Placental protein 13 (PP13) was cloned from human term placenta. As sequence analyses, alignments and computa-tional modelling showed its conserved structural and func-tional homologyto members of the galectin family, the protein was designated galectin-13. Similar to human eosi-nophil Charcot–Leyden crystal protein/galectin-10 but not other galectins, its weak lysophospholipase activity was confirmed by 31 P-NMR. In this study, recombinant PP13/ galectin-13 was expressed and specific monoclonal antibody to PP13 was developed. .
