Figure 1.

Sequence comparison of the WSC protein family. (A) Identical amino acids in at least two of the proteins are highlighted in white with a dark background. Gaps were used to maximize the alignment generated with the GCG software package. Different domains in the proteins are labeled. The conserved cysteine residues in the cysteine motif are designated by a solid circle, and the aromatic amino acids are designated by the symbol Φ. The last amino acids of this motif VY are designated by inverted solid triangles. Conserved sequences in the C terminus, KXYQ and DXXD, are boxed. (B) Schematic diagrams of the WSC family. SP, signal peptide; Cys, cysteine motif; Ser/Thr, serine and threonine-rich domain; Tm, transmembrane domain.