FIG. 1.

Structures of Pvs25 and Pvs28. Each protein has a signal sequence, four EGF-like domains, and a sequence moiety for the putative attachment of a GPI anchor, as well as 22 (Pvs25) or 20 (Pvs28) conserved cysteines. Numbers indicate the sequence positions of amino acids. In Pvs28, bold letters indicate amino acids that differ from the reported sequence, and the boxed asparagine in the third EGF domain indicates a putative N-linked glycosylation site. GSGG(E/D) repeats in Pvs28 are underlined. Identical (-) and absent (•) amino acids are also shown.