Abstract
The gene SAP (Serine-, Alanine-, and Proline-rich protein) encodes polypeptidescontaining a high percentage of serine, alanine and proline residues. With the availability ofthe sequences of T. cruzi Genome Projects, we demonstrated that the SAP proteins areencoded by a multigenic family whose members share a conserved central domain and can begrouped into four subfamilies. Some SAP member…