (red). Mcfp-7 has a central serine and histidine-rich domain flanked by domains rich in KYG triplets (underlined in black). There are two variants of Mcfp-7, with the first being an approximate shorter version of the latter. Mcfp-9 also has two variants, which only differ by two short insertion/deletion segments.